Part 1 — General
1.1 Section Includes
A.Temporary traffic control requirements necessary to control vehicular and pedestrian traffic flow in a safe and efficient manner in construction zones.
1.2 Related Sections
A.Section 00555: Prosecution and Progress
B.Section 01558: Temporary Pavement Markings
C.Section 02844: Concrete Barrier
D.Section 02890: Retroreflective Sheeting
1.3 References
A.AASHTO Roadside Design Guide
B.American National Standards Institute (ANSI)
C.Americans with Disabilities Act
D.American Traffic Safety Services Association (ATSSA)
E.Institute of Transportation Engineers (ITE) Standard on Vehicle Traffic Control Signal Heads
F.International Safety Equipment Association (ISEA)
G.MASH 2016: AASHTO Manual for Assessing Safety Hardware published 2016
H.National Electrical Manufacturers Association (NEMA) TS 5: Portable Traffic Signal Systems (PTSS) Standard
I.NCHRP Report 350 : Recommended Procedures for the Safety Performance Evaluation of Highway Features
J.UDOT Flagger Training Handbook
K.UDOT Guidelines for Crash Cushions and Barrier End Treatments
L.UDOT Quality Guidelines for Temporary Traffic Control Devices
M.Utah Manual on Uniform Traffic Control Devices ( Utah MUTCD)
N.UDOT Sign Manual
O.UDOT Standard Highway Signs Supplement
1.4 Definitions
A.Automated Flagger Assistance Device (AFAD) – A remotely operated temporary traffic control device with high visibility signage, signal heads, and automated flags. These devices are intended to direct and control traffic using only one person.
B.Preconstruction Posted Speed Limit - The permanent posted speed limit prior to commencement of construction activities.
C.Temporary Pedestrian Access Route (TPAR) – A temporary detectable pedestrian route that is provided when existing routes are disrupted, closed or relocated and includes accessibility features present in the existing facility.
D.Temporary Portable Rumble Strips (TPRS) – An array of three heavy rubber strips that create noise when they are run over and are used to alert drivers to the presence of road construction.
E.Temporary Portable Traffic Signal System (TPTSS) – A complete, integrated, and functional system deployed in the field that manages the movement of vehicular traffic, pedestrian traffic or both in a particular place for a particular purpose.
F.Traffic Slow Down – An isolated planned event where traffic on a highway is reduced in speed to provide a gap for work to proceed.
1.Examples include the crossing of the highway with heavy equipment or the adjustment of traffic control devices.
1.5 Submittals
A.Traffic control plan for review .
1.Include at least the following:
a.Traffic control measures for each phase of work in sufficient detail to provide for the safe and efficient movement of traffic, pedestrians, and bicycles during construction. 1) Describe equipment, devices, and implementation instructions.
b.Work elements t o be accomplished in each phase.
c.Details for each change to traffic control that is planned for the duration of the project .
d.Expected duration of each traffic control configuration.
e.Length of Need (LON) for temporary barriers .
f.Taper lengths, lane shift widths, device spacing, and sign locations for temporary and existing signs .
g.Removal of traffic control elements that conflict with temporary traffic control measures, such as existing traffic signs or traffic signals .
h.Worker parking, work vehicle access, and equipment access.
i.Location and hours of use for TPRS .
j.TPAR and devices for pedestrian access .
k.Temporary traffic signal (TPTSS) plans and list of proposed equipment . 1) Red, yellow, and green times and basis of timing calculations .
2.Provide supporting engineering calculations.
3.Provide the seal of a Professional Engineer licensed in the State of Utah on drawings and calculations.
B.Traffic Control Inspection forms weekly for information.
1.Submit on a day and time acceptable to the Engineer.
C.Traffic Slow Down .
1.Submit request for approval at least 7 working days prior to Traffic Slow Down.
2.Include at least the following:
a.The route,
b.The beginning and ending mileposts or mile markers,
c.Direction of the closure
d.The date and time of the beginning of closure
D.Traffic Control Supervisor certification or certificate of completion for information.
E.ATSSA flagger certification for information F TPTSS manufacturer’s signal training program certificate of completion for information.
1.Certificates of c ompletion from the TPTSS manufacturer are valid for three years from date of issue.
G.AFAD type and manufacturer’s training program certificate of completion for information.
1.Certificates of completion from the AFAD manufacturer may not be more than 3 years old.
H.APL Compliance Form and manufacturer's installation instructions for the following product when used. 1. Temporary Steel Barrier.
