355.01 Traffic Control Plans. In addition to adhering to Section 100.33.01 of the Standard Specifications the Contractor shall comply with the following. All traffic control shall conform to the latest editions of the Manual on Uniform Traffic Control Devices (MUTCD) and the State of Nevada Department of Transportation (NDOT) Standard Plans for Road and Bridge Construction, specifically, Plans T-35.1.1 through T-35.1.7, and as directed by the County.
The Contractor shall submit four (4) copies of proposed traffic control plan (TCP), with the same number of copies of the proposed project schedule, to the County for review and comments at least seven (7) calendar days prior to the Preconstruction Conference. The proposed TCP shall be prepared and signed by a Professional Traffic Operations Engineer (PTOE) or a Traffic Control Supervisor certified by the American Traffic Safety Services Association (ATSSA), hereinafter designated “TCS”. If the Contractor makes significant changes to the TCP, these changes must also be prepared and signed by the PTOE/TCS.
The final TCP signed by the PTOE/TCS shall be submitted to the County within five (5) working days after receipt of review comments to the proposed TCP.
The Contractor's TCP shall include, but not be limited to, the following:
Proposed construction zone and existing speed limits
All construction signing
Message Board locations
Location of flaggers
Types and location of traffic control devices
Temporary lane striping
Construction phasing (including phasing of detours, if any)
Detours
8 ½" x 11" individual access plans for multi-access properties
Accommodations for pedestrians and bicycles
Letter of conformance stating that all Category 1 and 2 traffic control devices used on the project meet the evaluation criteria of National Cooperative Highway Research Program (NCHRP) Report 350. Note that a sign together with its portable support is considered as a system, which together must meet the NCHRP Report 350 Requirements.
The County will provide written comments and/or corrections to the TCP. If necessary, the Contractor and County will meet to consider the comments and/or corrections to the plan prior to the Preconstruction Conference to resolve any issue relative to the TCP. Upon resolution of all issues or acceptance of the TCP as submitted, the County will accept the plans in writing.
Acceptance by the County of the submitted TCP shall in no way relieve the Contractor of the responsibility for safety requirements. Acceptance of the TCP by the County indicates that the plans generally appear to conform to the contract requirements. Such acceptance shall in no way be construed as confirmation of the technical accuracy or adequacy of the contents of the plans and shall not relieve the Contractor of the obligation to institute traffic control measures in full compliance with contract requirements, and which function safely and correctly, and are in conformance with applicable statutes, ordinances, and regulations.
Immediately after setting up of new or modified TCP, the Contractor shall have the TCS inspect the controls installed in the field to determine if all required controls have been installed and are operating as intended.
The TCS shall submit to the County a written inspection report on the traffic controls conformance with the approved TCP and contract requirements. If the TCS determines that the traffic controls are not in conformance with the approved TCP, contract requirements, or determines that the traffic controls are not functioning as intended, the report shall address such deficiencies and make recommendations for changes.
The County may require the Contractor’s PTOE/TCS to revise the TCP accordingly.
If at any time it is determined that traffic controls have been modified or are not functioning as intended, the County may request the Contractor’s PTOE/TCS to evaluate the traffic controls installed by the Contractor. Additionally, if during construction, revisions to the accepted plans are necessary for safety or accommodation to traffic, the County may require such revisions.
Any request by the Contractor to change the TCP shall be submitted in writing and accompanied with drawings, prepared and signed by the PTOE/TCS, showing the appropriate aspects of the TCP at least five (5) work days prior to implementation. Such requests must be approved in writing by the County prior to implementation.
355.02 Notification. Upon approval of the TCP, and at least two (2) working days prior to beginning construction, the Contractor shall notify and submit a copy of the approved TCP to the County, refuse collection agencies, and appropriate sheriff and fire departments, ambulance service, and any other emergency service as directed by the County.
