LF_Rockface_Debris_SOW_pkg.pdf

PROJECT SPECIFICATIONS

PMIS 206875

ROCKFACE DEBRIS REMOVAL ON THE NATCHEZ

TRACE PARKWAY

PROJECT AREA

MILEPOST 409 TO MP 441

INDEX OF SPECIFICATIONS

DIVISION 1 - GENERAL REQUIREMENTS

01110 Summary of Work

01599 Traffic and Safety

DIVISION 2 - SITE WORK

02912 Stabilized Shoulder

02921 Seed Fertilizer Mulch

Price Proposal Form

Sheet 1- PMIS 206875 Price Proposal Form

DETAIL SHEETS

Sheet 1-3 FHWA Standard Traffic Control Drawings 635-6, 635-10

SECTION 01110

(Rev. 03/2012)

SUMMARY OF WORK

PART 1 GENERAL

1 .1 DESCRIPTION

A. The section of roadway between MP 409 to MP 441 has several areas with exposed rock faces. Over the years debris has fallen and along the rock face and is encroaching towards the roadway. The purpose of this project is to remove the fallen and loose debris and to reestablish the original ditch line and slopes.

B. Once the trees within the project limits have been removed, light grading shall be required to re-establish the slopes and surfaces along the rock face. Stabilized Shoulder Material per

Section 02912 shall be used to fill any depressions to required slope and grade. Once all areas within the mowing area are graded to re-establish the original slopes and landscape surfaces, the areas that are bare shall be seeded and mulched per the following specification Section

02921. Straw or erosion control blankets will be required in the disturbed/seeded areas.

Drainage inlets, ditches and culverts shall be protected from sedimentation using straw wattles until vegetation is re-established. In areas where the backslope of the ditch cannot be easily determined a grade of 5:1 shall be utilized. The backslope of the ditch shall be extended until it reaches the existing rock face.

C. Care shall be taken when working around existing paved areas, concrete ditches, and inlets.

Any damage to the asphalt, paved ditches, or inlets will require repair or replacement.

D. The smaller loose debris remaining on the rockface will need to be removed with a broom or blower prior to soil stabilization and grassing.

E. The six areas identified will be included in the firm fixed price contract. The project will start at Area 6 and work south toward Area 1. The quantities provided in subsequent sections and on the price proposal form are estimates only. The contractor is responsible for verifying the quantities prior to provided price proposals for the work. The firm fixed price quoted shall include removal of fallen material, removing lose material from the rock face, final grading of the shoulder and ditch, seeding the disturbed areas, and placing straw over the disturbed areas.

The firm fixed price quoted shall also include maintenance of traffic, mobilization and other incidental items required to complete the work.

F. All work will be performed under a single contract.

G. The Parkway will NOT be closed to the public during construction. It is anticipated that this work will involve use of a portion of the roadway in order to load debris into hauling vehicles and remove it from the parkway. The contractor shall utilize shoulder closures or one-lane closures in accordance with

Section 01599 and Federal Highway Administration (FHWA) Standard Drawing numbers 635-6 and 635-

10 (Sheet Numbers TCP1 and TCP 2).

Necessary traffic control personnel and signage for all shoulder, single-lane or full road closures shall be the responsibility of the contractor.

1 .2 LOCATIONS

A. The work is located as follows. The COR will mark the beginning and end of each section in the field prior to start of work.

Area 1: A 440 LF section at Milepost 410.9 on the South side of the Hwy 50 access ramp in Tennessee. The estimated quantity for this area is 17 CY.

Area 2: A 400 LF section at Milepost 410.9 on the North side of the Hwy 50 access ramp in Tennessee. The estimated quantity for this area is 15 CY.

Area 3: A 570 LF section between mileposts 428.05 and 428.2 in Tennessee. The estimated quantity for this area is 64 CY.

Area 4: A 520 LF section between mileposts 428.65 and 428.75 in Tennessee. The estimated quantity for this area is 58 CY.

Area 5: A 570 LF section at Garrison Creek between mileposts 427.1 and 427.5 in

Tennessee. The estimated quantity for this area is 253 CY.

Area 6: A 835 LF section between mileposts 440.9 and 441.1 in Tennessee. The estimated quantity for this area is 174 CY. It is noted that there are some very large boulders within this section, estimated to be between 2 and 5 tons each

1 .3 PERFORMANCE PERIOD:

A. The performance period for this contract shall be 30 working days. A working day shall be considered every day that does not fall on a federal holiday, Saturday, or Sunday. In the case of rain, wet soil, or other weather-related delays, time may be extended. The Contractor may provide documentation as to which days within their Period of Performance time should not be charged due to weather to the COR for Review and Approval.

1 .4 PROJECT RESTRICTIONS: The following restrictions apply to this contract.

Any damage caused by the contractor’s equipment shall be rehabilitated to the original condition or state.

No heavy machinery will be allowed on slopes or beyond mowed areas.

Access routes for the Parkway shall be the closest Parkway access to the area where the contractor is working.

When hauling on National Park Service roads, do not exceed the following load restrictions:

Single Units Gross Vehicle Weight –Lbs.