1.6 Traffic Control Coordination Meeting
A.Schedule a traffic control coordination meeting with the Engineer and invite at least the following:
1.Contractor’s Traffic Control Designer
2.Contractor’s Traffic Control Maintainer
1.7 Device Crashworthiness
A.Crashworthiness requirements.
1.Devices manufactured on or before December 31, 2019 and that meet NCHRP 350 crashworthiness criteria may be used o n projects advertised, or having a Request for Proposal (RFP) Issue date for construction before July 1st, 2025.
2.Devices manufactured after December 31, 2019 are required to meet MASH 2016 crashworthiness criteria or have a current Department Certification Letter .
B.Devices in the following FHWA device category are required to meet crashworthiness requirements:
1.Category 1 - cones, barrels and delineators
2.C ategory 2 - barricades and sign stands
3.C ategory 3 - barriers, crash cushions and truck mounted attenuators
4.Category 4 - a rrow boards and portable variable message signs
a.Category 4 devices are certified by a Department Certification Letter.
C.Department Certified devices can be found at http://www.udot.utah.gov/go/standardsreferences
1.8 Traffic Control Requirements
A.Meet the following requirements for traffic control and document them in the traffic control plan :
1.Meet the requirements in the TC series Standard Drawings, Utah MUTCD, and the Americans with Disabilities Act.
2.Provide for the safe and efficient movement of traffic.
a.A ddress expected delay with the Project Public Involvement Team or the Region Communications Manager if the project does not have a Public Involvement Team .
3.Provide for the safe and efficient movement of pedestrians and cyclists w hen existing facilities are disrupted, closed or relocated by a work zone.
a.Provide detectable temporary facilities that include accessibility features consistent with the features present in the existing pedestrian facility
b.Temporary removal of parking is possible with approval of local agencies and coordination with Project Public Involvement in order to provide a temporary bikeway
c.Detour Length should not exceed original bike route length by more than a half mile
4.Provide concrete barrier, crash cushions and attenuators including:
a.P rotection as required for hazard mitigation for workers . Refer to TC 3 Series Standard Drawings .
b.Protect all hazards to motorists within the appropriate AASHTO clear zone including bridge parapets, barrier blunt ends, poles, and large equipment. Refer to the UDOT Guidelines for Crash Cushions and Barrier End Treatments for acceptable devices. http://www.udot.utah.gov/go/standardsreferences .
5.Provide and remove temporary pavement markings as needed for traffic control.
a.R emove any existing permanent pavement markings that conflict with temporary markings .
b.Refer to Section 01558
6.I ncorporate proposed traffic signal timing , phasing, and detection plans if the operation or equipment of permanent traffic signals will be impacted by construction.
7.Incorporate TPRS when there is a change in the width, ali gnment or number of lanes on freeways or interstates with two lanes in a single direction.
8.Zipper Merge Signing as required
9.Use lane width restrictions of less than 12 ft only when approved by the engineer with the following minimums:
a.Preconstruction posted speed limit less than 55 mph, minimum lane width 10 ft.
b.Preconstruction posted speed limit of 55 mph or greater, minimum lane width 11 ft.
10.Use the preconstruction posted speed limit prior to work zone to comput e the sign spacing, taper length, buffer zone, and work clear zone distances. Use the work zone posted speed limit to determine the tangent spacing for channelizing devices .
11.Refer to http://www.udot.utah.gov/go/standardsreferences , Policy 06C-61 for information.
1.9 Traffic Control Maintainer
A.Provide a traffic control maintainer to install, maintain and remove temporary traffic control devices according to the authorized traffic control plan.
B.Qualifications:
1.Certified by the Department or by the American Traffic Safety Services Association (ATSSA) as a Traffic Control Supervisor . A list of approved training providers is available at http://www.udot.utah.gov/go/standardsreferences
2.Persons that have passed the ATSSA Traffic Control Technician (TCT) course but do not have the required experience for certification may also perform the inspections and sign documentation.
C.Authority
1.Obtains and uses labor, equipment, and materials necessary to maintain traffic control.
2.Changes traffic control operations according to the authorized traffic control plan , except for any adjustment to timing, phasing, or detection, or any other settin gs in the signal controller for permanent traffic signal s.
D.Responsibilities and Duties
1.Oversee traffic control operations and TPAR devices .
2.Be present and an active participant during the installation, maintenance, and removal of t emporary traffic control devices.
