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6G.20 of the DE MUTCD . Mark and protect the drop -off hazard with temporary barriers,

DE · 2025 Standard SpecificationsBook pages 434–438View official source ↗

TEMPORARY TRAFFIC CONTROL – GENERAL

424 801.3.2 Notifications to the Engineer.

A.Notification to the engineer for road closures and detours.

1.Submit notification no less than 14 calendar days before the start of detours and road closures.

2.Obtain the approval of the chief traffic engineer, or designee, a minimum of 48 hours in advance

of proposed restrictions beyond those specified in the contract.

B.Loop detectors at signalized intersections.

1.Submit a schedule 7 calendar days in advance of the proposed start date of work. Obtain

engineer approval before the start of work.

2.Notify the Transportation Management Center (TMC) 48 -hours in advance of cutting a loop

detector and immediately notify the TMC after reinstalling the loop detector.

C.Written notice to property owners, businesses, and residents.

1.Provide written notice 48 -hours in advance of the start of construction work including the

following:

a.The scope of work, working hours, anticipated start and completion dates, and a summary of

construction activities that might interfere with property access.

b.A schedule and access coordination plan.

c.The contractor’s name, address, and a Department contact phone number.

D.Provide written verification to the engineer that the property owners and residents were notified.

E.Failure to give proper notice may result in suspension of work in accordance with Section 104. 2.D.

F.Before obstructing a fire hydrant, notify the local 911 center and provide the engineer with

written confirmation of the notice. 801.3.3 Pavement Edge Drop -offs and Vertical Differences.

A.At the end of each workday, correct all pavement edge drop -offs and vertical differences, in

accordance with the DE MUTCD .

1.Use TRM to accomplish this work unless the contract specifies an alternate method. Place TRM

in accordance with the applicable sections of this specification.

B.When temporary elimination of a drop -off hazard is not possible, follow the requirements of

Section 6G.20 of the DE MUTCD . Mark and protect the drop -off hazard with temporary barriers, barricades, or warning signs.

C.Use steel plates to cover unprotected open trench areas accessible by vehicular traffic within the

clear zone that will not receive backfill material before the end of the day.

1.Provide and install steel plates in accordance with the Standard Construction Details .

2.Submit steel plate shop drawings prepared and signed by a professional engineer registered in

the State of Delaware when using steel plates larger than those specified in the Standard Construction Details . Obtain approval before starting construction. Ensure that the shop drawings:

a.Show the intended method to brace, sheet, support, or shore the excavation to prevent a

trench failure. TEMPORARY TRAFFIC CONTROL – GENERAL

425 b. Show details of the plating design, the method of fastening the plates, plate thickness, span, bearing, and the method of preventing plate movement.

c.The Department will not allow use of steel plates between November 1 and March 31 ,

without the engineer’s approval. 801.3.4 Temporary Pavement Markings.

A.Apply temporary pavement markings at the end of each day’s operation to all locations that

require permanent pavement markings before returning traffic to unrestricted roadway use.

B.Match temporary pavement markings to the permanent pavement markings shown in the

contract or as directed by the engineer.

1.Maintain retroreflectivity levels in accordance with the applicable temporary pavement marking

Section .

2.Refresh temporary pavement markings as required or as directed by the engineer.

3.Apply temporary pavement markings in accordance with the applicable temporary pavement

marking Section , the DE MUTCD , and DelDOT’s Temporary Pavement Markings Policy of the DE MUTCD , when the contract does not provide a layout for temporary markings.

C.Remove conflicting pavement markings as directed by the engineer in accordance with Section

868. The Department will not allow painting over the conflicting pavement markings unless specifically allowed by the contract.

D.When the contract does not provide existing pavement marking information, before beginning

construction, submit detailed drawings showing the existing elements for each project location. Include lane and shoulder widths, turn lane lengths, locations of stop bars, turn arrows, crosswalks, and railroad crossings in the drawings.

E.The engineer may require changes to the final pavement markings.

801.3.5 Travel Lane and Road Closure Restrictions.

A.The Department will not allow travel lane, turn lane, ramp, or road closures on interstates,

freeways, expressways, or principal arterials during the following holidays, unless otherwise noted in the contract:

1.Christmas Day

2.New Year’s Day

3.Memorial Day

4.Independence Day

5.Labor Day

Thanksgiving Day

7.Special Events

B.Keep lanes open for a period of time that depends on the day of the week that the legal or

observed holiday falls. The following schedule determines the periods of time the lanes must remain open, unless otherwise allowed by the contract: TEMPORARY TRAFFIC CONTROL – GENERAL

426 Table 801.3 -1. Holiday Lane Closure Restrictions by Day of the Week Day of Holiday or Event Time All Lanes Must be Open to Traffic Sunday 12:00 PM Friday through 5:59 AM Monday Monday 12:00 PM Friday through 11:59 PM Monday Tuesday 12:00 PM Monday through 11:59 PM Tuesday Wednesday 12:00 PM Tuesday through 11:59 PM Wednesday Thursday 12:00 PM Wednesday through 11:59 PM Thursday Thursday (Thanksgiving) 6:00 AM Wednesday through 11:59 PM Sunday Friday 12:00 PM Thursday through 5:59 AM Monday Saturday 12:00 PM Friday through 5:59 AM Monday

C.Do not close travel lanes, ramps, or roads within 1 -mile of a designated polling place during the

primary and general elections that fall during an even numbered year.

