8-76 Section 812. Temporary Traffic Control
for Construction Zone Operations 812.01. Description This work consists of protecting, regulating, warning, guiding, and maintaining traffic through and around the Construction Influence Area (CIA) . This work also includes furnishing, placing, relocating, operating, maintaining, and removing traffic control devices. The Department will provide, install, and maintain traffic control devices outside the CIA. 812.02. Materials Provide material in accordance with the following sections : Temporary Traffic Signs ........................................................................ 922 Channelizing Devices ........................................................................... 922 Temporary Pavement Markings ............................................................ 922 Lighting Devices .................................................................................... 922 Temporary Traffic Signals ...................................................................... 922 Traffic Regulator Equipment .................................................................. 922 Portable Changeable Message Sign ..................................................... 922 Temporary Concrete Barrier .................................................................. 922 Temporary Attenuation .......................................................................... 922 Conspicuity Tape ................................................................................... 922 812.03. Construction
A.Contractor Notification . Provide the traffic control certification letter to the Engineer . Notify the Engineer at least 72 hours, or as otherwise required by the contract, before starting work or installing init ial traffic control devices on the project.
B.Changes in Stage Construction Plans . Provide written notice to the Engineer before making changes in stage construction. If the Department accepts the changes, the Engineer will provide written approval to the Contractor.
C.Deficient Traffic Control Operations
1.Traffic Control Quality and Compliance . The following applies to all aspects of the traffic control plan and traffic control devices.
a.Traffic Control N ot Anticipated in Design . If at any time during the projec t, including during the seasonal suspension, the Engineer documents that the traffic control requires improvements MDOT Standard Specifications for Construction Section 812
8-77 beyond the scope of the t raffic control plan, the Engineer will
provide written instructions to the Contractor , the Contractor’s appointed Safety Supervisor, and traffic control supplier on the improvements that are required. The Contractor must develop and submit to the Engineer for approval a written implementation schedule for improvements . If the schedule is not approved, or if the schedule is approved but is not followed, the Department will adjust the contract according to subsection 812.03.C.1.c.iii . If the implementation schedule is not followed, the Engineer will notify the Contractor , the Contractor’s appointed Safety Supervisor, and traffic control supplier in writing that they are in violation of this subsection. The work of making traffic control improvements directed by the Engineer that are beyond the scope of the t raffic control plan will be paid for as extra work.
b.As Designed Traffic Control . If at any time during the project, including during the seasonal suspension, the Engineer documents that the traffic control is deficient, inadequate, or improperly placed, the Engineer will provide written notification with instr uctions for corrective action to the Contractor , the Contractor’s appointed Safety Supervisor, and traffic control supplier . Acknowledgement of the Engineer’s notification must be provided within 1 hour by the Contractor . The Contractor will have 4 hours f rom the Engineer’s notification to address the issue or provide a written implementation schedule for the Engineer’s approval . If the schedule is not approved, or if the schedule is approved but is not followed, the Department will adjust the contract acco rding to subsection 812.03.C.1.c.iii . The Contractor is required to supply evidence that the corrective action has been taken if practical visual evidence should be provided. At this time , the adjustments in subsection 812.03.C.1.c.iii will be paused until the Engineer provides written approval of satisfactory corrective action or notif ies the Contractor, the Contractor’s appointed Safety Supervisor, and the traffic control supplier that the corrective action is not satisfactory ; at this time , the adjustments will continue per subsection 812.03.C.1c.iii . The Engineer should provide details on the remaining items that are not satisfactorily addressed. If the implementation schedule is not followed, the Engineer will notify the Contractor , the Contractor’s appointed Safety Supervisor, and traffic control supplier in writing that they are in violation of this subsection.
c.Corrective Action . The Engineer will give written notification to the Contractor , the Contractor’s appointed S afety Supervisor, and traffic con trol supplier as identified above. Failure to make MDOT Standard Specifications for Construction Section 812
8-78 corrections within the required time frame may result in the
following actions by the Engineer: Stop work on the project until the Contractor completes corrective action . Order corrective action by others in accordance with subsections 107.07, 108.02, 812.03.B , and in the interest of public safety . A contract price adjustment in the amount of $100 per hour for every hour or portion thereof the improvements or corrective action remains incomplete as described herein. If improvements or corrections have not been made to the satisfaction of the Department, the contract will be adjusted until the traffic control is acceptable.
D.Placing Traffic Control Devices. Provide and maintain traffic control devices meeting the requirements in the current version of the ATSSA Quality Guidelines for Temporary Traffic Control Devices and Features . Apply and place traffic control devices within the CIA in accordance with the M MUTCD, as shown on the plans, or as directed in writing by the Engineer. Do not place commercial or Contractor identification signs within the highway right -of-way. Display only traffic control devices relevant to conditions . Cover, remove, store, modify, or move existing temporary or permanent signs with inapplicable legends . Do not place temporary signs not in use with the sign face parallel to traffic. Inspect traffic control devices daily to ensure that the devices are relevant, in place, positioned, al igned, and oriented as required. Record inspections and make the records available to the Engineer upon request . The Department may take possession of the inspection records at project completion. Maintain lights on traffic control devices in working order at all times . Remove temporary traffic control devices from the project if no longer required. Temporary traffic control devices provided by the Contractor will remain the property of the Contractor.
1.Temporary Sig ns. Signs must not be fabricated with vertical seams . Horizontal seams are not to cross through the sign legend. Mount signs of 20 square feet or less on portable or ground-driven sign MDOT Standard Specifications for Construction Section 812
8-79 supports . Mount larger signs on ground-driven supports . Place
ground-driven sign systems as described in MDOT Standard Plan WZD -100 series or use another NCHRP Report 350 or AASHTO Manual for Assessing Safety Hardware (MASH) accepted design. Mount signs at a bottom height of at least 5 feet above the near edge of pav ement and at least 5 feet above ground. If placing a sign behind a retaining wall, provide a bottom height of at least 5 feet above the top of the wall and provide a minimum height above the ground behind the wall to ensure visibility. If erecting signs behind a curb, or within 6 feet of a pedestrian walkway, mount signs at a bottom height of at least 7 feet above ground. If the sign is located in a closed section of a walkway , the bottom height must be at least 5 feet. For ground-driven signs, if a secondary sign is required, mount the secondary sign below the primary sign with a bottom height 1 foot less than the bottom height required. For portable signs requiring a secondary sign, mount on separate supports at the required bottom height . Mount the primary portable sign above the secondary sign on separate supports . The Engineer will allow portable sign clusters if the total area measures no greater than 20 square feet. Erect signs with supports vertical and the legend or symbol horizontal . Signs must be plumb with a tolerance of no more than 2 inches over 4 feet. The Department will allow the use of flexible, roll -up signs only during daylight hours . The Department will not allow the use of mesh signs. For shoulders with no barrier walls, if removing temporary signs on portable supports, remove the sign stands from the uprights . Lay the sign flat, off the shoulder, and place the uprights facing downstream from traffic. Remove support stands and ballasts from the shoulder . Do not place sign cov ers on temporary sign systems on portable supports located on shoulders with no barrier walls. For shoulders with barrier walls, if removing temporary signs on portable supports, remove the sign stands from the uprights, and place against the barrier wall. Place the uprights facing downstream from traffic and place support stands and ballasts close to the barrier wall. Cover temporary signs on portable supports that straddle barrier wall that are required to remain on the project while not in use. Remove MDOT Standard Specifications for Construction Section 812
8-80 sign covers from the roadway or store against the barrier wall when
not in use. For locations with guardrail, if conditions require temporary removal of temporary signs on portable supports, remove the sign stands from the uprights . Lay the sign behind the guardrail, with the uprights pointing downstream from the traffic, and place the support stands and ballasts close to the guardrail . Do not store signs against cable barrier . Do not obstruct or interfere with attenuation devices when storing temporarily re moved temporary signs on portable supports.
a.Type B, Temporary, Prismatic, Special . Signs must meet the requirements for Sign, Type B, Temp, Prismatic, Furn and Oper as outlined in sec tion 812. Ensure that Type B, Temporary, Prismatic, Special signs are not fabricat ed with vertical seams. Horizontal seams are not to cross through the sign legend. Install Type B, Temporary, Prismatic, Special signs on driven sign supports, in accordance with subsections 812.03 and 919.04 and section 912, unless otherwise i ndicated on the plans or proposal or approved by the Engineer .
b.Concrete Barrier -Mounted Temporary Sign System . Provide a sign system capable of being properly attached, as determined by the Engineer, to concrete barrier, temporary or permanent, with top width as narrow as 5 inches or as wide as 15 inches. Ensure that the sign system has the capacity to display a roll -up or rigid sign up to 48 inches wide by 60 inches high. Ensure that the sign system and design meet all of the applicable requirements in subsections 812.03.D and 922.02. Construct the sign system from materials that will not be susceptible to corrosion or deterioration due to the effects of weather or road de-icing agents throughout the duration of installation. Sign system must securely mount to the barrier section in a manner that displays the sign clearly above the barrier . Anchoring mechanisms must operate such that when engaged, they do not irreparably damage the barr ier section. Deploy the concrete barrier -mounted sign system in accordance with the manufacturer’s recommendations and the following requirements: MDOT Standard Specifications for Construction Section 812 8-81 Install the sign system at locations shown on the plans or as directed by the Engineer such that the message displayed is easily visible to motorists and not obscured by or in conflict with other signage. Make adjustments to the position of the sign system as directed by the Engineer. Ensure that any deformation or damage to a Department -owned concrete barrier section that occurred due to installation or use of this sign system is repaired as directed by the Engineer at the time of removal.
2.Sign Covers . For permanent signs, other than overhead signs and signs larger than 60 square feet, cover the entire front of t he sign panel . Mount the sign coverings using Department -approved methods to avoid damaging the sign sheeting. Do not apply fastening devices or covers directly to the reflective sheeting. Use spacers that provide 2 inches of air space between the cover an d the sign face to protect the sheeting from damage. Install Type I sign covers on Type I signs shown in the contract to obscure conflicting information. Submit shop drawings of the Type I sign covers to the Engineer and obtain the Engineer’s approval before covering Type I signs on the project. For temporary signs on fixed supports, cover the entire sign legend. Do not use burlap or similar material to cover Department or l ocal government owned signs . The Contractor may use approved soft covers on other temporary signs. Do not use sign plaque overlays that alter part of the legend or symbol.
3.Sign Supports . Place and construct sign supports to resist swaying, turning, and displacement . Provide fixed sign posts in accordance with subsection 919.04, ex cept that painted or galvanized steel posts are allowed . Mount construction signs on portable sign support standards only if signs are to remain in place for 14 days or less or as allowed by the Engineer if fixed supports are not possible.
a.Reflective panel for temporary sign supports . When used, match the sheeting of the reflective panel to the material type and background color of the sheeting of the sign mounted on the post, except for YIELD and DO NOT ENTER signs where the reflective strip will be red. The reflective strip must be at least 2 inches wid e by 3 feet long. MDOT Standard Specifications for Construction Section 812
8-82 Attach the reflective strip to PVC or 0.080- inch-thick aluminum
substrate. If aluminum is used on a u-channel post , a backing plate is required. Attach the sheeting to the post as recommended by the manufacturer and approved by the Engineer . Install the sheeting as soon as the support post is placed in the ground or the sign is placed over median concrete barrier .
4.Supplemental Weights . Maintain traffic control devices upright and aligned during use. Use sandbags or a Department -approved alternate as supplemental weights to achieve stability.
5.Channelizing Devices. Install the lead-in signing and lighted arrow before installing channelizing devices . Install channelizing devices in the direction of traffic flow . Remove channelizing devices in the opposite direction of traffic flow . The reflective sheeting for all channelizing devices within the project limits must be the same ASTM type for the life of t he project . Do not mix drums and cones within a traffic channeling sequence. Where lane closures are already in place, use the same type of channelizing devices to extend the closures. The use of traffic cones is allowed only in the daytime. Ensure that cones remain upright and in place and do not interfere with traffic . When using plastic drums, s tand the plastic drums upright and stabilize them with weight to prevent overturning. Do not mount signs on drums.