3.Implement the authorized t raffic control plan.
4.Remain available 24 hours a day, 7 days a week and can be on- site within 30 minutes of notification.
5.Correct deficiencies immediately upon notification from the Engineer.
6.Manage traffic control inspections .
a.Document inspections on a form acceptable to the Engineer . 1) Include at least the following: a) Assessment of device quality. b) Items in compliance with the authorized traffic control plan.
b.Inspect at least four times each day with at least one of the inspections conducted during nighttime hours , when construction work is occurring: 1) Before beginning of shift , 2) At mid -shift, 3) Half-hour after shift ends , and 4) At the m idpoint of the off -shift period .
c.Conduct traffic control inspections twice each day w hen construction is not occurring, but traffic control is present. 1) Once during daylight hours . 2) Once during nighttime hours. 3) At least 8 hours between inspections .
7.Coordinate project traffic control with emergency services and local law enforcement agencies.
8.Monitor traffic queue lengths and adjust advanced warning signs to provide adequate warning of the actual back of queue resulting from construction activities.
9.Adjust the TPRS as necessary to maintain proper alignment, spacing and location.
10.Adjust the TPAR devices as necessary to maintain a dete ctable route that is consistent with the accessibility present in the existing pedestrian facility.
1.10 Flaggers
A.Flaggers must have a current ATSSA flagging certificate and must present proof of certification upon request by the Department.
1.Refer to http://www.udot.utah.gov/go/standardsreferences for a list of acceptable courses taught by certified instructors.
1.11 Price Adjustments
A.The Department reduces payment when traffic control is not in compliance with the authorized t raffic control plan or when the C ontractor fails to meet all requirements cited or referenced in this Section.
1.The amount per day by which the Contractor’s compensation will be reduced is calculated using the daily charge in the Schedule of Liquidated Damages in Section 00555 or the Contract lump sum bid price for Traffic Control divided by the number of contract days, whichever is greater.
1.12 Temporary Portable Traffic Signal System (Tptss) Training
A.The setup, programming, signal timing changes, maintenance, and repairs of a TPTSS must be performed by at least one person who has successfully complete d a signal training program for the TPTSS in use.
1.13 Automated Flagger Assistance Device (Afad) Training
A.The setup, programming, operation, maintenance, and repair of the AFAD must be performed by a person who has successfully completed a training program for the AFAD s in use.
1.14 Moving Lane Operation for Multi Lane Less Than One Hour
A.Duration at any one location not to exceed 1 hour.
B.Coordinate with TOC (801) 887- 3700 to use overhead variable message signs for advance notification when available.
C.Use 2 additional truck mounted arrow boards for each lane, one straddling the lane and one in the closed lane(s) with a TMA when closing more than two lanes. The E ngineer's approval for this is required.
Part 2 — Products
2.1 Pilot Car
A.Equip with a retroreflect ive sign.
1.Refer to Section 02890 .
2.Utah MUTCD sign G20 -4.
B.Equip with at least two rotating , oscillating, or strobe lights.
1.Minimum 4 inch diameter /width and minimum 6 ft mounting height .
2.Yellow color .
2.2 Flagger Equipment and Clothing
A.Refer to the UDOT Flagger Training Handbook. http://www.udot.utah.gov/go/standardsreferences .
B.Safety Clothing
1.Flagger vest and hard hat – Orange, red- orange, or fluorescent version of these colors.
a.Wear safety apparel meeting the requirements of ANSI /ISEA "American National Standard for High- Visibility Apparel and Headwear " or equivalent revisions and labeled as meeting the current ANSI/ISEA publication year, standard performance for Class 3 risk exposure.
b.Hard hat with 10 square inches of white or strong yellow - green retroreflective tape placed around the base of the hard hat and visible to traffic from all directions.
2.3 Traffic Control Signing and Devices
A.Signs
1.Comply with Section 02890.
2.Comply with TC S eries Standard Drawings.
3.Comply with SN S eries Standard Drawings when using post mounted signs .
B.Channelizing Devices
1.Comply with TC S eries Standard Drawings.
2.Comply with Section 02890.
C.Precast Concrete Barrier
1.Comply with BA Series Standard Drawings .
2.Comply with Section 02844.
D.Temporary Steel Barrier
1.MASH Compliance
2.Comply with manufacturer’s instructions and procedures
E.Use a truck -mounted attenuator rated for the preconstruction posted speed limit.
1.Test Level 2 for speeds 45 mph or less .