At least two (2) mobile four-foot by eight-foot (4’ x 8’) changeable message boards shall be utilized to alert the public of construction and lane closures within the project a minimum of seven (7) calendar days prior
to start of any construction. The location of the message boards shall be finalized at the Preconstruction meeting. The location of the message boards may be moved at the direction of the County. The mobile changeable message boards shall operate twenty-four (24) hours a day for the entire duration of the Contract. The wording of the changeable messages shall be in accordance with the direction received from the County.
It shall be the Contractor’s responsibility to notify, in writing, all residents adjacent to the project of the construction working hours and duration, a minimum of seven (7) working days prior to beginning of work.
Subsequent additional notification shall be provided to directly affected properties (i.e. properties which driveways will be affected) no less than 24 hours and no more than 48 hours before the properties will be affected. The notice shall provide a brief description of the work to be performed and shall be personally delivered to each homeowner. If personal service of the notice cannot be provided to the homeowner, a notice shall be left at the front door and adjacent to the garage. The notification shall include the name and phone number of the Contractor for any homeowner questions or concerns. Driveway closures will be limited to one (1) hour.
355.03 General Requirements. The Contractor shall designate a Construction Traffic Control Supervisor (TCS) who shall be responsible for initiating, installing and maintaining all traffic control devices as shown on the TCP, as specified in the MUTCD, the NDOT Standard Plans for Road and Bridge Construction, specifically, Plans T-35.1.1 through T-35.1.7 and these Special Provisions. The Construction Traffic Control Supervisor shall be under the direct supervision of the Superintendent. The designated Construction Traffic Control Supervisor shall be available to be contacted by the County twenty-four (24) hours a day, seven (7) days a week for the life of this contract. The designated Traffic Control Supervisor shall be available to be on the work site within sixty (60) minutes after notification by the County. The Contractor shall submit the designated Construction Traffic Control Supervisor’s name, ATSSA certification number, and qualifications for County approval at the preconstruction conference. The Construction TCS shall:
Have at least one (1) year of field experience directly related to work site traffic control set up in a supervisory or responsible capacity and be certified by ATSSA as a worksite Traffic Control Supervisor
Understand the Contract requirements
Understand the MUTCD requirements
During a workday, make at least three (3) inspections of the condition and position of all traffic control devices in use each day before beginning work, at mid-shift, and one half (1/2) hour after the end of the shift
During a non-workday, make at least one (1) inspection of the condition and position of all traffic control devices
Correct all traffic control deficiencies
Coordinate maintenance of traffic operations with the PTOE/TCS who prepared the TCP if a different person
Report all corrective actions to maintain and protect traffic through the project
Review work areas, equipment operation and storage, and material and handling and storage relative to traffic safety; and
Furnish weekly written certification to the County that inspections and reviews were conducted and that traffic control devices met or exceeded the contract requirements. Weekly certification shall include daily records of traffic control activities and reviews.
The Contractor shall not proceed with any construction until TCP and the Construction TCS have been approved and the proper traffic control has been provided to the satisfaction of the County. Any days lost
due to improper traffic control or lack of a Construction TCS, will be charged against the Contractor's allowable working days.
The Contractor shall maintain public traffic throughout the project duration in accordance with the approved TCP and perform work in a manner that assures the safety and convenience of the public and protects the residents and property adjacent to the project. During construction, the Contractor shall be prepared to provide access through the construction zone for police, fire or emergency vehicles as necessary to reach their destination with a minimum delay. If existing traffic control signs are removed, the Contractor shall install temporary signs of the same designation as close as possible to the original location.
Should the Contractor choose to accomplish work methods or phasing which require modification to any part of the traffic control zone in the approved TCP, the Contractor shall submit for approval a modified traffic control plan at least five (5) working days prior to implementation of such work or phasing.
The Contractor shall make special considerations for local access to and from properties adjacent to the construction zone. All efforts shall be made to minimize the inconvenience to the local residents and business owners. All driveways shall be opened and accessible at the end of shift.
