11-6 1105 -4 Maintenance and Inspection
Submit a proposed traffic control device maintenance schedule and checklist for approval before construction. Perform continuous maintenance and daily scheduled inspections of temporary traffic control devices . Review and maintain all traffic handling measures to ensure that adequate provisions are in place for public and workers’ safety. Maintenance activities include cleaning , repair , or replacement , and prompt dis posal of temporary traffic control devices that are damaged , torn, crushed, discolored, displaced or deteriorated beyond effectiveness. Replace work zone traffic control devices deemed unacceptable according to the guidelines set forth in the American Tra ffic Safety Service Association’s (ATSSA) Quality Guidelines for Work Zone Traffic Control Devices. If the name and telephone number of the agency, Contractor or supplier is shown on the non-retroreflective surface of all channelizing devices , use letter s and numbers that are non-reflective and not over 2 inches in height. 1105 -5 FAILURE TO MAINTAIN TRAFFIC CONTROL Failure to maintain acceptable traffic control measures or temporary traffic control devices may result in formal notification of noncompliance. Implement remedial action immediately for imminent danger situations as directed by the Engineer . Implement remedial action within 48 hours after notification of a safe ty issue that is not an imminent danger. See Articles 107 - 21 and 108 -7. Failure to comply may result in having the work performed with available forces and equipment. In cases of willful disregard for the safety of the public, the Engineer may proceed im mediately to implement the measures necessary to provide the appropriate level of traffic control to ensure that the safety of all concerned parties is maintained. 1105 -6 MEASU REMENT AND PAYMENT Payment at the contract unit prices for the various items in the contract will be full compensation for all work covered by th is specification. If the Contractor fails to maintain acceptable traffic control measures or temporary traffic control devices and the Engineer implements measures necessary to provide the appropriate level of traffic control, the actual cost of performing said work will be deducted from the monies due the Contractor on the contract. 1110 -1 DESCRIPTION Furnish, install, maintain, temporarily cover and uncover , relocate and remove stationary and barricade mounted work zone signs in accordance with the contract. Furnish, install, maintain and relocate portable work zone signs and portable work zone sign stands in accordance with the plans and the Standard Specifications . When portable work zone signs and portable work zone sign stands are not in use for periods longer than 30 minutes, collapse or remove sign stands and reinstall once work begins again. 1110 -2 MATERIALS Refer to Division 10. Item Section Work Zone Signs 1089 -1 Work Zone Sign Supports 1089 -2
11-7 Use portable work zone signs only with portable work zone sign stands specifically designed
for one another. Provide portable work zone sign stands, portable signs and sheeting that are listed on the NCDOT APL . Provide portable work z one signs and stands that are crash tested together as a system by the manufacturer. Poor performance of portable work zone signs or portable work zone sign stands at any site, whether or not related to a specific contract, will be grounds for non-accept ance of a product on any project under contract. 1110 -3 CONSTRUCTION METHODS
A.Work Zone Signs ( Stationary) All stationary Advance/General warning work zone signs require notification to existing utility owners per Article 105 -8 within 3 to 12 working days prior to installation. Install work zone signs (stationary) to stand within 2° of plumb in all directions and under all conditions. Erect signs per Roadway Standard Drawings . Splicing of work zone sign (stationary) posts is acceptable. Splice work zone sign (stationary) posts according to Roadway Standard Drawings . Remove entire post when removing signs w ith spliced posts. When required, cover work zone signs with an opaque material that prevents reading of the sign at night by a driver using high beam headlights. Use material that does not damage the sign sheeting. Any damage incurred from the covering of work zone signs will be determined using
Article 901 — 5. Replace or repair any damaged signs due to the covering.
B.Work Zone Signs (Barricade Mounted) Mount approved composite or roll up signs to barricade rails so the signs do not cover more than 50% of the top 2 rails or 33 % of the total area of the 3 rails. M ount signs at least one foot from the ground to the bottom of the sign.
C.Work Zone Signs (Portable) Install the work zone sign (portable ) and sign stand to stand plumb within 10° left and right, within 20° front and back and be capable of standing erect in windy conditions. Install roll up or approved composite signs at least one foot from the bottom of the sign to the edge of pavement elevation on two- lane two -way roadways. Install roll up or approved composite signs at least 5 f eet from the bottom of the sign to the edge of pavement elevation on multi -lane roadways. Clean the sign f ace before use. When not in use for periods longer than 30 minutes, lay the work zone sign ( portable ) flat on the ground and collapse the sign stand and lay it flat on the ground. 1110 -4 MEASUREMENT AND PAYMENT Nominal dimensions will be used to compute the sign panel areas . Work Zone Signs (Stationary) will be measured and paid as the actual number of square feet satisfactorily installed at each location and accepted by the E ngineer. Where a particular sign is used at more than one location, measurement will be made at each location. Payment for Work Zone Signs (Stationary ) will be limited to a maximum of 90 % of the total installed quantity. The remaining 10% will be paid o nce all signs have been removed. Work Zone Signs (Barricade Mounted) will be measured and paid as the actual number of square feet satisfactorily installed on barricades and accepted by the Engineer. Payment will
Source: North Carolina Standard Specifications for Roads and Structures, 2024 Edition. Pages 664–665 of 857.