2.Test Level 3 for speeds greater than 45 mph.
3.Do not use a truck -mounted attenuator (TMA) to protect blunt end for more than 72 hours.
2.4 Arrow Board
A.Comply with all standards as specified in the Utah MUTCD, Section 6F. 61 Arrow Boards .
B.Refer to the TC Series Standard Drawings and the Utah MUTCD.
2.5 Temporary Portable Rumble Strips (Tprs)
A.Roadquake 2 Series Temporary Portable Rumble Strip manufactured by: Plastic Safety Systems 2444 Baldwin Road Cleveland, OH 44104 (800) 662- 6338
2.6 Temporary Walkway and Ramps
A.Refer to TC Series Standard Drawings and the Utah MUTCD
2.7 Temporary Portable Traffic Signal System (Tptss)
A.Utah MUTCD- compliant.
B.Manufactured according to the latest edition of NEMA TS 5.
C.Trailer
1.General
a.Self-contained trailer -mounted unit, consisting of at least two signal heads per trailer. 1) At least one signal head mounted on an overhead mast arm capable of extending over the travel lane. 2) One signal head mounted on a vertical upright.
b.Safety orange color finish.
2.Accessories
a.Removable or lockable self -storing tongue.
b.Lifting ring that is integral to the TPTSS trailer and structurally sufficient to facilitate the lifting and placing of a fully equipped TPTSS trailer.
c.Four stabilizer jacks rated for the full anticipated load.
3.Power
a.Batteries sufficient to operate the signal for a minimum of 21 days at temperatures of 50 degrees F or higher without supplemental charging.
b.Equipped with a charging system for solar collection capability, and an onboard battery charger capable of being used with a 120VAC power source.
4.Wind Load
a.The TPTSS trailer and all mounted equipment must withstand winds of 90 mph.
D.Lift System
1.Equipped with a hydraulic lift system sufficient to raise and lower the vertical upright and horizontal mast arm to and from the operating position.
2.Overhead mast arm and signal head bracket must allow a minimum vertical clearance of 17.5 ft measured from the bottom of the lowest portion of the signal head or bracket to the road surface.
E.Signal Heads
1.Cast aluminum or polycarbonate and have 12 inch LED indications, conforming to ITE Standard on “Vehicle Traffic Control Signal Heads.”
2.Include back plates and retroreflective tape border.
3.Refer to SL Series Standard Drawings.
F.Operation
1.Equipped with at least one Controller Unit (CU).
2.All CUs within a traffic control setup must be in communication with each other, with signal timings coordinated.
3.Each CU equipped with a Malfunction Management Unit (MMU) conforming to NEMA TS 5.
a.Each signal within the signal system must be equipped with its own MMU to ensure redundancy within the Malfunction Management System.
G.Detection
1.Installed with vehicle detection hardware that communicates to the CU.
2.8 Automated Flagger Assistance Device (Afad)
A.AFADs that comply with the Utah MUTCD requirements . Use either:
1.Red/Yellow AFAD with 12 inch circular signal heads and mechanical gate arm.
2.Stop/Slow AFAD with mechanically changed signs and 12 inch circular red signal head (optional mechanical gate arm)
B.Manufactured according to the latest edition of NEMA TS 5.
C.Provide at least one ATSSA Certified flagger trained to operate the AFAD product, on site at all times while work zone temporary traffic control is in operation.
Part 3 — Execution
3.1 General
A.Implement and maintain traffic control according to the authorized traffic control plan.
1.Make changes immediately and notify the E ngineer if traffic control changes that deviate from the authorized traffic control plan are required to make the work zone safe for workers or the traveling public.
2.Update the traffic control plan with the changes and resubmit for review.
B.Maintain traffic control as required by the authorized traffic control plan when traffic control is in place and work is not actively occurring, including overnight, weekends and holidays.
C.Maintain traffic control devices during and after all snow plowing operations.
1.Clear snow and ice away from the following so that they function as intended:
a.Traffic control devices.
b.TPAR devices.
c.Contractor provided TPAR features.
D.The UDOT Quality Guidelines for Temporary Traffic Control Devices identifies different levels of device quality. Refer to: http://www.udot.utah.gov/go/standardsreferences
1.Meet the acceptable device quality level for all traffic control devices.
2.Wash or replace devices as needed to meet acceptable level.
E.Remove equipment, material , traffic control devices and debris that encroaches upon or inhibits travel in the travel lanes, bike lanes or TPAR identified in the traffic control plan.
