Engineering Policy Subcommittee: Approved w/approval from WZQC 02/11/03, Approved 09/15/03 Rev 03-0616I
Engineering Policy Committee: Approved 03/24/03, Tabled 09/25/03Submitted by Maintenance
Director’s of Operations & Project Dev.: Approved 05/29/03Team Leader: Jim Brocksmith
Chief Engineer: Reviewed 10/24/0310/27/03
Team Members and ResourcesVince Imhoff-PO / Scott Stotlemeyer-MT / Kirsten Munck-DE / Dan Smith-RD
Mary Ridgeway-FHWA / AGC of Missouri Safety Committee / Jim Andrews-Safety Consultant
Joe Rickman-TR / Kevin Irving-FHWA
(Rationale: This specification has been updated to include NCHRP 350 and MUTCD requirements as well as current industry standards and best practices. This section now includes specifications for worker apparel, traffic control device coverings, deficiencies in traffic control devices, contractor traffic and traffic control device monitoring, flagger requirements, and lighting requirements for nighttime work. Information was removed from the standard plans regarding flashing arrow panels, and placed in the specifications. In addition, several job special provisions have been incorporated into these specifications, including law enforcement services, crossover requirements, changeable message signs and portable traffic signals. The Work Zone Quality Circle has worked with the AGC Safety Committee to address concerns of the construction industry. This section has been revised to be performance-based.)
2/11/03 – Recommended changes were also made for the standard plans and the pay items.
3/24/03 – EPC added “and other traffic control devices” to the first sentence so that we don’t limit ourselves to relocating permanent signs only. Pluralized “flashing arrow panels” throughout, and struck the last half of the last sentence in Sec 616.4.2.7 including “that may come to the contractor’s attention,” to make the contractor responsible for supplying all accident reports. Approved as revised.
5/20/03 – The Work Zone Quality Circle met with Don Hillis to address concerns that he and Dave Nichols had. Minor revisions were made to Secs 616.3.3 regarding apparel, 616.4.2.5 adding that an order record will be issued when liquidated damages are assessed and 616.5.2 to better define “hot spots.” Don stated that he would vote to approve this section as revised.
8/25/03 – Incorporated DSP 95-04 Temporary Traffic Signals and Lighting (two-way, single-lane operation) in to section 616.8 and created new item of Work Zone Traffic Signals.
8/28/03 – Revised wording of first sentence of 616.4.3 regarding flagger certification based on comments from the AGC.
9/15/03 - EPSC added a method of measurement section and revised Basis of Payment section. Deleted 616.9.3 - 616.9.7 due to re-formatting.
9/25/03 - EPC tabled this spec due to numerous questions that need addressing by team. Team leader had recently met with the Chief Engineer to address many of these questions. Revisions will follow.
10/24/03 - Revisions to 616.3.3, 616.4.2.5, 616.4.2.6, 616.6 and 616.7 based on comments from the Chief Engineer. Revisions have been discussed with and approved by Don Hillis.
10/27/03 - The reference in proposed Sec 616.8.2 was changed to 902.3.
SECTION 616
TEMPORARY TRAFFIC CONTROL PLAN
616.1 Description. This work shall consist of furnishing,and installing, operating, maintaining, cleaning, relocatingand removing temporary traffic control devices and equipment, and the removal and/or relocation or covering and uncovering of existing signs and other traffic control devices in accordance with the contract documents and or as directed by the engineer. For purposes of this specification, the work zone will be defined as the area between the first and last temporary traffic control device as shown on the plans for the work being performed.
616.2 Material. All material shall conform tobe in accordance with Division 1000, Materials Details, and specifically as follows:
Item / SectionConstruction Signand Reflective Material / 1041
Sign Posts / 903
Retroreflective Sheeting / 1042
Flexible Non-Metallic Drum-Like ChannelizersTemporary Traffic Control Devices / 1063
616.2.1 Flashing Electric Light. This unit shall be an 8-inch (200 mm) conventional traffic signal section meeting the requirements of Sec 902. Each unit shall contain a yellow lens. The contractor shall furnish lamps for the flashing electric lights. Each unit shall contain a minimum 8-inch (200 mm) tunnel visor and be equipped for single section mounting. The flasher unit may be of the synchronous motor or NEMA solid-state type operated on 120 VAC. Flashing electric lights which will become property of the Commission shall be controlled by NEMA solid state flasher units and be connected to a permanent power supply. Two-circuit flasher units shall be used to provide alternate flashing of the lights when mounted on barricades or bridges. Indications shall be flashed at not less than 50 nor more than 60 flashes per minute, with an approximate 50 percent on-off ratio. The contractor shall, at no cost to the Commission, provide all necessary connections to an electrical power source for operation of flashing electric lights.
616.3 2.2 Safety Requirements for Traffic Control Devices.