D.Follow all additional restrictions that may apply as noted in the contract or as directed by the

engineer. 801.3.6 Non -Compliance.

A.The Department will consider failure to comply with the requirements of this section as

justification for suspension of work in accordance with Section 104. 2.D. The Department will continue assessing time charges until the contractor corrects the deficiencies.

B.Non -compliance includes:

1.Failure to correct deficiencies within 24 -hours of written deficiency notices related to temporary

traffic control.

2.Non -compliance with the DE MUTCD or the contract.

3.Unsafe operations.

4.Placement of non -compliant temporary traffic control devices.

801.4Method of Measurement.

The Department will not measure this item.

801.5Basis of Payment.

A.The Department will pay for temporary traffic control at the lump sum contract price. Price and

payment will constitute full compensation for:

1.Maintenance of traffic activities accepted by the engineer;

2.submitting TTCPs;

3.submitting certifications;

4.use of traffic cones;

5.correcting edge drop -offs; and

6.a certified ATSSA traffic control supervisor .

TEMPORARY TRAFFIC CONTROL – GENERAL

427 B. The Department will consider the cost to move temporary traffic control devices in accordance with the TTCPs or as necessary to address safety issues as included in this item.

C.If the contractor does not complete the contract work within the allowable contract time,

including approved time extensions, the Department will hold the contractor responsible for providing and maintaining the necessary temporary traffic control devices required to complete remaining work. The Department will not pay for providing or maintaining traffic control beyond expiration of the contract time.

D.The Department will consider the cost of providing and placing steel plates as incidental to the

construction item.

E.The Department will pay for:

1.Placement of temporary pavement markings with other items on the Contract .

2.Placement of temporary warning signs in accordance with Section 810.

3.Providing and placing TRM in accordance with Section 403.

ITEM DESCRIPTION UNIT 801000 MAINTENANCE OF TRAFFIC LS ARROW BOARDS SECTION 802

428 SECTION 802 — ARROW BOARDS

802.1Description.

This work consists of providing, placing, relocating, and maintenance of portable arrow boards.

802.2Materials.

Not applicable .

802.3Construction.

Use and place arrow boards in accordance with the applicable sections of the DE MUTCD . Provide a trailer in accordance with Title 21 Motor Vehicles of the Delaware Code . Maintain arrow boards in good working order so that the arrow board meets, at a minimum, the “marginal” criteria of the brochure entitled “ Quality Guidelines for Temporary Traffic Control Devices ” in accordance with Section 801.3. Remove arrow boards from the roadway when not in use. Do not store arrow boards along the shoulder or adjacent to the edge of the roadway within the clear zone. 802.3.1 Equipment. Provide solar powered arrow boards with a double pointed arrow configuration capable of displaying a left arrow, a right arrow, a double arrow, or a 4 -corner caution mode. Do not display a sequential chevron. Equip the back panel of arrow boards with 3 ind icator lamps indicating the proper functioning of the board. Provide arrow board types as indicated in the table below: Table 802.3 -1. Arrow Board Minimum Size by Type Arrow Board Type Minimum Size A 48 x 24 inches B 60 x 30 inches C 96 x 48 inches

802.4Method of Measurement.

The Department will measure arrow boards as the number of arrow boards used each day. A day consists of any approved usage within 24 -hours of placing the device. The Department will measure each arrow board only once per 24 -hour period, regardless of how many times the contractor relocates the arrow board within the same project. When the contractor uses an arrow board for part of a day, the Dep artment will measure it as 1 each day.

802.5Basis of Payment.

A.Price and payment constitute full compensation for providing, placing, maintaining, and relocating

arrow boards at the contract unit price for each arrow board per day, including the static arrow (W1 -6) sign, when applicable.

B.The Department will pay for accepted quantities at the contract unit price.

ITEM DESCRIPTION UNIT 802001 ARROW PANELS, TYPE A EA-DY

Source: Delaware Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 434–438 of 779.

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801 — TEMPORARY TRAFFIC CONTROL — GENERAL

80100 0 MAINTENANCE OF TRAFFIC LS