for Highway Construction Page 529 of 71 5 SECTION 626 – TEMPORARY TRAFFIC CONTROL
626.01 Description.
Provide, install, maintain, remove, and relocate temporary traffic control devices .
626.02 Materials.
Provide material as specified in: Guardrail and Concrete Barrier ..................................................................................................... 612 Crash Cushions ............................................................................................................................ 613 Signs and Sign Supports .............................................................................................................. 616 Pavement Markings ...................................................................................................................... 630 Retroreflective S heeting .......................................................................................................... 712.02 Provide temporary traffic control devices in acceptable condition as defined in American Traffic Safety Services Association’s (ATSSA) Quality Guidelines for Temporary Traffic Control Devices and Features.
A.Temporary Traffic Control Signs. Provide temporary traffic control signs meeting 616.
B.Channelizing Devices. Provide weighted base tubular markers , surface -mounted tubular markers, vertical panels, drums, barricades, or other channelizing devices. Provide weighted base or surface- mounted tubular markers that a re at least 36 inches high and have at least 3 inches width when facing traffic. Provide barricades that have the following minimum lengths:
1.Type 1: 2 feet.
2.Type 2: 2 feet.
3.Type 3: 7 feet.
C.Temporary Pavement Markings. Provide temporary pavement marking tape, temporary waterborne pavement marking paint, or temporary raised pavement markers.
1.Temporary Pavement Marking Tape. Provide retroreflective or non- retroreflective pavement marking t ape.
a.Retroreflective Pavement Marking Tape. Use white or yellow retroreflective pavement marking tape in accordance with ASTM D4592 Type I. When used for broken- line pavement markings, use 2- foot long line segments or as otherwise shown.
b.Non-Retroreflective Pavement Marking Tape. Use black or gray non- retroreflective tape to cover conflicting pavement markings in accordance with ASTM D4592 Type I, except without retroreflective elements. for Highway Construction Page 530 of 715 2. Temporary Waterborne Pavement Marking Paint . Use white or yellow waterborne pavement marking paint as specified in 630.
3.Temporary Raised Pavement Markers. Provide white or yellow 2- sided temporary flexible raised pavement markers when used on undivided highways. Provide white or yellow reflectorized rigid raised pavement markers for temporary applicati ons. Provide 2- side markers when used on undivided highways. Install in accordance with the manufacturer’s written installation instructions. Ensure that markers are removable without the use of heat, grinding, or blasting.
D.Floodlights . Provide floodlights capable of illuminating flagger stations, work areas, and equipment crossings with at least 5 foot -candl es or greater. Ensure floodlights are equipped with a meter that records hours of operation.
E.Arrow Boards. Provide arrow boar ds with a meter that records hours of operation.
F.Portable Changeable Message Signs (PCMS). Provide PCMS with message sign, control system, power source, and mounting and transporting equipment components. Provide PCMS equipped with a meter that records hours of operation.
G.Temporary Traffic Control Signal . Provide portable temporary traffic cont rol signals in accordance with NEMP TS -5 Type TR1. Provide portable temporary traf fic control signals with a meter that records hours of operation.
H.Temporary Concrete Barrier . Provide temporary concrete barrier meeting 612.
I.Temporary Crash Cushion. Provide temporary crash cushions meeting 613. Provide test -level 2 or 3 temporary crash cushions when the highway posted speed is less than 45 mph. Provide test -level 3 temporar y crash cushions when the highway posted speed is greater than or equal to 45 mph.
J.Shadow V ehicle and Truck Mounted Attenuator (TMA) or Tr ailer Attenuator. Provide a shadow vehicle and TMA or shadow vehicle with trailer attenuator in accordance with th e manufacturer’s written instructions. Provide test -level 2 or 3 TMAs or trailer attenuators when the highway posted speed is less than 45 m ph. Provide test -level 3 TMAs or trailer attenuators when the highway posted speed is greater than or equal to 45 mph.