6.42-inch Channelizing Devices. Provide and install 42-inch tall, retro-reflective plastic channelizing devices as shown on the plans or as directed by the Engineer . Do not attach lights .
a.The Department will allow the daytime use of 42-inch channelizing devices in taper and tangents for the followi ng: Capital Prevent ive Maintenance projects, pavement marking, chip seal, micro -surface, and crack -filling projects; Any projects where the use of plastic drums restricts proposed lane widths to less than 11 feet including shy distance; or Work durations of 12 hours or less. The devices must be placed such that spacing does not exceed the maximum values described in Table 812- 1. MDOT Standard Specifications for Construction Section 812
8-83 Table 812- 1:
Daytime Maximum Spacing for 42 -inch Channelizing Devices Work Zone Speed Limit Taper Tangent < 45 mph 1.0 S 2.0 S ≥ 45 mph 50 feet(a) 100 feet(a)
a.For nighttime operations, p lace the devices a maximum of 25 feet apart in taper sections and a maximum of 50 feet apart in tangent sections . These spacing requirements apply to all speed limits during nighttime operations . S = work zone speed limit (mph)
b.Temporary Tubular Markers . Provide and install t ubular markers as shown on the plans . Bond the devices to the roadway surface in accordance with the manufacturer’s recommendations, using a thermosetting epoxy adhesive or a pad of flexible mastic adhesive. If a flexible mastic adhesive is used, ensure that both sides of the mastic pad are protected with pre-mask tape or release film. Space tubular markers not more than 100 feet apart in tangent areas and not more than 50 feet apart in tapers unless otherwise directed by the Engineer.
7.Temporary Delineators. Provide temporary delineators to delineate work zone shoulders that cannot supp ort the use of plastic drums . Install temporary delineators panels or t emporary flexible delineators in accordance with the manufacturer’s recommendations and as shown on MDOT Standard Plan WZD -126 series .
8.Lighted Arrows . If closing lanes, place a Type C lighted arrow on the shoulder at the beginning of the channelizing device taper . Place a shoulder closure taper in advance of the lighted arrows placed on the shoulders . Provide a minimum bottom height of at least 7 feet for Type C panels . For narrow or non- existent shoulders, place the lighted arrow panel behind the channelizing devices as near the beginning of the taper as physically possible. Place the lighted arrow panel level and visible to oncoming traffic. Ensure that the arrow remains clearly legible at distances from 2,500 feet to 200 feet from all traffic lanes and roadway entrances . Do not place the lighted arrow on a horizontal or vertical curve that may interfere with this legibility requirement . The Engineer will verify the legibility distances on a sunny day and a clear night. MDOT Standard Specifications for Construction Section 812
8-84 If the lighted arrow is in use, secure the tires on the ground with wheel
chocks or elevate the trailer with the bottom of the tires above the ground. If the lighted arrow is not in use, park the device in accordance with subsection 812.03.G.5. The lighted arrow board must not be in travel mode when stored within 30 feet of the traffic lanes. If the contract includes standby Type C lighted arrows as a pay item, make a lighted arrow available for immediate use as a replacement unit. Locate the standby lighted arrow at the project or at a location approved by the Engineer.
9.Type III Barricade. Use Type III barricades to accentuate delineation or warning and for total or partial road closures . For complete road closures , extend the barricades, with no gaps, across the roadway and shoulders or from curb to curb. Light Type III barricades with two Type C or Type D warning lights, fastened to the uprights above the top rail, provided these warning lights each weigh 3.3 pounds or less. Construction signs placed behind barricades must be located on independent supports . Place the bottom of the signs above the top rail of the barricade. Stripes on the retro-reflective sheeting must be placed in accordance with Figure 6F-7 in the 2009 edition of MMUTCD. Place sheeting on both sides of Type III barricades if traffic , including local traffic, approaches the barricade from both directions. Do not place Type III barricades parallel t o approaching traffic. If through-traffic is prohibited, use Type III barricades , including the required construction signs and lights . Arrange barricades and erect signs to allow the passage of local traffic and discourage through traffic . Install a sign with the required legend concerning permissible use by local traffic only.
10.Temporary Concrete Barrier . Place temporary concrete barriers before diverting traffic or beginning work . Provide clean barriers in sound structural condition. If placing temporary concrete barrier sections on the pavement, clean the pavement of any material that would reduce the friction between the barrier section and the underlying pavement . During barrier installation, protect traffic by using or installing standard warning and channelizing devices . After placing end treatment, place barriers in the direction of the flow of traffic . Remove barriers in the direction opposite to traffic flow. Link sections together to fully engage the co nnection between sections . Maintain the barrier with end-attachments engaged and within 2 inches of the alignment shown on the plans. MDOT Standard Specifications for Construction Section 812
8-85 Install Type B high-intensity lights on temporary concrete barriers in
accordance with the MDOT Standard Plan R -126 series. If incomplete concrete barrier installations or removals expose barrier blunt ends to traffic inside the clear zone for more than 8 hours, make these ends crashworthy in accordance with the MDOT Standard Plan R-126 series or as directed by the Engin eer. Install barrier reflector markers on the temporary concrete barrier . Remove dirt and other material that could diminish adhesion from the barrier before installing the reflectors . Install reflectors using the manufacturer’s recommended adhesive and installation procedures . Install the reflector near the center of the barrier section and at a height of 18 inches ±1 inch from the bottom of the barrier section to the top of the reflector . Provide a maximum longitudinal spacing of 20 feet. Ensure that the color of the reflector matches the color of the edgeline pavement marking in that location. If relocating or adjusting temporary concrete barrier , leave the existing reflector markers on concrete barrier intact if they are undamaged and the color is as required. If the reflector color is not as required, replace with the correct color reflector . Clean barrier reflector markers before placing the barrier back in operation. Replace temporary concrete barrier sections structurally damaged during handling or by traffic . Repair non-structural damage that affects the performance of the section using Department -approved concrete or mortar mix if directed by the Engineer. Remove and replace damaged barrier reflector markers. Position replacement markers directly in front of the damaged marker.
a.Glare Screen Temporary . Must be of a design and shape so that during hours of darkness, a driver traveling at the posted speed limit in the inside travel lane cannot view the headlights of other vehicles traveling at the posted speed limit in the opposing inside travel lane. Each completed section of temporary glare screen is to consist of a continuous base fitted with flexible, vertical blades spaced such that the headlight gl are of opposing traffic is obscured. The length of a complete section of Glare Screen, Temp is defined as being equal to the length of the temporary glare screen base with flexible blades attached as fabricated by the temporary glare screen manufacturer . Modification of the temporary glare screen blades, mounting hardware, and/or the temporary glare screen base, including cutting or drilling of additional holes in the base or MDOT Standard Specifications for Construction Section 812
8-86 blades , is not allowed. The overall run of Glare Screen, Temp must
be such that the entire length of temporary or permanent barrier , specified on the plans or proposal, is covered. The distance between the temporary glare screen blades at the point of temporary barrier segment connections or at the temporary glare screen base joints mus t not be greater than the nominal blade to blade distance. Intermixing of different brands or types of temporary glare screen and/or components, within the same run, is not allowed. Install the temporary glare screen in complete sections along the longitud inal centerline of the temporary or permanent barrier , identified on the plans or in the proposal, with no gaps between the bottom of the temporary glare screen base and the top of the barrier . Attach the temporary glare screen using installation procedures and hardware specified by the manufacturer . Install the mounting hardware for the temporary glare screen in clean holes drilled into the top of the temporary or permanent barrier . Tighten all hardware and connections according to the manufacturer’s specifications. Adjust the temporary glare screen when the temporary barrier on which it is installed is adjusted. Relocate the temporary glare screen, as required, to locations identified on the plans or proposal for stage construction. Omit the temporary glare screen for a distance of 10 feet (maximum) approaching the face of a Type B high- intensity light when a Type B high- intensity light, required per the MDOT Standard Plan R -126 series, falls within a run of temporary glare screen . Replace the entire section of temporary glare screen when the number of damaged temporary glare screen blades on a section of temporary glare screen is equal to or greater than one-third the number of blades attached to that individual temporary glare screen base section. Replace damaged temporary glare screen section(s) within 10 calendar days upon written notification by the Engineer. Temporary Glare Screen Base. Provide temporary glare screen bases that are nonwarping, durable, impact resistant, non-metallic, polymeric material . These bases must be able to withstand, at minimum, the same number of impacts as the temporary glare screen blades without deforming, warping, MDOT Standard Specifications for Construction Section 812
8-87 twisting, cracking , or splintering. Provide bases with mounting
holes pre-drilled by the man ufacturer of the temporary glare screen . The bases must be in sound condition and free of checks, cracks, splinters, fins, tears, and warps at the time of initial installation and when the temporary glare screen is being relocated or adjusted. Temporary Glare Screen Blades. Provide blades that are green or gray . Attach each blade to a mounting bracket . Temporary glare screen blades and mounting brackets are to be supplied by the manufacturer of the temporary glare screen. The blade height, measured from the top of the base, must be 24 inches . The blade width must be constant from the top to bottom of the blade. No gaps will be allowed between the bottom of the blade and the top of the base. Attach the mounting bracket, wit h the blade attached, flush to the base at a 22-degree angle + /- 2 degrees, rotated on the vertical axis, with the trailing edge of the blade being downstream from the flow of traffic . Attach the blades to the base according to the manufacturer’s specifications . The blades must be flexible but have sufficient rigidity to remain upright in the wind turbulence generated by traffic traveling at the posted speed. The blades must be able to withstand impacts without deforming, warping, twisting, cracking , or spl intering. The blades must be in sound condition; free of checks, cracks, splinters, fins, tears, and warps ; and securely fastened to the base at the time of initial installation of the temporary glare screen and when the temporary glare screen is relocated or adjusted. The blades must be fade resistant and free of retro-reflective sheeting or reflective surfaces. The blades, after being impacted, must be able to recover to within 15 degrees of their original orientation (vertical and horizontal).
11.Temporary Concrete Barrier Ending . Place the temporary concrete barrier ending in accordance with the MDOT Standard Plan R -126 series and this subsection. Repair or replace damage to temporary concrete barrier endings . Temporary barrier endings subject to approach traffic and not terminated behind guardrail must be attenuated or, if applicable, shielded with a temporary concrete barrier sloped end section.
a.Detail 1. Place the sloped temporary concrete barrier ending section as required for temporary concrete barrier placement. MDOT Standard Specifications for Construction Section 812
8-88 b. Detail 2. Install impact attenuation systems in accordance with the
manufacturer’s specifications . Do not use a sloped end section in combination with a Detail 2 ending. Install sand module attenuator components as shown on MDOT Standard Plan WZD -175 series . Install impact attenuation devices as shown on the plans, as directed by the Engineer, or both. Place attenuation systems on concrete, HMA, or compacted aggregate surface in accordance with the manufacturer’s specifications . If the required base does not exist, construct the base pad, foundation, anchor block, and backup unit in accordance with the manufacturer’s specifications . Install the unit and connect to the backup and the front anchoring system as required. Provide and install an object marker as shown on MDOT Standard Plan WZD -150 series . Do not attach unapproved appurtenances to the attenuator. Ensure that an individual trained by the manufacturer in the installation of impact attenuator systems is present during attenuator installation. The Department will not provide this individual. Install the following in accordance with the manufacturer’s specifications: Attenuator transition assemblies ; Transition panels ; End panels ; and Other miscellaneous accessories required for connecting the attenuator to concrete barriers . Provide written certification to the Engineer verifying attenuator installation as shown on the plans and in accordance with the manufacturer’s specifications. If using temporary anchors in new or existing pavement, remove anchors to at least 1 inch below final pavement grade and backfill with an epoxy material approved by the Engineer . For temporary anchors in temporary pavement, remove temporary anchors flush with the paved surface. MDOT Standard Specifications for Construction Section 812
8-89 If concrete pads contain steel reinforcement, use equipment
capable of drilling or coring through steel reinforcement to obtain the required depth for the concrete anchors. Place cable anchorages and backups to meet the required attenuator alignment. If the Engineer directs the replacement, repair, or realignment of attenuators, respond within 24 hours . If the Contractor fails to respond or fails to complete repair work within 48 hours after notification, the Engineer may assign the work to others at the Contractor’s expense.
c.Detail 3. Ensure that the temporary concrete barrier sections that extend past, and make contact with existing guardrail, are standard, full -height sections . Do not use a sloped end section in combination with a Detail 3 ending.
d.Detail 4. Install Detail 4 endings in accordance with subsection 812.03.D.1 1.b and this subsection. Refer to the MDOT Standard Plan R -126 series, Detail 4, to determine the offset between the toe of the existing concrete barrier wall and the attenuator. Do not use a sloped end section in combination with a Detail 4 ending.
e.Detail 5. Install Detail 5 endings in accordance with subsection 812.03.D.1 1.b and thi s subsection. Do not use a sloped end section in combination with a Detail 5 ending.
