2024 Specif ications 502
Article 1 — Description
Provide, install, move, replace, maintain, clean, and remove all t raffic control devices shown on the plans and as directed. Temporary work zone (TWZ) traffic control devices manufactured after December 31, 2019, must have been successfully tested to the crashworthiness requirements of the 2016 edition of the AASHTO Manual for Assessing Safety Hardware (MASH). An exception to the manufacture date applies when, based on the project’s date of letting, a category of MASH -2016 compliant TWZ traffic control devices was not approved, or was not self -certified. In such case, devices that meet NCHRP -350 or MASH -2009 may be used. Temporary work zone ( TWZ ) traffic control devices manufactured on or before December 31, 2019, must at a minimum have been successfully tested to the crashworthiness requirements of NCHRP -350 or MASH -2009. These devices may continue to be used throughout their normal service lives . Such TWZ traffic control devices include: portable sign supports, barricades, portable traffic barriers designated exclusively for use in TWZs, crash cushions designated exclusively for use in TWZs, longitudinal channelizers, and truck- mounted attenuators (TMAs) and trailer attenuators (TAs). Category I devices (i.e., lightweight devices), such as cones, tubular markers, and drums without lights or signs attached, may be self -certified by the vendor or provider, with documentation provided to the Department, or as shown on Department’s Compliant Work Zone Traffic Control Device List.
Article 2 — Construction
Comply with the requirements of Article 7.2., “Safety.” Implement the traffic control plan (TCP) shown on the plans . Install traffic control devices straight and plumb. Make changes to the TCP only as approved. Minor adjustments to meet field conditions are allowed. Submit Contractor -proposed TCP changes, signed and sealed by a licensed professional engineer, for approval. The Engineer may develop, sign, and seal Contractor -proposed changes . Changes must conform to guidelines established in the TMUTCD using approved products from the Department’s Compliant Work Zone Traffic Control Device List . Maintain traffic control devices by taking corrective action when notified. Corrective actions include, but are not limited to, cleaning, replacing, straightening, covering, and removing devices. Maintain the devices such that they are properly positioned and spaced, are legible, and have retroreflective characteristics that meet requirements day or night and in all weather conditions. 2024 Specif ications 502 772 The Engineer may authorize or direct in writing the removal or relocation of project limit advance warning signs. When project limit advance warning signs are removed before final acceptance, provide traffic control in accordance with the TMUTCD for minor operations as approved. Remove all traffic control devices upon completion of the work as shown on the plans or as directed.
Article 3 — Measurement
“Barricades, Signs, and Traffic Handling” will be m easured by the month. Law enforcement personnel with patrol vehicles will be measured by the hour for each person.
Article 4 — Payment
4.1 Barricades, Signs, and Traffic Handling . Except for Contracts with callout work and work orders, the work
performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Barricades, Signs, and Traffic Handling.” This price is full compensation for installation, maintenance, adjustments, replacements, removal, materials, equipment, labor, tools, and incidentals. When the plans establish pay items for particular work in the TCP, that work will be measured and paid for under pertinent Items. TMAs and TAs will be paid for under Item 505, “Truck -Mounted Attenuator (TMA) and Trailer Attenuator (TA).” Portable changeable message signs will be paid for under Item 503, “Portable Changeable Message Sign.” Portable traffic signals will be paid for under Item 510, “One- Way Traffic Control,” unless otherwise shown on the plans. In accordance with Section 7.2.3., “Safety Contingency,” funds have been included in the project budget to improv e the effectiveness of traffic handling and enhanc e safety during the course of this project.
4.1.1 Initiation of Payment . Payment for this Item will begin on the first estimate after barricades, signs, and
traffic handling devices have been installed in accordance with the TCP.
4.1.2 Paid Months . Monthly payment will be made each succeeding month for this Item provided the barricades,
signs, a nd traffic handling devices have been installed and maintained in accordance with the TCP until the Contract amount has been paid. If, within the timeframe established by the Engineer, the Contractor fails to provide or properly maintain signs and barricades in compliance with the Contract requirements, as determined by the Engineer, the Contractor will be considered in noncompliance with this Item. No payment will be made for the months in question, and the total final payment quantity will be reduced by the number of months the Contractor was in noncompliance.
4.1.3 Maximum Total Payment Before Acceptance. The total payment for this Item will not exceed 10% of the total Contract amount before final acceptance in accordance with Article 5.12., “Final Acceptance.” The
remaining balance will be paid in accordance with Section 502.4.1. 5., “Balance Due.”
4.1.4 Total Payment Quantity. The quantity paid under this Item will not exceed the total quantity shown on the plans , except as modified by change order and as adj usted in accordance with Section 502.4.1 .2., “Paid
Months.” An overrun of the plans quantity for this Item will not be allowed for approving designs; testing; material shortages; closed construction seasons; curing periods; establishment, performance, test , and maintenance periods; failure to complete the work in the number of months allotted; or delays caused directly or indirectly by Contract requirements. 2024 Specif ications 502 773 4.1.5. Balance Due. The remaining unpaid months of barricades less non -compliance months will be paid on final acceptance of the project, if all work is complete and accepted in accordance with Article 5.12., “Final Acceptance.”
4.1.6 Contracts with Callout Work and Work Orders . The work performed and materials furnished in
accordance with this Item and measured as provided under “Measurement” will be subsidiary to pertinent Items, except for federally funded Contracts.
4.2 Law Enforcement Personnel . The work performed and materials furnished in accordance with this Item and
measured as provided under “Measurement” will be paid by Contractor force account for “Law Enforcement Personnel.” This price is full compensation for furnishing all labor, materials, supplies, equipment, patrol vehicles, fees, and incidentals necessary to complete the work as directed.