K.Temporary Pedestrian Facilities. Provide temporary pedestrian facilities.
1.Pedestrian Channelizing Devices. Provide pedestrian channelizing devices that are crashworthy, detectable to long cane users, visible to pedestrians with vision disabilities , and have continuous bottom and top surfaces. Provide a smooth and continuous hand- trailing e dge between 32 and 38 inches above the walkway. Provide a continuous detection plate between 2 and 8 inches above the walkway. Ensure the hand- trailing edge and detection plate are in the same vertical plane. On the pedestrian side of pedestrian channeliz ing devices or when not exposed to traffic, provide for Highway Construction Page 531 of 715 retroreflective or non- retroreflective sheeting in a contrasting pattern of alternating light and dark colors on the hand- trailing edge, positioned vertically or at a 45 degree angle, and consisting of a minimum of 6 inches of sheeting or other contrasting materials. When exposed to vehicular traffic, provide retroreflective sheeting on the hand- trailing edge and bottom detection plate
2.Temporary Curb Ramps. Provide temporary curb ramps meeting ADA requirements.
L.Radar Speed Fe edback Trailers. Provide radar speed feedback trailers capable of showing a Speed Limit sign above a Vehicle Speed Feedback plaque and capable of automatically dim light output to 50 percent in l ow light conditions. Provide the Vehicle Speed Feedback plaque with the legend YOUR SPEED in black text on an orange or yellow retroreflective background and a changeable legend displaying the speed of the approaching vehicle with two digits in orange or y ellow luminous text on a black opaque background. Disable flashing, color changing, strobe lights, word messages, or other dynamic elements if the device is equipped with these features. Ensure the changeable display is dark when no vehicles are approaching and that the changeable display goes dark when the speed of an approaching vehicle exceeds the speed limit by more than 10 mph. Ensure the Speed Limit and Vehicle Speed Feedback signs are the same size and that the bottom of the signs are at least 7 feet above the pavement .
M.Temporary Rumble Strips. Provide temporary portable rumble strips that are black, orange, or white, require no adhesives or anchors for installation, weigh at least 100 pounds, have a profile no greater than ¾ inc h tall, are at least 10 inches wide, and that c an be used on highways with speeds up to 80 mph.
N.Flagger Equipment. Provide flaggers and flagger equipm ent.
1.Provide flaggers with high- visibility safety apparel and a STOP/SLOW paddle.
2.Provide Automated Flagger Assistance Devices (AFAD).
O.Pilot Car. Provide a vehicle with a PILOT CAR FOLLOW ME sign mounted on the rear of the pilot vehicle. S how the company name of the pilot car contractor on each side of the vehicle.
626.03 Construction Requi rements.
Perform temporary traffic control wor k as follows:
A.General. Identify a project traffic control supervisor (TCS) certified by ATSSA or Evergreen Safety Council to direct the installation, modification, and maintenance of temporary traffic cont rol devices . Provide contact information for the TCS. Provide a schedule and contact information for personnel working under the direction of the TCS that can be contacted and will respond 24 hours per day during t he duration of the temporary traffic control operations to provide temporary traffic control maintenance. Under the direction of the TCS, install temporary traffic control devices before changing traffic patterns. Do not use devices for purposes other than those for which they are intended. Cover or remove temporary traffic contr ol devices when not applicable. for Highway Construction Page 532 of 71 5 Keep temporary traffic control zones as short as practical. Restore normal traffic operations to the extent practical during non- working hours and during planned or unplanned work stoppages. As specified in
105.14 D, ensure individual traffic delays do not exceed 15 minutes and traffic delays do not exceed a total
of 30 minutes through the length of the project site, unless otherwise approved in writing. Implement remedial action to eliminate the excess traffic delays. Monitor and maintain the temporary traffic control plan and devices during the duration of the temporary traffic control operations. Repair or replace devices that are marginal or unacceptable as defined in the ATSSA guidelines referenced in 626.02. Ensure temporary traffic control devices remain in place and serviceable when in the travel way. At least once per week, ensure temporary traffic control devices function well during non- daylight hours. Obtain approval before removing temporary traffic control devices.