12.Temporary Pavement Marking . The requirements for placing temporary pavement markings differ depending on the situation. Place 4-foot dashes spaced 50 feet apart from center -to-center of the markings when temporary pavement markings are placed in the configuration of permanent markings and traffic is driving in the normal lanes . However, place solid markings, not 4-foot dashes, to temporarily mark a solid edgeline. When temporary pavement markings are used to facilitate traffic shifts or when used to delineate traffic in other than the normal lanes, or both, place markings in the same configuration as permanent markings in accordance with section 811. All temporary pavement markings must be placed in accordance with the PAVE -900 Series . Local agencies should follow the PAVE -900 Series unless other local standards are approved by the Engineer. MDOT Standard Specifications for Construction Section 812
8-90 a. Temporary Pavement Marking – Wet Reflective Type R . Use
temporary WR pavement marking Type R (removable tape) when temporary pavement markings must be placed on finished pavements and are not in the exact location as future permanent markings or at the discretion of the Engineer when temporary markings must be removed during the life of a project. Prior to installation, air blow or brush the pavement surface to remove surface dust and dirt . Remove curing compound from new concrete surfaces before applying Type R t ape. Removal of curing compound is paid per section 811.04. Place WR Type R tape when it is used as a 4-foot dash or full-length skip line as defined in the contract to temporarily mark finished pavement prior to the placement of permanent markings in accordance with the manufacturer’s specifications for existing temperature and pavement condition. Offset the dash or skip line 1 foot from the permanent marking so the permanent markings can be placed prior to the removal of the 4-foot dashes or full-length skip lines. Do not use 4-foot dashes or full -length skip lines to temporarily mark a solid edge line. Replace damaged or missing tape of more than two consecutive skip lines . Replace tape that fails due to improper installation within 24 hours after notification by the Engineer . Failure to replace the tape within the 24-hour period may result in a contract price adjustment as described in subsection 812.03. C. Between April 15 and November 1, place WR Type R tape not used as a skip line in accordance with the manufacturer’s specifications for existing temperature and pavement condition. Replace WR Type R tape of more than 50 cumulative feet that fails within 24 hours after notification by the Engineer . Failure to replace the tape within the 24-hour period may result in a contract price adjustment as described in subsection 812.03. C. From November 2 to December 1 and from March 15 to April 14, place WR Type R tape for all temporary shifts and tapers when pavement surfaces are dry and air temperatures are 40°F and rising. Ensur e that all WR Type R tape placed during these times is placed during approved daytime hours negotiated by the Engineer and Contractor or the daytime hours required in the contract . Do not place WR Type R tape within 24 hours of predicted precipitation or 24 hours after any precipitation. The Contractor will be paid to repair locations that fail during these times MDOT Standard Specifications for Construction Section 812
8-91 unless the Engineer determines that the failure is due to
improper surface preparation or failure to follow these requirements . Repairs, if requi red, will be paid for at a negotiated price b y the Engineer and Contractor for the associated work. Use temporary WR pavement marking Type NR paint instead of WR Type R tape for all tapers and shifts when ambient air temperature is less than 40°F . To remove the WR Type NR paint, use the least abrasive technique as directed by the Engineer to minimize scarring . If the approved pavement marking removal pay item is not part of the contract, the cost of the removal of Type NR pavement markings will be negotiated by the Engineer and Contractor. WR Type R tape is not to be placed between December 2 and March 14.
b.Temporary Pavement Marking – Wet Reflective Type NR . Place Type NR tape and Type NR paint in accordance with section 811. Wet Reflective Type NR P aint. Use temporary pavement marking WR Type NR paint when temporary pavement markings must be placed on pavement to be removed or replaced during construction. It also must be used when temporary markings line up exactly with the placement of permanent markings and may be grooved out prior to recessing permanent markings . The temporary pavement marking material must be compatible with the material specified for the permanent markings if permanent markings are to be placed on top of temporary markings. Place the binder at a thickness of 18 mils while driving at a maximum rate of 8 miles per hour . Drop WR optics and glass beads at a rate recommended by the manufacturer for an approved WR system. Ensure that the proposed WR optic is approved by the Engineer. Place WR Type NR paint, used as a 4-foot dash or full -length skip line as defined in the contract, to temporarily mark finished pavement prior to the placement of permanent markings, in the exact location as the permanent marking such that its removal is not necessary . Only use WR Type NR paint markings compatible with the permanent pavement marking material specified on the project as a 4-foot dash or full -length skip line unless the permanent markings are to be recessed, whereas the temporary Type NR paint line will be removed during the MDOT Standard Specifications for Construction Section 812
8-92 recessing process . Do not use 4-foot dashes or full -length skip
lines to temporarily mark a solid edge line. Wet Reflective Type NR Tape . Use temporary pavement marking WR Type NR Tape as a 4-foot dash or full -length skip line as defined in the contract to temporarily mark a white skip line or yellow centerline on base or leveling course pavement . WR Type NR tape must not be used to temporarily mark a solid edge line. WR Type NR tape is not to be used on the wearing course of asphalt or on existing pavement.
c.Temporary Special Pavement Markings (Transverse, Legend, and Symbol) . Use Type R temporary WR special markings if the markings applied during the p roject require removal during the life of the contract . Use Type NR temporary special markings if the markings applied during the p roject can remain in place or are located on pavement to be removed or replaced during construction, or if the manufacturer ’s temperature requirements for temporary tape cannot be met . Install temporary special pavement markings in accordance with the contract and section 811. Wet Reflective Type NR Paint . Provide Type NR temporary special markings as paint reflectorized with glass beads from the Qualified Products List . Use pavement marking T ype NR temporary special markings when temporary pavement markings must be placed between November 2 and April 14 or if the removal of the temporary marking will occur after December 1. Wet Reflective, Type R, Tape . Provide Type R temporary special marking s from the Qualified Products List . Apply and remove tape in accordance with the manufacturer’s instructions . The tape must remain flexible and conform to the texture of the pavement surface during use. All curved arrows, curved legends, and curved symbols must be precut or fabricated prior to being placed in the field. Between April 15 and November 1, place Type R WR tape in accordance with the manufacturer’s specifications for existing temperature and pavement conditions . Utilizing 4 - or 6-inch lines to create a symbol or stop bar is prohibited when th ese items are set up in the project. Exceptions will only be made when the pay items are added to a project in the field and the appropriate materials are not on MDOT Standard Specifications for Construction Section 812
8-93 hand. Otherwise, ensure that the sy mbol is fabricated prior to
being placed in the field and the stop bar is made out of 12-inch material.
d.Temporary Raised Pavement Markings. Select temporary raised pavement markers (TRPM s) from the Qualified Products List and install per the manufacturer’s specifications. Remove TRPM s before applying subsequent layers of HMA or if they are no longer in the proper configuration for the associated pavement markings in use.
13.Pavement Marking Cover . Provide and install temporary pavement marking cover, Type R, preformed black tape, to cover existing pavement markings, as shown on the plans or directed by the Engineer . Use black pavement marking cover on HMA pavement and PCC pavement in accordance with manufacturer’s specifications . Do not use heat, solvents, or other additional adhesive to install pavement marking cover. Prior to installing the pavement marking cover, air blow or brush the pavement surface to remove surface dust and dirt. Ensure that the tape completely masks the existing marking. Replace pavement marking covers that come loose or that do not meet contract requirements, as directed by the Engineer, and at no additional cost to the Department. Apply and tamp the marking cover in accordance with the manufacturer's recommendations. The use of pavement marking cover is prohibited between November 1 and April 14 due to temperature and weather limitations as defined by manufacturer’s recommendations.
14.Temporary Rumble Strips (Orange) . Do not apply the rumble strips unless the pavement surface temperature is 40°F and rising, and dry . Do not use artificial heat . Clean all foreign and contaminating material from the surface of the pavement prior to application of the rumble strips. The Engineer will consider the pavement to be dry if the underside of small sheet of black plastic taped to the pavement has no visible condensation on the underside after 15 minutes .
a.Temporary Rumble Strips (Orange) in Advance of a Stop Condition . Place as shown in Figure 812-1 . MDOT Standard Specifications for Construction Section 812 8-94 Figure 812 -1: Temporary Rumble Strip s for Use in Advance of a Stop
b.Temporary Rumble Strips (Orange) in Advance of a Work Zone. On freeway projects where a lane closure or crossover shift will be in the same location for 14 consecutive days or longer place three sets of nine rumble strips in advance of a lane closure in each direction of the roadway for a total of six sets of nine rumble strips . Ensure that the rumble strips cover the entire width of the roadway from edge of metal to edge of metal . Place the temporary rumble strips as follows: Apply one set of nine rumble strips, each spaced 1.5 feet apart from edge to edge, placed approximately 700 feet upstream of the beginning of the taper ; MDOT Standard Specifications for Construction Section 812 8-95 Apply one set of nine rumble strips, each spaced 5 feet apart from edge to edge, placed approx imately 1, 400 feet upstream of the beginning of the taper ; and Apply one set of nine rumble strips, each spaced 10 feet apart from edge to edge, placed approximately 2, 800 feet upstream of the beginning of the taper. The completed temporary rumble strip co nsists of one layer of the 0.25- by 4-inch material . Apply the primer to the surface of the pavement only if recommended by the manufacturer . Place the pre-adhesive surface of the rumble strip on the primer or direc tly on the pavement surface, as recommended by the manufacturer . Seat the rumble strips with a minimum of three passes of a 200 -pound weighted roller . If the temporary rumble strips lose their adhesion to the pavement during the life of the project, replace or re-adhere them, as directed by the Engineer . Upon completion of the project, or as directed by the Engineer, entirely remove the temporary rumble strips using a method that does not permanently damage the pavement surface. Provide temporary rumble strips that are composed of a polymer with pre- applied adhesive, orange, and a tensile strength of 250 psi. Provide primer in accordance with the manufacturer’s recommendations .
15.Temporary Traffic Signals. At least 14 days before starting construction on temporary traffic signals, contact the utility company and apply for temporary electric service. Provide electric service on the project and arrange for electric service removal when the project is complete. Ground equipment with a resistance of no greater than 10 ohms. Perform work on signals in accordance with the contract, the requirements of the National Electrical Safety Code (NESC), National Electrical Code (NEC), and NEMA Standards Publication TS-5 for items not identified in the contract. Use signal lamps with brass bases in accordance with ITE Standards . Use the type of traffic signal controller shown on the plans . Before using a traffic signal controller other than as shown on the pl ans, obtain the Engineer’s approval . Provide the Engineer -approved, alternate controller at no additional cost to the Department. MDOT Standard Specifications for Construction Section 812
8-96 Provide, install, operate, inspect, maintain, disconnect, cover, and
remove temporary traffic signals and the required equipme nt and materials . Provide the electric service equipment and the required wiring between the secondary service terminal that is provided by the utility company and the signal controller. Place hoods over or cover signals until they are placed in service. Install the required traffic signal timing for operating the temporary traffic signals. Adjust traffic signal timing, as directed by the Engineer, to ensure that the temporary traffic signal is operational . If the Engineer requires traffic signal timing changes, the Engineer will provide the locations and a signal -timing permit for implementing the approved timing changes. Maintain traffic signals installed or modified for construction for the duration of the project to ensure that the signals perf orm as required. Disconnect and cover the signals when closing the roadway to traffic, as directed by the Engineer . Remove the temporary signals at the end of the contract. Test equipment in operation as a complete installation. Include sequence of operation, continuity, voltage, and ground resistance readings . Provide the results of these tests to the Engineer before placing the installation into service. Notify the Engineer before placing traffic signal installations in service. The Department will not allow the substitution of a portable traffic signal system whe n temporary traffic signals are required.