616.23.2.1 All traffic control devices shall conform to the criteria and standards of effectiveness as set forth inbein accordance withthe MUTCD, NCHRP 350 and any applicable safety and design codes.Category II and III devices shall meet test level 3 criteria.
616.2.23.2 The contractor shall furnish a manufacturer's certification that each type of traffic control device, including appurtenances and ballasts, supplied complies with crash test requirements of NCHRP 350, Test Level 3 (TL-3) and has received FHWA acceptance. However, Rregardless whether if the device unit meets NCHRP 350 criteria, the engineer reserves the right of final approval. Installation of a device unit prior to the engineer's approval shall be at the contractor's risk.
616.3.3 All construction-related personnel shall, at a minimum, wear ANSI/ISEA Class 2 apparel in conformance with the MUTCD when present in the work zone.
616.3 4 Construction Requirements.
616.34.1 The contractor shall furnish, install, maintain, clean and relocate all signs, drums, cones, barricades, delineators, object markers, flashing arrow panels, channelizing devices, lights and other traffic control devices shown on the plans, or as directed by the engineer. Performance and operational aspects of the devices All traffic control devices shall be in accordance with meet the requirements of the latest editions of the MUTCD and the Missouri Quality Standards for Work Zone Traffic Control Devices. Any unacceptable device shall be replaced by the contractor as soon as possible but not to exceed 24 hours after the contractor had been notified.
616.34.1.1 All traffic control devices shall be removed as soon as practical when the devices are no longer needed. When work is suspended for short periods of time, traffic control devices that are no longer appropriate shall be turned away from traffic, removed or covered.signs, except the project terminal signs, shall be covered, set aside, turned, removed or relocated as work progresses or is completed and their necessity ceases to exist. Sign covering shall meet the requirements of the latest edition of the Missouri Quality Standards for Work Zone Traffic Control Devices. All temporary traffic control devices shall be removed after completion of construction and shall remain the property of the contractor unless specified otherwise. All permanent traffic control devices that are in conflict with temporary traffic control devices shall be covered or removed as shown inon the plans or as directed by the engineer. Upon completion of the work, all permanent traffic control devices to remain in place shall be restored to their original condition.
616.4.1.2 During any period of two hours or more when construction-related personnel are not present in the work zone to perform duties related to the work zone, all “Work Zone Fine” signs shall be covered.
616.4.1.3 All covers shall completely obscure the entire face of the device without damaging the device. Covers shall provide a neat appearance and shall not cause a safety concern. Any proposed covering method shall be approved by the engineer prior to use.
616.4.1.4 All permanent traffic control devices relocated on a temporary basis shall be moved in the timeframe designated by the engineer and shall remain visible to the traveling public during all stages of construction. The contractor shall place temporarily relocated permanent traffic control devices in the final location when construction is complete. Damaged devices shall be replaced by the contractor at the contractor's expense.
616.34.2 The contract will indicate the minimum requirements for traffic control. With the engineer’s approval, Tthe contractor may, at no cost to the Commission, add to the traffic control plan any temporary standard signs or traffic control devices or services the contractor considers necessary to adequately protect the public and the work. Device quantities may be adjusted accordingly.
616.34.2.1 Signs and sign quantities for blasting areas are will not be included in the contract traffic control plan. It shall be tThe contractor'sresponsibilityshall be responsible forand expense to furnishing, installing, maintaining and remove removing blasting zone signsing in accordance with the MUTCD at the contractor’s expense. Placement of blasting area zone signsing shall be subject to the engineer's approval.
616.34.2.2 Some projects require establishment of stage construction and the traffic control plans are developed accordingly. Work in any of the specified construction stages or other unrelated items of work may be accomplished concurrently with another specified stage provided that no interference with the prescribed handling traffic procedures will occur. The contractor shall submit traffic control plan revisions to the engineer should the contractor choose to deviate from the stages shown in the contract. All changes to the traffic control plan resulting from contractor staging revisions, including proposed total road closures for the contractor’s convenience, shall be submitted in writing to the engineer for review and acceptance are subject to the engineer's approval and shall be verified in writing prior to implementation. Sign and device Device quantities shall may be adjusted accordingly.
616.34.2.3 If the engineer determines the need for additional signs or other traffic control devices not included in the traffic control plan, the contractor will be notified in writing to provide the additional signs or devices. Reimbursement for authorized changes to the traffic control plan will be made in accordance with Sec 104.3, unless covered by contract unit prices.