B.Temporary Traffic Control Maintenance . Monitor and maintain the temporary traffic control plan and devices during the duration of the temporary traffic control operat ions. Temporary traffic control maintenance includes repairing, replacing, and cleaning temporary traffic control devices, restoring displaced devices, removing and resetting dev ices (excluding temporary concrete barrier ) for different phases, and inspecting the temporary traffic control. Initial setup and final removal of temporary traffic control is incidental and included in the contract price for the temporary traffic control devices . Coordinate temporary traffic control maintenance operations before performing the work.
C.Temporary Traffic Control Signs. Ensure signs remaining in place for more than 3 calendar days are installed on breakaway sign post(s). Install sign posts, as specified in 616, at the following heights:
1.5 feet from the bottom of the sign to the elevat ion of the near edge of the pavement in rural areas.
2.7 feet from the bottom of the sign to the top of the curb where parking or pedestrian movements are likely to occur.
3.Secondary signs mounted below another sign may be 1 foot less than the heights describe above. Provide additional temporary traffic control signs if traffic queues extend upstream of the first temporary traffic control device. Remove or cover the signs when no longer needed.
D.Channelizing Devices. Provide weighted bas es when necessary to ensure channelizing devices remain in pl ace. Attach surface- mounted tubular markers with an adhesive in accordance with the manufacturer’s writt en installation instructions. Do not nail or bolt tubular markers to the pavement .
E.Temporary Pavement Markings. Install temporary markings as soon as practical. For temporary pavement markings, omit th e test strip when waterborne paint is used. Use temporary flexible raised pavement markers or temporary rigid raised pavement markers to supplement or as a substitution for other pavement markings. Use 2 raised pavement markers placed side by side with a 3 inch gap between markers to mark double lines. Use 2 raised pavement markers placed side by side to mark wide lines. The Engineer may require additional markers placed at a reduced spacing. Ensure pavement markings are visible in the day and night. Repair damaged markings. for Highway Construction Page 533 of 715 Remove surface- mounted tubular markers , temporary pavement marking tape, temporary raised pavement markers, and rigid raised pavement markers without damaging pavement surface.
F.Floodlights. Illuminate fl agger stations, work areas, and equipment crossings with floodlights when nighttime work is being performed. Provide lighting 30 minutes before sunset and up to 30 minutes after sunrise when workers or operati onal equipment are present. Ensure floodlightin g does not produce a glare condition for approaching road users, f laggers, or workers. When floodlights are used, provide an extra floodlight onsite for backup. When a flagger station or work area is moved, us e the backup floodlight to illuminate the new s tation.
G.Arrow Boards. Secure the arrow board control system wi th a lock and change the default control system password to prevent tampering.
H.Portable Changeable Message Signs (PCMS). Secure the PCMS control systems with a lock and change the defaul t control system password to prevent tampering.
I.Temporary Traff ic Control Signal . Obtain timing plan approval before temporary traffic control signal operations. Secure the temporary traffic control signal control systems with a lock and change the default control system password to prevent tampering.
J.Temporary Concrete Barriers. When necessary for construction phasing, remove, store, and res et temporary concrete barrier . Store the removed barrier outside the highway clear zone. Replace damaged sections of temporary concrete barrier. Provide temporary traffic control until the temporary concrete barrier is reset. Co ordinate removing and resetting temporary concrete barrier before performing the work.
K.Temporary Crash Cushions. When necessary for construction phasing, remove, store, and reset temporary crash cushion in accordance with the manufacturer’s installation instruc tions. Store removed crash cushions outside the highway clear zone. Replace damaged crash cushions. Provide temporary traffic control until the temporary crash cushion is reset.