16.Temporary Portable Traffic Signal (PTS) System . Provide the temporary portable traffic signal (PTS) system as shown on the plans . Each PTS system consists of a minimum of two trailer -mounted, solar -powered PTSs with battery backup. Provide, install, program, and activate the signal system at the initial location. Provide hardwire or radio communication. Operate, inspect, maintain, clean, relocate, reactivate, reprogram, and remove the PTS system from the project. Check the PTS system for required operation at 12-hour intervals when in use on the project . If PTS system failure occurs, provide traffic regulators to control traffic until the PTS system i s operational . If the PTS system fails a second time within 30 calendar days of the first failure, remove the PTS system from the project and provide traffic MDOT Standard Specifications for Construction Section 812
8-97 regulators until the replacement PTS system is installed, activated,
and operating as required. The Contractor is responsible for repair ing or replac ing the PTS system. PTS trailers must be located on the shoulder, outside the travel lane. After positioning the trailer, rest the tires on the ground with wheel chocks or elevate the trailer, with the bot tom of the tires above the ground. Delineate each trailer using three plastic drums or 42-inch channelizing devices . When work operations are suspended and traffic lanes are to be opened for less than 72 hours, the temporary signal may remain in place in yellow -flash mode. Remove the temporary signal from the roadway if the temporary signal will be non-functional for longer than 72 hours . If existing guardrail prevents a trailer from sitting completely on the shoulder, place the PTS system in accordance with the following:
a.Open Lane Approach Side . On the open lane approach side, if existing guardrail prevents the trailer from sitting completely on the shoulder, complete the following: Remove one panel of guardrail at the required PTS trailer location, at least 100 feet from the end of the temporary concrete barrier ; Slide the PTS trailer into the gap so the left tire is on the shoulder and the signal does not encroach into the open lane; Place a terminal end shoe, in accordance with the MDOT Standard Plan R -66 series, and of appropriate type based on existing guardrail, on both blunt guardrail ends; and After removing trail ers, restore the guardrail to the original condition in accordance with section 807.
b.Closed Lane Approach Side . On the closed lane approach side if existing guardrail prevents the trailer from sitting completely on the shoulder, complete the following: Rem ove one extra guardrail panel where the temporary concrete barrier runs through the guardrail ; Slide the PTS trailer into the extra opening in front of the temporary concrete barrier where it runs through the guardrail so the left tire is on the shoulder and the signal does not encroach into the open lane; MDOT Standard Specifications for Construction Section 812 8-98 After removing trailers, restore the guardrail to the original condition in accordance with section 807; and No extruder ending is required on the closed lane approach side.
17.Portable Changeable Message Si gns. Portable changeable message signs (PCMSs) include the following two types of devices (each paid for separately): NTCIP -Compliant Portable Changeable Message Sign . A National Transportation Communications for ITS [Intelligent Transportation Systems] Protocol (NTCIP) compliant PCMS. The NTCIP PCMS will be capable of communication via a cellular network with software provided and installed on a state -owned computer and i nclude an automated PCMS Global Positioning System (GPS) coordinate/location information as noted below . Portable Changeable Message Sign . A non -NTCIP -compliant PCMS meets all requirements outlined herein, except those that are noted to apply only to NTCI P-compliant PC MS.
a.Messaging . The Department will allow the use of PCMS for advance time notification for future events , including closures and planned maintenance work , or information including detours or alternative routes; incident management; constructi on zone backups; and similar conditions. Do not use generic, non- emergency safety messages . If power to the PCMS is lost or in the event of a malfunction, default to one of the following: a screen with an asterisk in each corner , remove d from the clear zone, or a default message approved by the Engineer . Ensure that message sequences consist of no greater than two phases with at least a 2-second display time for each message, and the sum of the display time for both phases is a maximum of 8 seconds. Do not use PCMS for the following: Replacing MMUTCD -required static signing or pavement markings; Replacing a lighted arrow ; Advance notice of new traffic signals or signs; Advertising; or Any message that scrolls or moves across the display. MDOT Standard Specifications for Construction Section 812
8-99 b. Technical Assistance. Provide training and support for the PCMS
and control software via telephone, e-mail, and on-site technical assistance as needed. Assistance may include, but is not limited to, training, bug fixes, and correction of installat ion problems.
c.Warranty . Warranty that the PCMS will be serviced and fully operational during the life of the related project, as defined in subsection 812.03.C .
d.Security . Ensure that the PCMS is secure and complies with the following: Create unique usernam es and passwords (not defaults) for access to the PCMS local controls; Remove all literature (manuals, instructions, etc.) from the PCMS controller enclosure ; Use a padlock, keyed lock, etc ., to prevent access to the controller enclosure; and Provide the E ngineer up to 3 keys, or the lock combination, as well as the usernames and passwords. MDOT may, at any time, inspect PCMS boards that are on site to verify that these security measures are being followed.
e.Installation on the Roadway . Delineate a deployed PCMS using three plastic drums or three 42-inch channelizing devices . The devices used for delineation will be paid for separately using the appropriate pay items. If the PCMS is in use, rest the tires on the ground with wheel chocks or elevate the trailer with the tires off the ground. If a PCMS is not needed, turn it off and remove it from the clear zone in accordance with subsection 812.03.G.5. All equipment, equipment service, and any appurtenances to the PCMS are the full responsibility of the Contractor. In addition to the above-listed requirements, an NTCIP -compliant PCMS must also meet the following: Submittal of Documentation . When installing an NTCIP -compliant PCMS on a project , submit the following documentation to the Engineer:
a.Product data for the PCMS and control software. Within 30 days of contract award or 14 days prior to deployment of PCMS, the Contractor must provide to the Engineer or MDOT Standard Specifications for Construction Section 812 8-100 representative a list of PCMS that will be used on the project . Required i nformation includes, b ut is not limited to, PCMS and GPS equipment make, model number, communication settings, Internet Protocol (IP) addresses, etc. The Engineer will provide an electronic version of the format and information required for integration. Upon deployment of said devices at any time prior to final acceptance of the project, the Contractor must inform the Engineer in writing of the specific PCMS device that has been placed in the field in active service or pending active service ;
b.An electronic version of the user manuals for the PCMS, GPS equipment , and control software; and
c.Training materials for the PCMS, GPS equipment , and control software to be distributed during training. Training. Provide a minimum of one classroom -style training session on PCMS operator interf ace software for NTCIP PCMS and field equipment, including but not limited to, posting and remov ing messages and diagnosing field equipment malfunctions including messaging and communications errors . All training schedules, syllab i, and materials are to be supplied by the Contractor and approved by the Engineer prior to delivery of training. Messaging . MDOT reserves the right to take full messaging control of any PCMS at any time throughout the duration of the project . Control includ es posting any message determined to be appropriate by MDOT u sing the Contractor -supplied software. Technical Assistance. Provide training and support for the PCMS and control software via telephone, e- mail, and on-site technical assistance as needed. Assistance may include, but is not limited to, additional training, bug fixes, correction of installation problems, and correction of communication errors. Preconstruction Test Requirements. Develop a detailed test plan for the PCMS, GPS equipment , and control software, and make revisions as needed until it is approved by the Engineer . This may include, but is not necessarily limited to:
a.Tests for defects in the PCMS such as leaks, faulty wiring, faulty display modules, faulty batteries, firmware bugs, etc.; and MDOT Standard Specifications for Construction Section 812 8-101 (b) Tests that demonstrate properly functioning communications between the PCMS, GPS equipment , and control software. The test procedure should demonstrate successful control of the PCMS from the location where the software has been installed. Conduct all testing in the presence of the Engineer or designated representative. Any problems must be fixed and testing repeated until all elements of the PCMS, GPS equipment , and control software are accepted prior to the start of construction. Payment will not be m ade prior to a successful accepted test .
E.Sign Removal (Permanent Signs )
1.Department -owned Permanent Signs . Remove Department -owned permanent signs and supports as necessary to prevent damage. Remove, handle, store, and reinstall the signs in accordance with Department and manufacturer’s requirements . Store the permanent signs outside the work area at a site within the CIA, as directed by the Engineer . Reinstall Department -owned permanent signs and supports within 1 day of completing the work, in accordance with section 810, unless otherwise directed by the Engineer . Replace signs, supports, or foundations damaged by Contractor operations at no additional cost to the Department.
2.Permanent Signs Owned by Local Ag encies. Remove locally owned signs and supports before starting work in the area. Remove, handle, and store signs in accordance with the manufacturer’s requirements . Store the permanent signs outside the work area within the CIA, as directed by the Engineer . The local agency that owns the sign is responsible for sign and support replacement and related costs.
3.Logo Signs or Tourist Oriented Directional Signs . Date stickers on the back of the signs identify Logo Signs and Tourist Oriented Directional Signs . Contact Michigan Logos, Inc. , at (888) 645-6476 to arrange for removal, storage, and reinstallation of Logo Signs or Tourist Oriented Directional Signs within the CIA . Provide Michigan Logos, Inc. , with at least 14 days notice.
F.Pavement Marking Removal . Remove pavement markings that conflict with proposed temporary traffic markings before making any changes in the traffic pattern. Place temporary pavement markings when pavement markings are removed or obscured for more than 24 hours before a change in the traffic pattern. WR Type R tape and/or WR Type NR p aint MDOT Standard Specifications for Construction Section 812 8-102 must be placed according to subsection 812.03.D.12 before the close of the work day. Do not use paint or bituminous bond coat to cover existing and inappropriate pavement markings . The Contractor may use a Type R temporary pavement marking cover per subsection 812.03.D.13 when authorized by the Engineer . Remove pavement markings in a manner that minimizes damage as much as possible to the surface text ure of the pavement and by methods approved by the Engineer . Methods and equipment that may provide acceptable results are shot blasting, water blasting, and mechanical devices such as grinders, scarifiers, and wire brushes.
1.Longitudinal Removal of Greater than 5 ,000 Feet of Pavement Markings per Stage. Remove pavement markings using self-propelled truck -mounted removal equipment . The removal truck must be capable of eliminating all airborne dust while operating and of continuously vacuuming up the removal debris . If the debris generated during the removal process is greater than the vacuuming capability of the removal truck, a self -propelled sweeper operating immediately behind the removal truck is required such that all removal debris is immediately cleaned up.
a.Asphalt Surfaces. Use any Engineer -approved type of self-propelled truck -mounted removal equipment except water blasting, provided the equipment is capable of continually vacuuming the removal debris.
b.Concrete Surfaces to B e Removed d uring Construction . Use any Engineer -approved type of self -propelled truck -mounted removal equipment provided the equipment is capable of continually vacuuming the removal debris.
c.Concrete Surfaces to Remain in Place. Use an Engineer -approved self -propelled truc k-mounted water blaster to minimize the scarring of the concrete surface. Use equipment capable of continually vacuuming the removal debris as approved by the Engineer.
2.Longitudinal Removal of Less than 5 ,000 Feet per Stage of Pavement Markings and Removal of Special Markings. Obtain the Engineer’s approval for one of the following removal methods and minimize damage to the surface texture of the pavement during removal . Use one or more of the following removal methods:
a.Sandblasting using air or water; MDOT Standard Specifications for Construction Section 812 8-103 b. Shot blasting;
c.High-pressure water;
d.Steam or superheated water; or
e.Mechanical devices such as grinders, sanders, scrapers, scarifiers, and wire brushes. Remove pavement markings such that all removal debris is cleaned up as the operation progresses . Other than for the removal of turning guide lines, the removal equipment must be capable of eliminating the airborne dust while operating and of continuously vacuuming up the removal debris . If the debris generated during the removal process is greater than the vac uuming capability of the removal equipment, all remaining debris must be immediately swept up.