616.34.2.4 The contractor shall monitor traffic flow through the project,. When the traffic control plan is initially implemented, and each time a significant change occurs in the plan or a new stage of the traffic control plan is implemented, the contractor and the engineer shall review the traffic flow through the project. Together, they shall drive through the traffic control zone(s) of the project in both directions, at least once each direction during both daylight and nighttime conditions within the next twenty-four hour period, to determine that traffic can safely and efficiently pass through the area covered by the traffic control plan, that all signs and traffic control devices are in place, visible and functioning properly, and that there are no hazards to traffic in or adjacent to the roadway which should be moved, eliminated or corrected. If it is determined that a deficiency exists, the contractor shall take corrective action as directed by the engineer. No additional payment shall be made for the contractor's compliance with this specification if the corrective action is within the requirements of the traffic control plan. The contractor will be compensated for any corrective action which is in addition to the requirements of the traffic control plan. A nighttime review of the traffic control devices is not required when only beginning and ending construction signs are in place.The contractor shalland verify that all traffic control devices are in place and functioning properly during both daytime and nighttime conditions, as applicable. If the contractor determines that a deficiency in any traffic control device exists, the contractor shall take corrective action. No additional payment will be made for the corrective action.
616.4.2.5 Deficiencies of traffic control devices reported by the engineer may be documented by an order record and shall be corrected as directed by the engineer. If there is a FfFailure to correct deficiencies in the time allocated by the engineer may result in the suspension of work., the failure will result in cost to the Commission not readily subject to accurate determination. For this reason, and to liquidate the cost to the Commission, liquidated damages in the amount of $250 per hour will be assessed until the deficiencies are corrected to the satisfaction of the engineer, and an order record will be issued.
616.4.2.6 The contractor shall submit a written log of work zone traffic control reviews noting any deficiencies and corrective actions taken to the engineer on a weekly basis.
616.34.2.57 The contractor shall make a visual inspection of the traffic control devices on sections of the project which are open to traffic and on sections which are adjacent to those sections open to traffic. This shall occur after the traffic control devices are in place to the satisfaction of the engineer and the contractor as required by Sec 616.3.2.4. This inspection shall ascertain that all traffic control devices and signs are in place and functioning properly, and that there are no deficiencies or corrections needed in the work zone. A brief written summary of this inspection shall be made and shall include but not necessarily be limited to the time of the inspection, the person performing the inspection, the general weather, roadway conditions and visibility and any deficiencies detected and changes or corrections made. If it is determined in this inspection that a deficiency exists in the traffic control plan, the contractor shall report it verbally to the engineer. The contractor shall submit a written summary of inspections performed to the engineer on a weekly basis.
616.3.2.6 All traffic control devices shall be inspected at least daily with the following exceptions:
a) Non-portable construction signs and pavement markings on sections of the project with no project imposed speed limit restrictions shall be inspected at least weekly.
(b) Portable construction signs, including cones, flashing arrows and channelizers used with the signs, shall be inspected a minimum of two times each day. The interval between inspections shall not exceed six hours during active work.
(c) Traffic control devices in the work zone shall be reinspected after finding any physical evidence or other information suggesting an accident has occurred in the work zone.
616.3.2.7 The contractor shall providegive written notice to the engineer of any pedestrian or vehicular accident whenre physical evidence or other information suggests an accident has occurred in the work zone. The contractor shall obtain and provide to the engineer copies of law enforcement accident reports for any accidents in the work zone which that may come to the contractor's attention.
616.34.3 Each flagger shall maintain a valid flagger certification card that certifies the flagger hasthey have been trained in the principles of flagging in accordance with the MUTCD.All flaggers shall maintain a valid flagger certification from ATSSA, the National Safety Council, or other organization approved by MoDOT. Certifications will not be required in emergency situations that arise due to actions beyond the contractor’s control when flagging is necessary to maintain safe traffic control on a temporary basis. All flagging operations, flagger attire, hand signals and traffic control devices pilot vehicles shall be in accordance with the MUTCD. Flaggers shall be provided as specified shown in on the plans, or as approved or directed by the engineer or when equipment is crossing a road open to vehicular traffic. The contractor may use a pilot vehicle to supplement the flagging operation upon approval from the engineer. When two-way traffic is maintained over a single lane, each flagger involved in the traffic flagging operation shall be equipped with a portable, two-way, communications method approved by the engineer.
616.3.4 The length of time that the contractor may maintain the lane closures or one-way traffic operations shall be kept to a minimum and shall be subject to the engineer's approval. The contractor shall furnish the engineer a traffic control plan indicating the proposed method to achieve temporary stoppage of all traffic lanes if construction operations require such. The plan shall indicate any advance warning or regulatory signs, if used, and their locations; flagmen, if used, and their locations; and all other traffic control devices and their locations which may be used to stop all traffic. A one time payment for traffic control devices used to temporarily stop all traffic will be made at the unit price for those like items contained in the contract. No direct payment will be made for removing or reusing these particular signs as an indeterminate number of occasions for their use may occur. Traffic control devices used by the contractor which do not have a specific pay item in the contract shall be supplied, installed, maintained and removed by the contractor at no cost to the Commission.