L.Shadow Vehicles and TMAs or Trailer Attenuator. Use a shadow vehi cle with TMA or trailer attenuator to provide positive protection between the work space and highway users. Do not use the shadow vehicle to transport material or to perform work tasks. Replace TMAs and trailer attenuators when damaged. Coordinate shadow v ehicle an d TMA or trailer attenuator use before deployment.
M.Temporary Pedestrian Facilities. Use pedestrian channelizing devices to close sidewalks and to delineate alternate routes when work activities impact pedestrian facilities to ensure accessibil ity featu res consistent with the features of the preconstruction for Highway Construction Page 534 of 71 5 pedestrian facility. When sidewalks are closed, ensure that pedestrian channelizing devices cover the entire width of the sidewalk . Use temporary curb ramps wh en work activities impact accessibility features. Ensure the temporary curb ramps are consistent with the features of the preconstruction pedestrian facilities.
N.Radar Speed Feedback Trailers. When used, pl ace the radar speed feedback trailer near the w ork space. When used, program the Vehicle Speed Feedback plaque to turn off the changeable display when the speed of an approaching vehicle exceeds the speed limit by more than 10 mph. Coordinate temporary traffic control maintenance operations before performing the work.
O.Temporary Rumble Strips. Use temporary rumble strips in accordance with the manufacturer’s written instructions to attract the attention of highway user s to temporary traffic control zone features.
P.Flagger Control. Perform flagger control with certified flaggers. Certified flaggers have completed a flagger training course from a Department -approved source and carry a current certificate of training. Certifications issued by other state Departments of Transportation that have a reciprocity agreement with the Department and foundations will be accepted. When specified, AFADs are used to provide separation between highway users and the flagger. AFADs must be controlled by cert ified fla ggers. Coordinate flagging operations, including AFAD use, before performing the work.
Q.Pilot Car. Coordinate pilot car operations before performing the work.
626.04 Method of Measurement.
The Engineer wil l measure acceptably completed work as follows:
1.Temporary traffic control signs will be by the square foot of sign.
2.Weighted based tubular markers , surface -mounted tubular markers, vertical panels, drums, and barricades will be per each.
3.Temporary pavement marking tape and temporary pavement marking waterborne paint will be by the foot and will include removal when applicable.
4.Temporary flexible raised pavement markers an d temporary rigid raised pavement markers will be per each.
5.Floodlights will be by the hour or day.
6.Arrow boards will be by the hour or day.
7.Portable changeable message signs will be by the hour or day.
8.Temporary traffic control signal will be by the hour or day.
9.Temporary concrete barrier and removing and resetting temporary concrete barrier will be by the foot.
10.Temporary crash cushions and removing and resetting temporary crash cushions will be per each. for Highway Construction Page 535 of 71 5 11. Shadow vehicles with TMAs or trailer attenuators and replacement of damaged TMAs or trailer attenuators will be per each.
12.Pedestrian channelizing devices will be by the foot. Temporary curb ramps will be per each.
13.Radar speed feedback trailers will be by the hour or day.
14.Temporary rumble strips will be per each temporary rumble strip array.
15.Miscellaneous traffic control items will be measured and paid by force account as specified in
109.03 C.5.
16.Temporary traffic control maintenance will be by the hour.
17.Flagger control will be by the hour and is limited to the number of hours flagging stations are staffed. A separate payment for each AFAD used will be by the number of hours operated by a flagger.
18.Pilot car op eration will be by the hour. Maintain a daily record of hours for temporary traffic control maintenance, and other items measured by the hour. Provide the records weekly for approval of hours recorded. Provide a weekly r eport of each non- daylight hour temporary traffic control inspection to include temporary traffic control activities, the time the temporary traffic control was reviewed, any actions taken, and any other pertinent information. If allowed by the Engineer, no additional payment will be made for temporary traffic control plan changes, flagging, and pilot car operations for the Contractor’s sole convenience.