G.Maintaining Traffic along Project . Maintain traffic along the project in a safe and orderly manner . Maintain pedestrian mobility within the CIA as required by the contract . If access cannot be accommodated, provide temporary modifications or a clearly marked detour.
1.Traffic Maintained by Part -Width Intersection Construction . If part-width construction is required, construct the new pavement on half an intersection at a time. Maintain through traffic on the remaining half intersection and shoulders . The contract may require temporary widening and surfacing of the shoulders.
2.Access Provisions for Pedestrians and Local Traffic. Use temporary roadways, culverts, railroad crossings, bridges, and other means approved by the E ngineer to provide local traffic access to property adjacent to the project . Obtain the Engineer’s approval for temporary culvert material before placement . Provide railroad crossings for local traffic in accordance with subsection 107.20. Use pavement gaps or other means approved by the Engineer to maintain two-way traffic across intersections. Provide a clear roadway on the crossroad at least 20 feet wide. The Engineer may vary the pavement gap lengths based on the types of vehicles passing through the intersection. The Engineer may allow closing a minor road or street intersection with the approval of the local government agency. MDOT Standard Specifications for Construction Section 812 8-104 3. Traffic Maintained on Shoulder . If the contract requires maintenance of traffic on the shoulder, improve the shoulder as shown on the plans. Sweep the shoulder and remove debris prior to placing traffic on the shoulder and throughout the time the shoulder is used to maintain traffic . Properly dispose of collected debris. Maintain the shoulder as required and provide labor, material, and equipment to immediately repair and reconstruct the shoulder . Apply surfacing material and dust palliatives as directed by the Engineer.
4.Shoulders under Construction . Ensure that shoulder areas adjacent to open traffic lanes are in a safe and usable condition during non-working hours , unless otherwise shown in the plans . Provide the following signs and channelizing devices :
a.Install one W21 -5 “Shoulder Work” sign before the beginning of the unsatisfactory shoulder ;
b.Install the relevant W8-9a “Sh oulder Drop-Off,” W8 -4 “Soft Shoulder,” or W8-4a “Rough Shoulder” signs before the unsatisfactory shoulder and at no greater than 1 -mile intervals along the non- compliant shoulder ;
c.Place plastic drums on the taper, as required by MMUTCD, Part 6, for shoulder closures at the location where the unsatisfactory shoulder begins ; and
d.Place channelizing devices at intervals directed by the Engineer along the length of the affected shoulder without encroaching on the required minimum lane width.
5.Storage Restrictio ns for Vehicles, Equipment, and Materials. Park vehicles and store material in areas that provide minimum exposure to pedestrian and vehicular traffic.
a.Working Hours . During working hours, park workers’ vehicles, idle construction equipment, and stored mat erials that cannot be removed from the project as follows: At least 20 feet behind curb faces on roadways with barrier curb; and At least 30 feet from the pavement edge on roadways with shoulders or mountable curbs.
b.Non-working Hours . During non- working hours, remove workers’ vehicles and obtain the Engineer’s approval to store idle construction equipment and materials that cannot be removed MDOT Standard Specifications for Construction Section 812 8-105 from the project a t least 30 feet from the traffic lanes if topography and right -of-way allow.
c.Exceptions. When the setbacks described in the previous subsections are not possible, furnish and maintain suitable and sufficient signs, lights, barricades, or concrete barriers to delineate parked vehicles, equipment , and stored material, subject to approval by the Engineer. The Department will not make additional payment for devices used to delineate stored equipment and material.
6.Maintaining Lights . Do not mix different light styles or designs on a project. Position and maintain Type A, Type C, and Type D lights to ensure visibility on a clear night from a distance of 3, 000 feet. Ensure the visibility of Type B, high-intensity lights on a sunny day from a distance of 1,000 feet when the sun is not directly on or behind the light . Replace the power source if lights do not meet the visibility requirements . Provide and maintain Type C and Type D light -emitting diode (LED ) lights that at least meet the requirements in the MMUTCD and maintain the intensity requirement of 2 candelas in the field. Ensure that lights work at the time of initial installation and at stage changes during the project . During the project, ensure that at least 95% of the total number of active lights work . Ensure that no more than three adjacent lights are non- operational at any time. Change power sources when directed by the Engineer . Replace damaged or non-functioning lights at no additional cost to the Department.
7.Cleaning Traffic Control Devices. Clean barrier reflectors , plastic drums, 42-inch channelizing devices , tubular markers, delineators, signs, barricades, and attached lights in operation on the project to ensure that they meet required luminosity . Adjust cleaning frequency based on the exposure of the t raffic control devices to unfavorable environmental conditions and the accumulated dirt on the devices.
8.Traffic Regulators. Provide traffic regulators for each direction of approaching traffic on primary and intermediate roads if the movement of traffic is restricted to alternating one-way traffic through the construction area. The Engineer may require intermediate traffic regulators at access points throughout the work zone. Equip traffic regulators with the following:
a.High-visibility safety apparel as specified in the MMUTCD ; MDOT Standard Specifications for Construction Section 812 8-106 b. “Stop/Slow” or “Stop/Stop” sign paddles; and
c.A two -way handheld radio system and a standby backup system if traffic regulators are not visible to each other . Notify and advise traffic regulators of information required to maintain traffic . Illuminate traffic regulator stations at night per subsection 812.03.H . Provide traffic regulators and other traffic control devices, as approved by the Engineer, to move materials and equipment that may interfere with traffic . The Department will not make additional payment for providing traffic regulators and other traffic control devices necessary only for the Contractor’s convenience. Ensure that persons designated to regulate traffic receive annual training on proper traffic regulating procedures . At a minimum, t his training must consist of viewing the video “ How to Safely Regulat e Traffic in Michigan” and reading the current MDOT handbook, Traffic Regulators Instruction Manual . Maintain documentation on the persons who have been trained and the dates of the training and provide to the Engineer upon request.
9.Traffic Regulating Operations . Ensure that traffic -regulating operations do not exceed 2 miles or stop traffic for more than 10 minutes at a time unless otherwise directed by the Engineer.
H.Lighting f or Night Work . Furnish, install, operate, maintain , and replace, as needed, fixed, portable, or equipment -mounted lighting systems that provide lighting to ensure worker and inspector safety on and around the worksite . Provide lighting that allows workers and inspectors to clearly conduct all operations and inspections during hours of darkness . Lighting systems provided by the Contractor must meet the requirements set forth in MIOSHA Rule 408.40133 Illumination, MIOSHA Rule 408.42223(7) Traffic Control, section 706, and the contract. Provide and position the lamps to meet the following lighting requirements: Provide a minimum illumination intensity of 10 foot-candles (108 lux) on a jobsite where construction work is being performed. Maintain a mini mum of 5 foot-candles (54 lux) throughout the entire area of operation where workers may pass through on foot or are present but are not performing construction work . Vehicle or equipment headlights are not considered an approved light source. Lighting levels will be measured with an illuminance meter . Readings from smartphones are not acceptable. Readings will be taken where the work is being performed in a horizontal plane 3 feet above the pavement or ground surface . When necessary, provide additional li ghts to overlap the MDOT Standard Specifications for Construction Section 812 8-107 footprints of the lights so the lighting requirements are continuous, and do not fall below the minimum lighting requirements throughout the work area. Submit a work area lighting plan to the Engineer for review and approval a minimum of 14 calendar days prior to the start of work . The Engineer will have 7 calendar days to review the plan for approval or provide comments for plan revisions required to obtain approval . At a minimum, the plan must include the proposed lighting locations f or construction equipment, vehicle and pedestrian paths, identification of a person or persons of authority (including contact information) on the project site responsible to execute the plan requirements, and measures that will be taken to ensure compliance with the plan. All costs and any additional time required to obtain an approved work area lighting plan will not be cause for delay or impact claims. Design and operate the lighting system to avoid glare that interferes with traffic, workers, or inspection personnel . Aim flood, spot , or stadium type luminaires downward at the work and rotated outward no greater than 30 degrees from nadir (straight down) . Position balloon lights at least 12 feet above the roadway. Design the lighting system to light the work area without spilling over to adjoining property . Modify the lighting system, if directed by the Engineer, by rearranging the lights or adding hardware to shield the lights when the lighting system is disturbing adjoining properties. Provid e a power source that adequately powers the lamps to their full capacity . Provide all lighting equipment in good operating condition and in accordance with applicable safety and design codes. Provide backup lighting to replace lights and equipment during nighttime operations . Store the backup equipment on the project site and have it available for use at all times during the nighttime operations . The backup systems must meet the same criteria as the primary system. Drive through and observe the lighted ar ea from all traveled directions, including crossroads after initial lighting set up to determine the adequacy of placement and potential for glare. Adjust lighting alignment if necessary . Ensure that the alignment of the lighting does not interfere with or impede traffic on open roadways. At any time during the course of the nighttime work, should the lighting not meet the requirements, the work must be halted until adequate lighting is provided. This suspension of work will be at no additional cost to the Department , and the Contractor cannot receive an extension of time to complete the work. MDOT Standard Specifications for Construction Section 812 8-108 Use balloon lighting for nighttime traffic regulating operations . Position the balloon lighting for traffic regulators so the light illuminates the front of the traffic regulator without casting a shadow on the front of the regulator, the light or equipment does not impair the regulator’s vision, and the equipment does not impede the regulator’s escape path. Position the lighting so the light does not wash out the lig hted arrow at the regulator’s station and does not obscure the lighted arrow . Position lighting so it does not create glare or shine directly in the eyes of oncoming drivers. Illuminate the traffic regulator’s station with a minimum illumination intensity of 10 foot-candles (108 lux) . Lighting devices used to illuminate nighttime traffic regulator operation that have failed or have been damaged must be replaced immediately. Mount the light fixtures on the construction equipment in a mobile operation in suc h a way that the view of the equipment operator is not obstructed and a secure connection to the equipment is ensured with minimum vibration. Provide each paver with the minimum illumination requirements so the operator and paving crew can clearly see the material going into the hopper and the auger area and for alignment . Provide a continuous power source to ensure that the lighting is in operation at all times during work . The light should be adjustable up and down and rotatable horizontally . The area behind the paver must be lighted so the work and operations can be seen clearly and inspected properly. Equip each roller with four headlights with two facing in each direction of travel . Turn headlights off when facing oncoming traffic and use them only when moving equipment from one location to another. Provide a continuous power source on each roller with a light tower . The light tower must be a minimum of 4 feet higher than the roller. When light equipment is not in use, maintain as detailed in s ection 812.03.G.5.
I.Chip Seal Surface Treatment and HMA Construction . Maintain traffic during the placement of chip seals and HMA.
1.General . Complete rolling and allow the surface to cool before allowing traffic on chip seal treated and HMA surfaces . If shoulders cannot be used for two-way traffic, arrange for alternating one-way traffic around the roadway section being surfaced. If conditions allow, and the Engineer approves, route traffic away from sections of roadway being surfaced. Provide and maintain temporary routes in a condition approved by the Engineer and at no additional cost to the Department. MDOT Standard Specifications for Construction Section 812 8-109 2. Chip Seal Surface Treatment . Unless closing the road to traffic, treat half of the road width at a time . Do not allow traf fic on the treated section of roadway for at least 30 minutes after completion of cover material application and rolling.
3.Aggregate Surface and HMA . To handle traffic during aggregate surface and HMA applications, divide the project into sections . The Engineer will determine the length of these sections . Keep traffic off the work area of each section during surface preparation, bond coat application, HMA placement, and rolling. Complete each section and open it to traffic before closing the next section. Provide local traffic access to property along the project.
