Section 635 — Temporary Traffic Control

Description

635.01This work consists of providing, installing, maintaining, relocating, and removing temporary traffic control devices and services as ordered for the control and protection of public traffic through the project. Advance warning arrow board, barricade, and warning light types are designated in the MUTCD.

Material

635.02Conform to the MUTCD and the following Section and Subsections: Emulsified aspha lt 702.02 Temporary plastic fence 710.08 Traffic signing and marking material 718

Construction Requirements

635.03Qualifications. At least 30 days before starting work, submit the following for approval:

(a)Flaggers. Appropriate certifications from ATSSA, the National Safety Council, a state department of transportation, or other approved organization; (b)Pilot car operators. Appropriate certifications ; and (c)TCS. Certifications according to Subsection 156.02.

635.04General. Provide, install, and maintain temporary traffic control devices adjacent to and within the project according to the MUTCD, temporary traffic control plan, and Section 156. Install and maintain traffic control devices as fo llows: (a)Provide and install temporary traffic control devices before the start of construction operations. (b)Install only those temporary traffic control devices needed for each stage or phase. (c)Relocate temporary traffic control devices as necessary. (d)Immediately replace devices that are lost, stolen, destroyed, or inoperative. (e)Provide and maintain temporary traffic control devices that meet the acceptable standard described in ATSSA, Quality Guidelines for Work Zone Traffic Control Devices. Modify the ATSSA st andards as follows: (1)Repair or remove and replace marginal devices within 48 hours. (2)Repair or remove and replace unacceptable devices immediately. (f)Remove temporary traffic control devices upon contract completion or when approved. 764 Secti on 635

(g)Provide crashworthy temporary traffic control devices.

635.05Barricades. Use barricades of the type and size specified.

635.06Cones and Tubular Markers. Use cones or tubular markers of the height specified.

635.07Constructio n Signs. Install posts according to Subsection 633.04 . Portable sign supports may be used instead of sign posts if approved. Submit ballasting for approval. Do not install sign supports on sidewalks, bicycle facilities, or areas designated for pedestrian or bicycle traffic. Remove or completely cover unnecessary signs. Use crashworthy posts within the traversable area adjacent to traffic.

635.08Drums. U se plastic drums that are at least 36 inches high and at least 18 inches in diameter.

635.09Traffic Control Supervisor. Perform services described in Subsection 156.08.

635.10Flaggers. Use certified flaggers according to Subsection 635.03. Do not use flags alone.

635.11Pilot Cars. Use certified pilot car operators according to Subsection 635.03. Mount a high-i ntensity, rotating, flashing, or oscillating light on the roof of the pilot car.

635.12Portable Traffic Barriers. Use temporary barriers that are crashworthy. Lifting holes no larger than 4 inches or lifting loops are allowed. Mount white or yellow retroreflectors, as applicable, to the top or side of the barrier on 25 -foot centers. Mount the retroreflectors at a uniform height at least 24 inches above the road surface. Flexible barrier delineators or barrier delineation tape may be used instead of retroreflectors if approved.

635.13Temporary Guardrail. Construct temporary guardrail according to Section 617.

Mount w

hite or yellow retroreflectors, as applicable, to the top or side of the guardrail on 25-f oot centers.

Mount

the retroreflectors at a uniform height at least 24 inches above the road surface.

635.14Temporary Pavement Markings and Delineation. Before opening a pavement surface to traffic, remove conflicting pavement markings. Make the removal pattern uneven to not perpetuate the outline of the removed pavement markings. Lightly coat removal areas on asphalt surfaces with emulsified asphalt. Place and maintain temporary pavement markings that are neat, crack free, true, straight, and unbroken. If temporary signs and pavement markers are substituted for temporary pavement markings, install temporary signs and pavement markers as shown in the plans.

For

temporary pa vement markings, u se the fo llo wing: (a)Preformed retroreflective tape. Apply according to the manufactur er’s recommendations. Remove loose preformed retroreflective tape before placing additional pavement lifts. (b)Pavement markers. Do not use pavement markers during seasonal suspensions. If chip seals, slurry seals, or tack coats are used after marker placemen t, protect the markers with an approved 765 protective cover, and remove it after the asphalt material is sprayed. Install according to the manufacturer’s recommendations. (c)Traffic paint. Do not apply traffic paint to the final surface. Apply traffic paint as the temporary pavement marking if no work will be performed on the project for at least 30 days. Apply waterborne traffic paint according to Section 634. Remove temporary pavement markings before placing additional pavement lifts or permanent pavement markings unless approved. Remove temporary markers after 14 da ys and apply permanent pavement markings unless approved.

635.15Warning Lights. Use warning lights of the types shown in the plans or according to the MUTCD. Install warning lights with a minimum mounting height of 30 inches to the bottom of the lens. Secure lights to the top of the traffic control device they are supplementing. Use batteries re commended by the light manufacturer. Mount large batteries below windshield height and preferably on the ground. Replace batteries when they no longer provide satisfactory performance. Use Type C steady- burn warning lights for delineation on barricades or drums. Use Type A low -intensity flashing warning lights on the first 2 barricades or drums in the merging or shifting taper series. Use Type B high-intensity flashing warning lights on the first two advance warning signs.