626.05 Basis of Paymen t.
The Department will pay for accepted quantities at the contract unit prices as follows: Pay Item Pay Unit Arrow Board, Type__ .............................................................................. Hour or Day Automated Flagger Assistance Device (AFAD) ...................................... Hour Barricade, Type__ .................................................................................. Each Drums ..................................................................................................... Each Flagger Control ....................................................................................... Hour Floodlights .............................................................................................. Hour or Day Miscellaneous Temporary Traffic Control Items ..................................... CA Pedestrian Channelizing Devices ........................................................... FT Pilot Car .................................................................................................. Hour Portable Changeable Message Sign (PCMS) ......................................... Hour or Day Radar Speed Feedback Trailer ............................................................... Hour or Day Remove and Reset Temporary Concrete Barrier .................................... FT Remove and Reset Temporary Crash Cushion ...................................... Each Shadow Vehicle and TMA or Trailer Attenuator ...................................... Each for Highway Construction Page 536 of 715 Surface- Mounted Tubular Markers ......................................................... Each Temporary Concrete Barrier ................................................................... FT Temporary Crash Cushion ...................................................................... Each Temporary Curb Ramp ........................................................................... Each Temporary Flexible Raised Pavement Markers ...................................... Each Temporary Pavement Marking – Waterborne ......................................... FT Temporary Pavement Markin g Tape ...................................................... FT Temporary Rigid Raised Pavement Markers .......................................... Each Temporary Rumble Strips ....................................................................... Each Temporary Traffi c Control Maintenance ................................................. Hour Temporary Traffic Control Signal ............................................................ Hour or Day Temporary Traffi c Control Signs ............................................................. SF Vertical Panels ........................................................................................ Each Weighted Base Tubular Markers ............................................................ Each Initial setup and final removal of temporary traffic control is incidental and included in the contract price for the temporary traffic control devices . Lights and flags on signs and sign posts are incidental and included in the contract price for temporary traffic control signs. for Highway Construction Page 537 of 71 5 SECTION 627 – PAINTING
627.01 Description.
Prepare surfaces and apply paint to specified surfaces. Provide protective devices to prevent damage to the work, facilities, or traffic. Dispose of waste.
627.02 Materials.
Provide materials as specified in 707 for selected paint systems. Use the following structural steel paint systems:
1.System A: application to newly fabricated girders and bearings.
2.System B: application to newly fabricated railing, immersion service (2 coats of epoxy below waterline and one coat of urethane above the waterline), and repair of System A.
3.System C and D: spot, zone, or encapsulation of existing paint, including lead based paint.
4.System E: selected immersion service based on water quality conditions. Each system for stru ctural steel paint is described in Table 627.02- 1. Table 627.02-1 – System Descriptio ns System Application Layer - Formula Composition Dry Film Thickness A Shop only Primer - 1 Intermediate - 5 Top Coat - 8 Inorganic Zinc Epoxy Polyurethane 3 - 5 mils 4 - 6 mils 2 - 4 mils B Shop or Field Primer - 2 Intermediate - 5 Top Coat - 8 Organic Zinc Epoxy Polyurethane 3 - 5 mils 4 - 6 mils 2 - 4 mils C Shop or Field Primer - 3 Intermediate - 6 Top Coat - 9 Moisture Cured Urethanes Moisture Cured Urethanes Moisture Cured Urethanes 3 - 5 mils 3 - 5 mils 3 - 5 mils D Shop or Field Primer - 3 Intermediate - 6 Top Coat - 8 Moisture Cured Urethanes Moisture Cured Urethanes Polyurethane 3 - 5 mils 3 - 5 mils 3 - 5 mils E Shop or Field Primer - 4 Intermediate - 5 Top Coat - 8 Epoxy Epoxy Polyurethane 4 - 6 mils 4 - 6 mils 3 - 5 mils
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 565–572 of 768.