4.Protection of New HMA Pavements . Keep traffic off new HMA pavement by installing cones or drums on the tangent in addition to the traffic control devices specified in the plans or MMUTCD. Place additional cones or drums at crossroads and commercial driveways to direct the traffic to open travel lanes. After completing compaction, if the air temperature is below 70°F, open the pavement to traffic . If the air temperature is from 70°F to 80°F, keep traffic off the pavement for an additional hour . If the air temperature is greater than 80°F, keep traffic off the pavement for 2 hours.
5.Staggered Lane Endings with Vertical Longitudinal Joints . To avoid uneven longitudinal joints, surface lanes within one load of the same ending point at the end of the day’s operation. The center lanes of two -way pavements with an odd number of lanes are excluded from this requirement. Before starting HMA paving operations, furnish the required signs for emergency signing in case staggered lane endings, causing uneven longitudinal joints, must remain open to traffic overnight. If uneven longitudinal joints cannot be avoided and remain open overnight, maintain traffic in ac cordance with the following:
a.If the points of ending of adjacent lanes are at least 250 feet apart, install temporary signs as required; and
b.If the points of ending of adjacent lanes are less than 250 feet apart, install plastic drums as called for in the contract at 30-foot intervals along the length of each side of the affected pavement, and place W21 -4 “Road Work Ahead” signs ahead of the pavement area. MDOT Standard Specifications for Construction Section 812 8-110 6. Tapered Overlapping Longitudinal Joints . Unless delayed by inclement weather or otherwise approved by the Engineer, do not expose the tapered overlapping longitudinal joints to traffic for longer than 24 hours after placement . If using a tapered joint, place W8-9b “Uneven Lanes” signs before, and at no greater than 1 -mile intervals along the length of, the joint before allowing traffic on the paved lane. Place at least two W8-9b “Uneven Lanes” signs in each direction. Leave these signs in place until the adjacent lane is constructed to the same elevation . See subsection 501.03.2.c for allowable tapered overlapping joint details.
J.Conspicuity Tape for Vehicles and Equipment in Work Zones . Equip all vehicles and equipment in the work zone, and all vehicles delivering materials or equipment to the project, with red and white conspicuity tape. Apply one 2- inch wide horizontal stripe of red and white conspicuity tape along at least 50% of each side of and across the full width of the rear of the vehicle or equipment. Delineate lighted arrow trailers and portable change able message signs with 2 -inch-wide red and white conspicuity tape on each of the four sides where tape application is practical. 812.04. Measurement and Payment Pay Item Pay Unit Minor Traf Devices ........................................................................... Lump Sum Traf Regulator Control ..................................................................... Lump Sum Sign, Type __, Temp, Prismatic, Furn ............................................ Square Foot Sign, Type __, Temp, Prismatic, Oper ........................................... Square Foot Sign, Type B, Temp, Prismatic, Special, Furn ................................ Square Foot Sign, Type B, Temp, Prismatic, Special, Oper ............................... Square Foot Sign Cover ................................................................................................ Each Sign Cover, Type I .................................................................................... Each Lighted Arrow , Type __, Furn .................................................................... Each Lighted Arrow , Type __, O per ................................................................... Each Lighted Arrow , Type C, Standby ................................................................ Each Sign, Portable, C hangeable Message, Furn ............................................. Each Sign, Portable, Changeable Message, Oper ............................................ Each Sign, Portable, Changeable Message, NTCIP -Compliant, Furn ............... Each Sign, Portable, Changeable Message, NTCIP -Compliant, Oper .............. Each High Intensity Light, Type B, Furn ............................................................. Each High Intensity Light, Type B, Oper ............................................................ Each Plastic Drum, Fluorescent , Furn ............................................................... Each Plastic Drum, Fluorescent , Oper ............................................................... Each Channelizing Devic e, 42 inch, Fluorescent, Furn ..................................... Each MDOT Standard Specifications for Construction Section 812 8-111 Channelizing Device, 42 inch, Fluorescent, Oper ..................................... Each Barricade, Type III , High Intensity, Double Sided, Lighted, Furn ............... Each Barricade, Type III , High Intensity, Double Sided, Lighted, Oper .............. Each Conc Barrier , Temp, Furn ........................................................................... Foot Conc Barrier , Temp, Oper .......................................................................... Foot Conc Barrier , Temp, Adj ............................................................................. Foot Conc Barrier , Temp, Relocated .................................................................. Foot Conc Barrier Reflector Replacement ........................................................ Each Conc Barrier Ending, Temp, Detail __, Furn ............................................. Each Conc Barrier Ending, Temp, Detail __, Oper ............................................. Each Conc Barrier Ending, Temp, Detail __, Adj ................................................ Each Conc Barrier Ending, Temp, Detail __, Relocated ..................................... Each Pavt Mrkg, Wet Reflective, Type R, Tape, __ inch, (color), Temp .............. Foot Pavt Mrkg, Wet Reflective, Type NR, Paint, __ inch, (color), Temp ........... Foot Pavt Mrkg, Wet Reflective, Type NR, Tape, __ inch, (color), Temp ............ Foot Pavt Mrkg, Wet Reflective, Type R, Tape, __ inch, Crosswalk ................... Foot Pavt Mrkg, Wet Reflective, Type R, Tape, 12 inch, Cross Hatching, (color) ........................................................................................ Foot Pavt Mrkg, Wet Reflective, Type R, Tape, __ inch, Stop Bar ..................... Foot Pavt Mrkg, Wet Reflective, Type R, Tape, (legend) ................................... Each Pavt Mrkg, Wet Reflective, Type R, Tape, (symbol) .................................. Each Pavt Mrkg, Type NR, Paint, __ inch , Crosswalk ......................................... Foot Pavt Mrkg, Type NR, Paint, 12 inch, Cross Hatching, (color) .................... Foot Pavt Mrkg, Type NR, Paint, __ inch, Stop Bar ........................................... Foot Pavt Mrkg, Type NR, Paint, (legend) ........................................................ Each Pavt Mrkg, Type NR, Pa int, (symbol) ........................................................ Each Pavt Mrkg, Longit, Water Blasting, 6 inch or less Width, Rem ................... Foot Pavt Mrkg, Longit, Water Blasting, Greater than 6 inch Width, Rem ......... Foot Raised Pavt Marker, Temp, Type __, (color), Monodirectional .................. Each Raised Pavt Marker, Temp, Type __, (color), Bidirectional ........................ Each Pavt Mrkg, Longit, 6 inch or Less Width, Rem ........................................... Foot Pavt Mrkg, Longit, Greater than 6 inch Width, Rem ................................... Foot Pavt Mrkg Cover, Type R, (color) ............................................................... Foot Part Width Intersection Construction ........................................................ Each Dust Palliative, Applied ................................................................................ Ton Culv, Temp ................................................................................................ Each TS, Temp, Furn ......................................................................................... Each TS, Temp, Oper ........................................................................................ Each PTS System, Temp, Furn .......................................................................... Each PTS System, Temp, Oper ......................................................................... Each Ltg for Night Work ............................................................................ Lump Sum Temp Rumble Strips (Orange), Stop Condition .......................................... Foot Temp Rumble Strips (Orange), Advance of a W ork Zone .......................... Foot Delineator, Flexible, Temp, Furn ............................................................... Each MDOT Standard Specifications for Construction Section 812 8-112 Delineator, Flexible, Temp, Oper ............................................................... Each Delineator, Panels, Temp, Furn ................................................................. Each Delineator, Panels, Temp, Oper ................................................................ Each Glare Screen, Temp ................................................................................... Foot Glare Screen, Temp, Relocated ................................................................. Foot Glare Screen, Temp, Complete Section, Replaced ................................... Each Tubular Marker ......................................................................................... Each Tubular Marker, Replacement ................................................................... Each Conc Barrier -Mtd Temp Sign System, Furn .............................................. Each Conc Barrier -Mtd Temp Sign System, Oper .............................................. Each Reflective Panel for Temp Sign Support, Furn .......................................... Each Reflective Panel for Temp Sign Support, Oper ......................................... Each If the contract does not include pay items for improving the shoulder to maintain traffic, the Engineer will measure and the Department will pay for shoulder improvements as extra work. The Department will pay for additional traffic control devices if changes benefit the Department . The Department will not pay f or additional devices required for the Contractor’s convenience unless the Contractor can show a benefit to the Department.
A.Damage Compensation . Notify the Engineer of damaged temporary traffic control devices . Before replacement and disposal, allow the Engineer to verify the condition of damaged temporary traffic control devices eligible for payment . Damage will be assumed to have occurred from vehicular traffic, unless otherwise documented. The Department will pay as follows for replacing temporary traf fic control devices or equipment that are placed appropriately and damaged by vehicular traffic, other than the Contractor's vehicles and equipment . Devices will be assumed to be placed appropriately unless otherwise documented. Replacement will be made up to project completion (excluding water and cultivating) and acceptance, as follows:
1.The Furnished unit price for temporary traffic control devices paid for as furnished pay items , excluding plastic drums and 42- inch channelizing devices ;
2.The unit price for devices not paid for as Furnished ;
a.Plastic drums and 42-inch channelizing devices will be paid for at a set rate of $35 per plastic drum and $18 per damaged 42-inch channelizing device. Prior to payment , the plastic drum or 42-inch channelizing device must be classified as unacceptable per the ATSSA MDOT Standard Specifications for Construction Section 812 8-113 Quality Guidelines for Temporary Traffic Control Devices and Features and spray -painted with an X . All plastic drums and 42- inch channelizing devices that are classified as marginal per the ATSSA Quality Gui delines for Temporary Traffic Control Devices and Features during the project will have blue survey ribbon tied to the handle. MDOT is responsible for marking marginal devices . Removal and replacement will take place as defined under the Quality Classifica tions and Requirements section of the ATSSA Quality Guidelines for Temporary Traffic Control Devices and Features and will be at no additional cost to the Department. If at any time, any Contractor is witnessed tampering with the marginal marking method, the Engineer may require all marginal devices on the project to be upgraded to acceptable outside the time frames detailed in the ATSSA Quality Guidelines for Temporary Traffic Control Devices and Features .
3.The manufacturer's invoiced cost for devices required by the Engineer and not included in the unit price for other relevant pay items; and
4.The manufacturer’s invoiced cost for damaged equipment included in a lump sum pay item for maintaining traffic.
B.Cleaning Traffic Control Devices. The unit prices for traffic control devices include the cost of cleaning traffic control devices .
C.Furnished Pay Items . For pay items designated as furnished, the Engineer will measure and the Department will pay for the maximum number of units required by the Engineer at one time on the project. The Engineer will measure Sign, Type __, Temp, Prismatic, Furn as the total cumulative area of the maximum number of each sign legend that is in use during the course of the project unless previously paid. The uni t price for Sign, Type __, Temp, Prismatic, Furn includes the cost of portable or driven sign supports. Sign, Type B, Temp, Prismatic, Special, Furn will be paid for the same as described for the pay item Sign, Type, __, Temp, Prismatic, Furn . In addition, the pay item includes the fabrication of all initial route markers and overlays for the Type B, Temporary, Prismatic, Special Signs. The unit prices for furnished pay items include the cost of the following:
1.Providing the item in operable condition with required equipment, supplemental weights, hardware, and labor;
2.Initially installing the item; and MDOT Standard Specifications for Construction Section 812 8-114 3. Replacing items damaged by vehicular traffic other than by the Contractor's vehicles or equipment. The Department will pay for furnished pay it ems once per project when placed into operation, unless the Engineer approves a price adjustment for an authorized extension of time.