3.2 Traffic Control Signing and Devices
A.Use preconstruction posted speed limit to compute sign spacing, taper lengths, buffer zones , and construction clear zone.
1.Use plastic drums or directional barricades for lane closure taper devices for speeds 50 mph and greater.
2.Do not use t ubular markers at night.
3.Use drums, vertical panels or cones for night work.
B.Use preconstruction posted speed limit during construction to compute the tangent spacing for channelizing devices.
C.Use a construction zone attenuator or permanent style end sections, as listed in the UDOT Guidelines for Crash Cushions & Barrier End Treatments . http://www.udot.utah.gov/go/standardsreferences
1.Use a construction zone attenuator when approach ends of temporary precast barrier are within the maximum AASHTO clear zone.
a.Use AASHTO Roadside Design Guide to determine proper clear zone distance requirements .
b.Refer to the CC S eries Standard Drawings and manufacturer’s recommendations to install crash cushions .
D.Maintain cable barrier and anchor systems during construction.
1.Protect existing hazards when cable barrier and anchor systems are rendered inoperable by work.
a.Address barrier length of need for the hazard.
2.Maintain the required tension in the cable barrier system when the cable is disconnected by installing anchor systems on each end of the disconnect.
a.Do not cut cable. Disconnect cable at cable splice or anchor system locations only.
3.Install manufacturer’s approved terminal compatible with existing cable system.
a.Tension cable to manufacturer’s requirements.
4.Remove anchor system when cable barrier is reestablished.
E.Remove all traffic control devices from site of work that are no longer necessary for the authorized traffic control plan.
1.Relocate traffic control devices from the roadway a distance twice that of the Work Clear Zone if they will be used within 24 hours of the daily work stoppage and are not required for immediate traffic control. Refer to the TC Series Standard Drawings.
a.Obtain written permission from property owner before storing traffic control devices on private property.
2.Crashworthy traffic control devices moved with a barrel mover or similar equipment may be relocated to the hard surface shoulder within 1 ft of the outer edge of shoulder if they will be used for traffic control within 48 hours of the daily work stoppage and are not required for immediate traffic control.
3.Cover post mounted signs completely with an opaque and durable covering when the signs are not applicable.
F.Cover or remove non- applicable work zone signs.
3.3 Arrow Board
A.May substitute Type C units for Type B units. Refer to the TC Series Standard Drawings .
B.Do not substitute Type B units for Type C units.
C.Remove Arrow Board from the site of work when not needed for the control of traffic within a four -hour period.
3.4 Traffic Signals
A.Use uniformed police officer when construction activities are impacting an operating signalized intersection.
B.Use of flaggers at traffic signals permitted when the signals have been turned to red flash mode or are inoperable. Signal change over is not considered an i noperable signal .
1.Control e ach approach by separate flaggers.
a.Flaggers can control only two lanes of approach traffic . 1) Third lane control permitted when left or right turn bays present.
C.The Department will make all changes to timing, phasing, detection, or any other settings in the signal controller for permanent traffic signal s.
1.Notify the Engineer at least 72 hours in advance of any needed changes.
D.Maintain at least two signal heads for the primary movement at a signalized intersection on all approaches.
E.Temporary Traffic Signals
1.Span Wire Signals
a.Use only for durations greater than 30 days, unless needed for: 1) Signal head placement. 2) Number of signal heads for desired movements and phases.
b.Do not attach span wire to existing signal poles or luminaire poles.
c.Refer to SL Series Standard Drawings for clearance and signal head requirements.
2.Temporary Portable Traffic Signal System (TPTSS)
a.Limit use of TPTSS to a maximum of 30 days.
b.Position at least one signal head within the dimensions of each travel lane.
c.Left turn phases are not allowed while using TPTSS.
d.Maintain at least 2 feet of shy distance from the travel shoulder line and edge of any TPTSS equipment.
e.Maintain appropriate channelization around TPTSS equipment according to channelization for arrow boards in TC Series Standard Drawings.
f.Setup each Controller Unit (CU) within the allowable communication range of each other.
g.Setup, maintenance, and operation of TPTSS during construction is the responsibility of the contractor.
3.5 Construction Zone Speed Limit Requirements
A.Use approv ed traffic slow down for regulatory and advisory speed reductions.
1.Use speed reductions only during approved times and areas.
2.Restore preconstruction regulatory speed limit at locations where traffic is not being impacted by work activities.