Type I or Type II barricades will not be permitted for use to prevent vehicle traffic from entering a closed portion of roadway. Only Type III barricades will be used in all such instances. Type III-B barricades used for this purpose shall be placed a maximum four (4) feet apart. Yellow warning lights may be necessary for some barricade or drum applications.
Traffic control devices shall be removed as soon as they no longer apply to the current construction activities.
355.04 Truck Route/Storage Area Requirements. The construction limits of this project are adjacent to residential areas. Truck route and storage area locations shall be identified, and a plan shall be submitted seven (7) calendar days prior to the preconstruction meeting, for review and approval by the County and TRPA. Storage areas must be approved prior to the TRPA pre-grade inspection.
The Contractor's truck route plan shall include, but not be limited to, the following:
Proposed construction zone
Proposed storage areas
Location of flaggers (to control truck access, where applicable)
Construction phasing (including phasing of intersection construction and detours, if any); and
Proposed truck route (including the location of other construction projects which impact, or may be impacted by, the proposed haul route).
Storage of construction materials, supplies, and equipment within the public streets and alleys during night and weekend periods is prohibited, except where approved by the County and TRPA. At no time shall materials, supplies, or equipment be stored or stockpiled within 30 feet of a travel lane unless separated by guardrail or concrete barrier rail. All storage areas shall comply with the TRPA and SWPPP requirements for BMPs while storing or stockpiling material.
The Contractor shall not proceed with any construction until the truck haul plans have been approved to the satisfaction of the County and TRPA. Any days lost due to the lack of an approved truck haul plan will be charged against the Contractor’s allowable workdays.
355.05 Phasing and Access Requirements. Work shall be performed in a manner that will minimize inconvenience to the public.
During construction, lane closures or detours will be allowed within the project area. For lane closures, the Contractor shall provide and maintain a minimum of one (1) paved travel lane at least twelve (12) feet wide at all times and a minimum of (2) two flaggers must be provided. Additional flaggers may be required by the County. The maximum length of a lane closure shall be approximately 1,500 feet. Pilot cars may be required for lane closures. Otherwise the contractor shall maintain one paved travel lane in each direction at least twelve (12) feet wide at all times. Lane closures shall only be allowed during construction hours while work is being performed unless otherwise approved. Traffic delays shall be no more than ten (10) minutes.
The Contractor shall provide and maintain a minimum of one (1) access to each private property adjacent to construction at all times, with the following exceptions: 1) Driveway closures during construction shall be limited to a maximum time of one (1) hour during time-consuming construction activities. In all cases, driveway access shall be restored quickly, as soon as the conditions allow, rather than combined with daily site clean-up at the end of the work shift. In all instances, however, driveway access shall be restored prior to the end of the work shift.
During any temporary suspension of work due to weather or other conditions, the Contractor shall open roadways, as agreed by the Contractor and the County to accommodate traffic during the delay. In the event of substantial delays or temporary cessation of work for a period of more than one (1) calendar day after original notice, the Contractor shall re-notify affected businesses and tenants of the delay and revised work schedule.
355.06 Measurement and Payment. Payment for CONSTRUCTION TRAFFIC CONTROL will be made at the contract LUMP SUM price bid on a percentage-completed basis in direct proportion to the percentage contract value of project work completed and shall be full compensation for furnishing all materials, labor, equipment, tools, and appurtenances necessary to complete and maintain the work. Increases in the total contract price for any reason does not justify an increase in the lump sum bid price for CONSTRUCTION TRAFFIC CONTROL. The County reserves the right to adjust the partial payment amounts of CONSTRUCTION TRAFFIC CONTROL based on any adjustments made to other pay items on the Payment Request. In addition, the County reserves the right to adjust the partial payment amounts of CONSTRUCTION TRAFFIC CONTROL based on unsatisfactory implementation and maintenance of construction traffic control.