D.Operated Pay Items. For pay items designated as operated, the Engineer will measure and the Department will pay for the maximum number of units required by the Engineer at one time on the project. The Engineer will measure Sign, Type __, Temp, Prismatic, Oper as the total cumulative area of the maximum number of each sign legend that is in use during the course of the project unless previously paid. Sign, Type B, Temp, Prismatic, Special, Oper will be paid for the same as described for the pay item Sign, Type __, Temp, Prismatic, Oper . Payment for operated items also includes the removal of all portable or driven sign supports (including post stubs and ballast) used to install the Type B, Temporary, Prismatic, Special Signs . Payment for operated items will also include the installation and/or removal of all overlays used to modify portions of Type B, Temporary, Prismatic, Special Signs as specified on the plans or proposal or required by the Engineer and include s all equipment and material necessary to install and/or remove the overlays as required for the life of the contract. When sign overlays, including different route markers, are used to modify portions of Type B, Temp orary, Prism atic, Speci al Signs , only the overlay will be paid for as additional squar e footage of Sign, Type B, Temp, Prismatic, Special, Furn. The unit prices for operated pay items, with the exception of Conc Barrier , Temp Oper and TS, Temp, Oper include the cost of the following:
1.Operating;
2.Inspecting and maintaining;
3.Relocating unless a specific pay item exists for relocation of the item (i.e., barrier endings) ; and
4.Removing the item from the project.
E.Minor Traffic Devices and Traffic Regulator Control . The Department will make partial payments for Minor Traf Devices and Traf Regulator Control in accordance w ith Table 812-2 . The Department will not allow claims for additional compensation for inconvenience or delay caused by Department -performed routine maintenance operations. MDOT Standard Specifications for Construction Section 812 8-115 Table 812- 2: Partial Payment Schedule for Minor Traf Devices and Traf Regulator Control Percent of Original Contract Amount Earned Total Percent of Unit Price Paid First use 50% 50% 75% 90% 100%
1.Minor Traffic Devices. The unit price for Minor Traf Devices includes the cost of the following:
a.Providing, installing, maintaining, relocating, and removing traffic devices not shown on the plans;
b.Maintaining local traffic including, but not limited to, pedestrian walkways and crossways; maintaining access for residents , business owners, delivery trucks, emergency vehicles , and school buses ; and maintaining local bike paths;
c.Removing, storing, and reinstalling Department -owned permanent signs and supports; and
d.Installing required safety enhancement(s) including reflective conspicuity tape on vehicles and equipment.
2.Traffic Regulator Control . The unit price for Traf Regulator Control includes the cost of the following:
a.Providing personnel;
b.Providing and operating equipment; and
c.Providing traffic regulator training in accordance with subsection 812.03.G.8.
F.Temporary Roadway and Approaches. The Department will pay separately for constructing and maintaining temporary roadways and approaches using the following relevant pay items:
1.Earth excavation;
2.Temporary culverts ;
3.Temporary structures ;
4.Temporary traffic control device;
5.Surfacing material ; and
6.Dust palliatives. MDOT Standard Specifications for Construction Section 812 8-116 G. Sign Cover . The Department will pay for the maximum number of sign covers that are required at one time on the project . The unit price for Sign Cover includes the cost of furnishing, installing, and removing the sign covers. The Engineer will measure only approved materials and hardware for payment. The unit price for Sign Cover, Type I includes the cost of providing shop drawings, fabricating, furnishing, installing, and removing a Type 1 sign cover .
H.Lighted Arrow , Type C, Standby . The Department will pay for Lighted Arrow , Type C, Standby only if the pay item is shown on the plans . The cost of providing a fully operable unit and placing it on standby, readily available to replace a damaged unit, is included in the unit price for Lighted Arrow , Type C, Standby . The Department will pay only once for the standby unit during the project. The Department will allow the use of the standby unit to replace a unit removed from service for maintenance but will not pay for replacing the standby unit.
I.Sign, Portable, Changeable Message
1.Sign, Portable, Changeable Message, Furn includes all material , communication devices, equipment , and labor required to furnish a PCMS and install at the location as depicted on the plans or as directed by the Engineer . The work for furnishing includes site delivery and setup, including initial testing and training, and the removal of the PCMS upon completion of the project.
2.Sign, Portable, Changeable Message, Oper includes the cost of programming and operating the sign in accordance with subsection 812.04.E .
J.Sign, Portable, Changeable Message, NTCIP -Compliant
1.Sign, Portable, Changeable Message, NTCIP -Compliant, Furn includes all material, communication devices, equipment , and labor required to furnish a PCMS and install at the location as depicted on the plans or as directed by the Engineer . The work for furnishing includes site delivery and setup, including initial testing and training, and the removal of the PCMS upon completion of the project.
2.Sign, Portable, Changeable Message, NTCIP -Compliant, Oper includes all material, communication devices, equipment, and labor required to operate, control, inspect, maintain, and relocate the PCMS throughout the life of the project. MDOT Standard Specifications for Construction Section 812 8-117 K. Barricade, Type III , High Intensity, Double Sided, Lighted, Furnished . The unit price for Barricade, Type III , High Intensity, Double Sided, Lighte d, Furn includes the cost of providing and installing barricades, each with supplemental weights, and two Type C or Type D lights.
L.Concrete Barrier, Temporary
1.Furnish Barrier . The unit price for Conc Barrier , Temp, Furn includes the cost of providing and installing concrete barriers in the initial location with barrier reflector markers attached. The Engineer will measure and the Department will pay for providing and installing one Type B High Intensity Light, Furn and one Type B High Intensity Light, Oper on the concrete barrier approaching taper or tangent breakpoint, as shown on in the plans or the MDOT Standard Plan R -126 series.
2.Operate Barrier . The unit price for Conc Barri er, Temp, Oper includes the cost of operating, maintaining, and removing concrete barrier from the project.
3.Adjust Barrier . The unit price for Conc Barrier , Temp, Adj includes the cost of moving the temporary concrete barrier and tapers, including barriers and tapers located outside the roadbed, laterally to a new alignment on the same roadbed.
4.Relocate Barrier . The Engineer will not measure a temporary concrete barrier move as Conc Barrier , Temp, Relocated if it involves work defined in subsection 812.04.L.3. The unit price for Conc Barrier , Temp, Relocated includes the cost of relocating temporary concrete barrier longitudinally on the same roadbed or to another roadbed, including temporarily storing the barrier . Temporary storage of the barrier includes removing, loading, and hauling the barrier to a temporary storage site followed by reloading, hauling, and re- installation in the new location.
5.Barrier Reflector Replacement . The unit price for Conc Barrier Reflector Replacement includes the cost of removing damaged markers from temporary concrete barrier sections after initial placement and providing and installing new barrier reflectors .
M.Temporary Concrete Barrie r Ending . The Engineer will measure and the Department will pay for temporary concrete barrier endings specified for Detail 1 and Detail 3 as Conc Barrier , Temp . The Department will pay for removing and reconstructing guardrail required for Detail 3 in accordance with section 807. MDOT Standard Specifications for Construction Section 812 8-118 The Engineer will measure and the Department will pay for temporary concrete barrier endings specified for Detail 2, Detail 4, and Detail 5 in accordance with subsections 812.04.M.1 through 812.04.M.4.
1.Furnish Barrier Ending . The unit price for Conc Barrier Ending, Temp, Furn includes the cost of the following:
a.Providing and delivering attenuators to the project as shown on the plans or directed by the Engineer;
b.If applicable, constructing attenuator base pads, foundations, anchor blocks, and backup units;
c.Installing the hardware, appurtenances, and attenuators;
d.Connect ing the unit to the backup and to the front anchoring system;
e.Providing and installing transition assemblies, transition panels, end panels, and other miscellaneous accessories for connecting to concrete barrier ;
f.Ensuring that an individual trained by the manufacturer in the installation of impact attenuator systems is present during attenuator installation; and
g.Providing and installing an object marker to the nose of the attenuator.
2.Operate Barrier Ending . The unit price for Conc Barrier Ending, Temp, Oper includes the cost of the following:
a.Repairing the attenuator during construction;
b.Ensuring that an individual trained by the manufacturer in the installation and repair of impact attenuator systems is present during all attenuator repairs and final attenuator removal ;
c.Ensuring that the fluid inside water -filled attenuator systems does not freeze at any time during operation, providing environmental ly safe anti -freezing agents as needed, and recovering all fluids containing anti -freezing agents when draining water -filled attenuator systems.
d.Performing f inal r emov al and dispos al of the attenuator after the attenuator is no longer needed; and
e.If appli cable, performing final r emov al and dispos al of attenuator base pads, foundations, anchor blocks, backups, and associated hardware after the attenuator is no longer needed. MDOT Standard Specifications for Construction Section 812 8-119 3. Adjust Barrier Ending . The unit price for Conc Barrier Ending, Temp, Adj includes t he cost of moving the temporary concrete barrier ending, including those located outside the roadbed, laterally to a new alignment on the same roadbed. The unit price for Conc Barrier Ending, Temp, Adj includes the cost of the following:
a.Removing the attenuator , connections, hardware, and appurtenances from the existing location;
b.If applicable, r emoving attenuator base pads, foundations, anchor blocks , and backup units from the existing location;
c.If applicable, c onstructing attenuator base pads, foundations, anchor bloc ks, and backup units at the new location; and
d.Transporting and installing the attenuator, connections, hardware, and appurtenances in accordance with the manufacturer’s specifications at the new location. If applicable, providing ha rdware and appurtenances, as needed, for attenuator installation at the new location is included.
4.Relocate Barrier Ending . The Engineer will not measure a temporary barrier ending move as Conc Barrier Ending, Temp, Relocated if it involves work defined in subsection 812.04.M.3. The unit price for Conc Barrier Ending, Temp, Relocated includes the cost of moving the temporary concrete barrier ending longitudinally on the same roadbed or to another roadbed , including temporarily storing the barrier ending. Temporary storage of the barrier ending includes loading and hauling the ending to a temporary storage site followed by reloading and hauling to the new location. The unit price for Conc Barrier Ending, Temp, Relocated includes the cost of the following:
a.Removing the attenuator , connections, hardware, and appurtenances from the existing location;
b.If applicable, r emoving attenuator base pads, foundations, anchor blocks , and backup units from the existing location;
c.If applicable, c onstructing attenuator base pads, foundations, anchor bloc ks, and backup units at the new location; and
d.Transporting and installing the attenuator , connections, hardware, and appurtenances in ac cordance with the manufacturer’s specifications at the new location. If applicable, providing hardware and appurtenances, as needed, for attenuator installation at the new location is included.
N.Removing Pa vement Markings and Temporary Pavement Markings MDOT Standard Specifications for Construction Section 812 8-120 1. Rem oving Pavement Markings
a.The Department will pay for the removal of longitudinal markings as directed by the Engineer on all HMA surfaces and on concrete surfaces to be removed as Pavt Mrkg, Longit, Rem of the required width. The unit prices for Pavt Mrkg, Longit, Rem pay items include the cost of removing existing longitudinal permanent markings and/or temporary Type NR markings.
b.The Department will pay for the removal of longitudinal markings on concrete surfaces to remain in place as Pavt Mrkg, Longit, Water Blasting, Rem of the width required. The unit prices for Pavt Mrkg, Longit, Water Blasting, Rem pay items include the cost of removing existing longitudinal permanent markings and/or temporary Type NR markings.
c.The Department will pay for removing spec ial markings as Rem Spec Mrkg in accordance with subsection 811.04. E.
2.Temporary Pavement Markings. The Engineer will measure temporary pavement markings of the type required as the actual length of equivalent line placed. The Engineer will not measure the skips in dashed lines regardless of the type or width of markings.
a.Non-Removable (Type NR) Pavement Markings. The unit price for the relevant Pavt Mrkg, Wet Reflective, Type NR, Paint, Temp and Pavt Mrkg, Wet Reflective, Type NR, Tape, Temp pay items include the cost of providing and placing temporary pavement markings.
b.Removable (Type R) Pavement Markings. The unit prices for Pavt Mrkg, Wet Reflective, Type R, Tape, 4 inch, (color), Temp; Pavt Mrkg, Wet Reflective, Type R, Tape, 6 inch, (color) , Temp; and Pavt Mrkg Cover, Type R, (color) include the cost of providing, placing, removing, and disposing of temporary pavement marking. Payment will be per foot measured along the length of the placed pavement marking.