3.Refer to TC S eries Standard Drawings.
3.6 Traffic Slow Down
A.Obtain approval from the Department and law enforcement at least 48 hours before slow down.
B.Use a Highway Patrol Trooper , or other law enforcement officer , in a marked vehicle with overhead flashing lights to conduct the slow down .
C.Use the officer in the marked vehicle to slow down one or two lanes. 1. Use, in any combination either, contractor -supplied vehicles equipped with overhead amber flashing lights or additional officers in marked vehicles at the rate of one vehicle per lane thereafter for all lanes of the highway to affect the traffic slow down.
D.Additional vehicles as described in this article may be used in the traffic slow down to supplement the law enforcement vehicle when required by the officer.
E.The duration of any traffic slowdown is not to exceed five minutes.
3.7 Temporary Portable Rumble Strips (Tprs)
A.Space and locate TPRS according to TC Series Standard Drawings.
B.Clean road surface with broom or blower to remove all gravel, sand, dust, or other debris.
C.Assemble modular pieces into strips that match the width of the travel lane as closely as possible.
1.Follow manufacturer’s recommendations so that pieces are properly interlocked.
D.Place TPRS perpendicular to traffic and centered in lane.
1.Follow manufacturer’s recommendations and TC series standard drawings for installation and product orientation.
2.Do not glue, nail, or otherwise affix TPRS to the road surface.
E.Place TPRS at the same time as other traffic control devices, prior to work taking place. 1. Maintain the TPRS in proper condition, alignment, spacing, and location.
a.Adjust TPRS when any one rumble strip becomes skewed by a distance of 3 ft or more . 1) Skew distance is the distance parallel to direction of travel between the ends of the strip.
b.Adjust the TPRS if the parallel distance between the individual rumble strips decreases by 5 ft or more.
c.Temporary paint marks may be placed to give reference of original locations.
d.Make adjustments to TPRS as often as necessary during working hours, but at least during each traffic control inspection. 1) Adjustments to TPRS must be made within 30 minutes of discovery or notification of misalignment.
e.Remove TPRS during non- working hours.
f.Implement a Traffic Slow Down if necessary to enter the travel lanes to deploy or reset TPRS.
F.Do not use TPRS during snow events, or at temperatures outside of the manufacturer’s recommendations.
3.8 Lane Closures
A.Notify the Engineer and the UDOT Traffic Operations Center in advance of every lane closure.
1.Provide notification:
a.As soon as it is known that a lane closure is necessary to execute the work, but not less than 72 hours before the closure begins.
b.As soon as practical when the schedule, location, or need for an upcoming lane closure arises or changes. 1) Notify the Engineer immediately by phone call, by text message or by email .
c.Send information to the UDOT Traffic Operations Center by email at tc -controlroom@utah.gov .
2.Include at least the following:
a.The route,
b.The beginning and ending mileposts or mile markers,
c.Number of lanes to be closed,
d.Direction of the closure,
e.The date and time of the beginning of closure, and
f.The date and time of the ending of the closure
B.Enter lane closure information into the UDOT Traffic Lane Closure system via the UDOT Traffic website before lane closure begins .
1.Contact the Control Room Manager at tc -controlroom@utah.gov to obtai n access to the UDOT Traffic Lane Closure system.
2.Include Traffic Control Maintainer contact information.
3.Make r equest s for the use of overhead VMS at least 72 hours before lane closure begins .
a.Send request to tc-controlroom@utah.gov .
C.Provide real -time confirmation of every lane closure on the state routes listed in Table 1, and subsequent lane reopening, by calling the UDOT Traffic Operations Center at 801- 887-3700.
1.Begin Lane Closure: Confirm lane closure details 30 to 45 minutes before placing the first traffic control device in the travel lane.
2.End Lane Closure: Confirm lane reopening 30 to 45 minutes before removing the last traffic control device in the lane. Table 1 State Routes Requiring Real Time Lane Closure Confirmation All interstates (I -15, I-70, I-80, I-84, I-215) US-6 (East of I -15) SR-30 (I-15 to Logan) SR-36 (I-80 to Tooele) SR-67 SR-68 SR-85 SR-154 SR-179 SR-194 SR-201 SR-224 SR-248 US-40 US-89 (Davis, Weber, Cache, Rich and Box Elder Counties) US-91 (I-15 to Logan) US-189 US-191 (Moab to I -70)
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 177–194 of 1,331.