635.16Shadow Vehicle. Use a 19,800± 990 pound shadow vehicle equipped with a tr uck-mounted attenuator attache d to the rear of the vehicle, an exterior flashing yellow dome light, and an arrow board. Use the shadow vehicle to provide physical protecti on to workers from traffic appr oachi ng from the rear during moving operations. If using a shadow vehicle, subm it a plan for using a shadow vehicle and associated lan e closure s to traf fic.

635.17Pavement Patch. U se an approved hot asphalt mix or commercially available cold asphalt mix to repai r potholes and rough spots in the traveled way before reopening travel lanes to traffic. If cold asphalt mix is used, remove and replace with approved hot asphalt mix before placing succeeding hot asphalt lifts.

635.18Crash Cushions. Use a crashworthy te mporary c rash c ushion according to the manufacturer’s recommendations.

635.19Traffic Signal System. Provide the names and telephone n umbers of at least two emergency contacts who can be reached 24 hours a day, and who are available to arrive on site within 4 hours of notification to repair or replace malfunctioning temporary signal equipment. In addition, provide emergency flaggers who can be reached 24 hours a day, and who are available to perf orm traffic control operations within the timeframes specified below until the temporary signal system is operable. If the traffic signal malfunctions during construction operations, immediately start traffic control operations using flaggers until the system is returned to normal signal operation. Complete traffic signal repairs within 6 hours of the malfunction. If the traffic signal malfunctions during a period when no construction activity is taking place, start traffic control operations using flaggers as soon as possible, but no later than 2 hours after the initial notification. 766 Secti on 635 Continue temporary flagging operations until the system is returne d to normal signal operation. Complete traffic signal repairs within 12 hours of notification.

635.20Tempor ary P lastic Fence. Use temporary plastic fence according to Section 619.

635.21Portable Rumble Strip. Before placing portable rumble strips, clean the roadway free of dust, sand, and other materials that may cause slippage. Use portable rumble strips that can be installed without adhesives or bolts and have a minimum weight of 105 pounds, and a non-slip textured surf ace on the rumble strip face.

635.22Steel Plates. Use 1-i nch or thicker steel plates that can safely carry traffic. Secure the plates to the pavement to prevent movement.

635.23Advance Warning Arrow Board. Conform to the MUTCD.

635.24Portable Changeable Message Sign. Ensure that the portable changeable message sign (PCMS) display panel is raised to a fully upright position and is fully visible to motorists. Reduce the intensity of the lights when using PCMS at night. Use approved messages. Limit messages to two phases unless approved. Use a display time for each phase between 2 and 3 s econds.

635.25Acceptance. Material for temporary traffic control devices will be evaluated u nder Subsections 106.02 and 106.03 . Vehicles for pilot cars and shadow vehicles will be evaluated under Subsections 106.02 and 106.04.

Placement of temporary

traffic control devices will be evaluated under Subsections 106.02 and 106.04.

Temporary t

raffic control services will be evaluated under Subsection 106.02. Temporary guardrail will be evaluated under Section 617.

Temporary plastic

fence will be evaluated under Section 619. Waterborne traffic paint will be evaluated under Section 634.

Measurement

635.26Measure the Section 635 pay items listed in th e b id schedule according to Subsection 109.02 and the fo llowing as applicable:

When measuring temporary traffic

control pay items, measure only one time even if relocated or replaced. When measuring barricades by the linear foot, measure barricades by the width.

When measuring construction signs

by the square foot, measure front face sign panel. Do not measure posts and temporary supports. 767 When measuring moving portable traffic barriers, do not measure movement of portable traffic barriers for work access or the convenience of the Contractor. When measuring temporary pavement markings by the linear foot or mile, measure along the centerline of the roadway. Measure temporary pavement markings as a single measurement, inclusive of all marking s, from end to end regardless of color, material type, or number of lines. Do not deduct for standard gaps between stripes. When measuring temporary pavement markings by the square foot, measure the number of square feet of symbols or letter markings based on the marking area shown in the plans or, if not shown, the area of each marking measured in place to the nearest square foot. Measure temporary pavement markers used at the option of the Contractor instead of temporary pavement markings as equivalent temporary pavement markings and not as temporary pavement markers. When measuring pavement marking removal, measure the actual line removed. Do not measure gaps. When measuring moving crash cushion by the each, do not measure movement of crash cushion for work access or the convenience of the Contractor. When measuring replacement barrels or cartridges for crash cushions by the each, measure barrels or cartridges damaged by public traffic. Measure flaggers for each hour a person is performing the work. Do not measure time required to set up and take down required signage. Do not measure flagging performed by the Traffic Control Supervisor. Do not measure flaggers used in place of a malfunctioning or inoperable temporary signal system.

Payment

635.27The accep ted quantities will be paid at the contract price per unit of measurement for the Section 635 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05 . (a)Progress payments for temporary traffic control devices and markings will be paid as follows: (1)50 percent of the pay item amount will be paid after installation. (2)An additional 25 percent of the pay item amount will be paid after 50 percent of the total work is completed in the contract.(3)The remaining portion of the pay item amount will be paid after the temporary traffic control devices and markings are removed from the project. (b)Progress payments for temporar y traffic control by the lump sum will be paid as follows: (1)25 percent of the pay item amount will be paid after initial construction signs are in place and needed devices onsite for use.

(2)An additional 65 percent of the pay item amount will be prorated based on total work completed in the contract.

(3)The remaining portion of the pay item amount will be paid after the construction signs and devices are no longer needed and have been removed from the project.

(c)Progress payments for pay items paid for by the hour, or day, will be paid at 100 percent of the pay item amount.