3.Temporary Special Markings. Replace temporary special pavement markings that fail , as directed by the Engineer . Temporary special pavement markings that fail due to improper installation (inconsistent with the manufacturer’s specifications ) will not be paid for separately . The Engineer wi ll document the failure and meet with the Contractor to discuss the reason for failure. If the Engineer determines that the failure was due to traffic, reapplication of the temporary special pavement marking will be paid for at the contract unit price. MDOT Standard Specifications for Construction Section 812 8-121 a. Non-Removable ( Type NR), Paint . Pavt Mrkg, Type NR, Paint, __ inch, Crosswalk; Pavt Mrkg, Type NR, Paint, 12 inch, Cross Hatching, (color); Pavt Mrkg, Type NR, Paint, __ inch, Stop Bar; Pavt Mrkg, Type NR, Paint, (legend) ; and Pavt Mrkg, Type NR, Paint, (sym bol) include all materials, labor, and equipment necessary to provide and place temporary pavement markings . Removal will be paid for separately under the respective pay items.
b.Removable (Type R), Tape. The unit prices for Pavt Mrkg , Wet Reflective, Type R, Tape, __ inch, Crosswalk; Pavt Mrkg, Wet Reflective, Type R, Tape, 12 inch, Cross Hatching, (color); Pavt Mrkg, Wet Reflective, Type R, Tape, __ inch, Stop Bar; Pavt Mrkg, Wet Reflective, Type R, Tape, (legend); and Pavt Mrkg, Wet Reflective, Type R, Tape, (symbol) include all materials, labor, and equipment necessary to provide, place, remove, and properly dispose of temporary pavement markings.
4.Temporary Raised Pavement Markers. The unit prices for Raised , Pavt Marker, Temp pay items include the cost of providing, installing, maintaining, removing, and disposing of raised pavement markers.
O.Part Width Intersection Construction . The Engineer will measure and the Department will pay for Part Width Intersection Construction by the number of intersections required by the contract . The Engineer will measure intersections as one unit regardless of the number of legs or the number of construction stages. The unit price for Part Width Intersect ion Construction includes the cost of providing additional temporary traffic control measures and operations specified for the work performed in the intersection. The Department will pay separately for earth excavation, temporary traffic control devices, s urfacing materials, and dust palliatives for the construction and maintenance of temporary roadways required for part width intersection construction.
P.Dust Palliative. The Engineer will measure and the Department will pay for Dust Palliative, Applied by we ight of calcium chloride, based on the concentration of solids or solution delivered, as indicated on the delivery report or as determined by testing. The Engineer will not measure additives combined with the gravel before or at the time of gravel surface placement for payment as Dust Palliative, Applied. MDOT Standard Specifications for Construction Section 812 8-122 Q. Culvert, Temporary . The unit price for Culv, Temp includes the cost of constructing and maintaining temporary culverts and removing them before project completion.
R.Portable Traffic Signal (PTS) System . The Department will not make additional payments for traffic regulating, signing, arrow boards, or lighting systems for traffic regulator stations operated at night due to a temporary PTS system failure.
1.Furnish PTS System . The unit price for PTS System, Temp, Furn includes the cost of the following:
a.Providing, installing, programming, and activating temporary PTS systems in the initial required location;
b.Two trailer -mounted, solar -powered PTSs with battery backup;
c.Radio-linked communications with hardwire capabilities and conflict monitoring; and
d.Removing or modifying guardrail to place trailers.
2.Operate PTS System . The unit price for PTS System, Temp, Oper includes the cost of the following:
a.Operating;
b.Inspecting and maintaining;
c.Delineating with conspicuity tape;
d.Relocating, reactivating, and reprogramming;
e.Removing the system from the project;
f.Removing or modifying guardrail; and
g.Replacing guardrail. The Department will pay separately for the cost of delineating each PTS trail er.
S.Lighting for Night Work . The unit price for Ltg for Night Work includes submittal of a work area lighting plan and furnishing, installing, relocating, replacing, and maintaining lighting for the entire project . There will be no adjustments in the lump sum price regardless of the number or type of lighting systems or if standby units are required to complete all night work on the project as described in subsection 812.03.H and as directed by the Engineer. MDOT Standard Specifications for Construction Section 812 8-123 T. Price Adjustments for Authorized Extensions of T ime. The Department will not adjust the unit price for TS, Temp, Furn for authorized extensions of time . The Department will not make price adjustments for temporary traffic control devices , Minor Traf Devices, or Traf Regulator Control during authorized extensions of time if liquidated damages are assessed in accordance with subsection 108. 10. If liquidated damages are not assessed, the Department will adjust unit prices for the following:
1.TS, Temp, Oper ;
2.PTS System, Temp, Oper ;
3.Items design ated as F urnished, Operated, or Standby , unless otherwise specified;
4.Traffic Control Items Paid for as Each or Foot as documented by the Department and maintained on the Department’s Manuals & Guides website;
5.Items measured as lump sum if they are used or required on the worksite during authorized extensions of time except that Minor Traf Devices will not be adjusted when conspicuity tape is the only minor traffic control device in service or required during the authorized extension of time; and
6.Items not in use required by the Engineer as standby . The Department will use F ormula 812-1 to calculate the unit price adjustments . The adjustment for Minor Traf Devices will be at a daily rate of (A/B) not to exceed $900.00 per calendar or work day , and the adjustment for Traf Regulator Control will be at a daily rate of (A/B) not to exceed $650.00 per calendar or work day . When calculating the adjustment, either calendar or working days will be used for both original contract time and additional days . �𝐴𝐴 𝐵𝐵�C = unit price adjustment Formula 812-1 Where: A = Original contract unit price B = Original contract time C = Additional days the item was in use or required to be on standby during the authorized extension of time. The Department will determine the number of additional days the item is on standby or in use in calendar days. MDOT Standard Specifications for Construction Section 812 8-124 For calendar date contracts, the original contract time will be calculated as the number of calendar days from the actual start date to the foll owing order of precedence date as identified within the contract:
a.The latest open to traffic date if removal of all traffic control devices coincides with this date.
b.The latest interim completion date for each season of work if all contract work must be completed in its entirety except turf establishment and watering and cultivating.
c.The original contract completion date. For work day projects , if an authorized extension of time extends into the next construction season, including seasonal suspension pe riods during which a traffic control item is on standby or in use, the original contract time will be the calendar days between the first work day and the expiration of the original contract completion.
U.Temporary Rumble Strips. Temp Rumble Strips (Orange), Stop Condition and Temp Rumble Strips (Orange), Advance of a W ork Zone includes all labor, equipment, and material required to furnish, install, maintain, and remove the rumble strips . Temp Rumble Strips (Orange), Stop Condition and Temp Rumble S trips (Orange), Advance of a W ork Zone includes replacing or re-adhering strips, as directed by the Engineer, and providing traffic control while installing, maintaining, re -adhering, and removing the strips. The Engineer will measure the cumulative length of the individual 4- inch strips, perpendicular to the pavement centerline, to determine the quantity for payment.
V.Delineator, Temporary
1.Delineator, Flexible, Temp, Furn and Delineator, Panels, Temp, Furn will be paid for as specified in subsection 812.04.C . Damaged Delineator, Flexible, Temp, Furn and Delineator, Panels, Temp, Furn will be replaced as directed by the Engineer and replacement will be paid for as detailed in subsection 812.04.A.
2.Delineator, Flexible, Temp, Oper and Delineator, Panels, Temp, Oper will be paid for as specified in subsection 812.04.D.
W.Glare Screen, Temporary. Glare Screen, Temp includes all labor, material , and equipment, including all necessary traffic control devices, required to furnish, install , and maintain the Glare Screen, Temp for the duration that the temporary glare screen is required. MDOT Standard Specifications for Construction Section 812 8-125 The adjustment of Glare Screen, Temp attached to temporary bar rier that is adjusted at locations identified on the plans or in the proposal is included in the pay item Glare Screen, Temp . Payment for replacing damaged glare screen blades as a result of an impact, by other than the Contractor, is included in the pay item Glare Screen, Temp when replacement of the entire section of temporary glare screen is not required. Payment for adjusting Glare Screen, Temp that has been misaligned as a result of an impact, by other than the Contractor, is included in the pay item Glare Screen, Temp . Payment for the removal of Glare Screen, Temp when it is no longer required for an operation is considered to be included in the pay item Glare Screen, Temp . Glare Screen, Temp, Relocated includes all labor, materials , and equipment including all necessary traffic control devices required to relocate and install the Glare Screen, Temp on temporary or permanent barrier located on a different roadbed within the project limits or to other locations identified in the plans or proposal. Glare Screen, Temp, Complete Section, Replaced includes all labor, materials , and equipment including all necessary traffic control devices required to replace complete section(s) of Glare Screen, Temp attached to temporary or permanent barrier , damaged by other than the Contractor . The length of a complete section of Glare Screen, Temp is defined as equal to the length of the temporary glare screen base with flexible blades attached as fabricated by the temporary glare screen manufacturer. Payment will not be made for the gap in the Glare Screen, Temp approaching a required Type B high- intensity light. All costs, including all labor, materials , and equipment and all necessary traffic control devices required to replace, install, maintain, a djust, or realign Glare Screen, Temp and/or the Glare Screen, Temp components that have been damaged, dislodged, or misaligned as a result of the Contractor’s operations must be borne by the Contractor.
X.Traffic Signal (TS), Temporary. The Department will r eimburse the Contractor, based on paid utility company invoices, for the cost to provide secondary service on the project . Reimbursable costs include the cost of installing and removing wood poles, wiring, transformers, and electricity for the signals. A signal system required to maintain one lane of traffic on a bidirectional roadway is considered one location. MDOT Standard Specifications for Construction Section 812 8-126 The unit price for TS, Temp, Furn includes the cost of providing and installing all components required to provide a complete and operating unit, per location shown on the plans. The unit price for TS, Temp, Oper includes the cost of the following for each temporary traffic signal within the project limits:
1.Operating, including signal timing changes directed by the Engineer;
2.Inspecting;
3.Maintaining;
4.Disconnecting;
5.Covering; and
6.Removing the temporary traffic signals.
Y.Tubular Marker. Tubular Marker includes all labor, equipment, and materials to furnish and install posts, bases, mounting hardware, epoxy or adhesive, and retro-reflectorized sheeting at the locations shown on the plans . Tubular Marker also includes removal of the devices.
Z.Tubular Marker, Replacement . Tubular Marker, Replacement includes removing a damaged vertical tube from the base after initial placement and furnishing and installing a new vertical tube. AA. Concrete Barrier -Mounted Temporary Sign System . All prismatic signs used in conjunction with this device will be paid for separately with other pay items.
1.Conc Barrier- Mtd Temp Sign System , Furn includes all labor, equipment, and materials to furnish and install posts, bases, and mounting h ardware at the locations shown on the plans and replacement of sign systems damaged by vehicular traffic other than the Contractor’s vehicles and equipment . It includes all costs and traffic cont rol required to replace a damaged temporary barrier -mounted sign system as directed by the Engineer.
2.Conc Barrier- Mtd Temp Sign System , Oper includes all costs for cleaning and relocating as necessary the sign system throughout the life of the contract, as well as all costs associated with the repair of barrier sections necessitated by use of this system. BB. Reflective Panel for Temporary Sign Support
1.Reflective Panel for Temp Sign Support, Furn will be measured by each reflective strip attached to a sign supp ort in accordance to the guidelines above. Subsection 812.04.C will be used to determine how the item will be paid. Payment includes all labor, materials, and MDOT Standard Specifications for Construction Section 812 8-127 equipment requir ed to fabricate, furnish, and install the reflective panel to the sign support as depicted on the plans or as directed by the Engineer . Signs that straddle the median concrete barrier will have two sign supports paid for on each sign.
2.Reflective Panel for Temp Sign Support, Oper will be measured by each reflective strip attached to a s ign support in accordance to the guidelines above. Subsection 812.04.D will be used to determine how the item will be paid . Signs that straddle the median concrete barrier will have two sign supports paid for on each sign.
Source: Michigan Standard Specifications for Construction, 2020 Edition. Pages 637–688 of 1,146.