2 axles 40,000

3 axles 48,000

4 or more axles 52,000

Combination Units

3 axles 57,000

4 axles 62,000

5 or more axles 66,000

Where the ground is saturated with water or during periods of freezing and thawing, the Contracting Officer may impose further load restrictions or suspend hauling. Haul vehicles shall turn around only at intersections and parking areas, not on the Park Road.

Operate loaded vehicles hauling material at speeds not exceeding 40 MPH and spaced at 500-foot minimum intervals. On bridges, speeds shall not exceed 25 MPH and not more than one loaded hauling vehicle shall be allowed on any bridge at one time. Hauling of materials, supplies, and equipment over the park road, other than within the limits of the project, shall not be permitted without prior approval of the Contracting

Officer. Load restrictions on park roads are identical to the state load restrictions with such additional regulations as may be imposed by the Contracting Officer. Vehicles shall not be counted for the purpose of load determination unless they are equipped with brakes. Trucks and other heavy equipment shall be confined to the limits of the project on the park road. Hauling of materials, supplies, and equipment over the park road, other than within the limits of the project, shall not be permitted except as is necessary to perform the required work and the contractor shall be required to haul on non-Parkway roads to the maximum extent possible.

Material shall not be piled on the Parkway shoulders or allowed to accumulate except during hauling operations. All road shoulders shall be kept free of debris and left free of debris at the end of each workday.

Any necessary interruptions in traffic flow shall be minimized at all times. Extra care is required to make sure material along shoulders do not encroach into the roadway at any time.

No unauthorized dumping of the material is acceptable. The contractor is strictly responsible for properly disposing of removed material and shall be liable for any fees or fines associated with improper hauling or disposal.

1 .5 EQUIPMENT

Equipment that is leaking any type fluids shall be repaired immediately or removed from the parkway.

1 .6 INSPECTION – CONTROL OF WORK

A. Normal work hours are from 7:30 AM until 4:00 PM. The contractor may work other hours only with the permission of the Contracting Officer (CO) or his/her designated representative

(COR). Work on Saturdays or Federal Holidays and at night may be performed only with prior consent of the COR. Work on Sundays will not be permitted except in case of emergencies.

B. The CO or COR shall decide all questions which may arise as to the quality or acceptability of materials furnished or work performed and shall decide all questions which may arise as to the interpretation of the plans and specifications and all questions as to the acceptable fulfillment of the terms and provisions of the contract.

C. No work shall be done nor material used without inspection by the contracting officer, and the contractor shall furnish every reasonable facility for ascertaining whether or not the work performed and materials used are in accordance with the requirements and intent of the specifications and contract. Any work done or materials used without inspection by the CO or

COR may be ordered removed and replaced at the contractor's expense. Materials will be inspected and approved as promptly as practicable on delivery at the job site. The work will be inspected as it progresses, but failure to reject any defective work or material shall not in any way prevent later rejection.

D. Shoulder repair will consist of a mix of 50% topsoil and 50% Class 5, Group C Granular

Material per the Mississippi Department of Transportation Standard Specifications for Road and Bridge Construction (MDOT Redbook 2017) Section 703. The shoulder shall begin a maximum of ½” below edge of pavement and consist of an 8% slope away from the roadway.

1 .7 CONSTRUCTION MATERIALS

A. All materials shall be Contractor-furnished.

B. Materials shall be so stored as to ensure the preservation of their quality and fitness for the work.

Stored materials, even though approved before storage, may be inspected prior to their use in the work, and they shall meet the requirements of the specifications at the time it is proposed to use them.

1 .8 PROTECTION AND RESTORATION OF PROPERTY

A. The contractor shall be responsible for the preservation from injury or damage, resulting directly or indirectly from the execution of the work, of all public and private property along and adjacent to the parkway. He shall use every precaution necessary to prevent damage to pipes, conduits, and other underground structures; also, all overhead structures such as wires, cables, etc.; and poles, trees, shrubbery and crops, within or outside of the right-of-way. Any utility lines damaged by the contractor shall be repaired at once at his expense. All trails and roads adjacent to or intersecting the project shall be protected from damage. Contractor must protect curbs and sidewalks from damage. At the completion of the project, bridges and curbs shall be swept clean to remove any loose material or fresh hot mix that was deposited during construction.

B. Cleaning equipment at the end of work day shall only be performed at locations approved by the

Contractor Officer.

1 .9 SANITARY PROVISIONS

The contractor shall provide and maintain in a neat and sanitary condition such accommodations for the use of his employees as required by current OSHA regulations. The contractor shall permit no public nuisances.

END OF SECTION

07/2020 01599-1

TRAFFIC AND SAFETY

SECTION 01599

(Rev. 07/2020)

A. Work under this section consists of the furnishing of all labor, materials, equipment, and signs required by these specifications.

PART 2 PRODUCTS NOT USED

PART 3 EXECUTION

3 .1 PROTECTION OF PUBLIC

A. Flaggers: Where required, the contractor shall furnish two (2) capable, physically and mentally qualified flaggers for maintaining traffic flow during construction operations. The flaggers shall be English speaking. Flaggers shall wear fluorescent orange or green vests and shall be equipped with a standard hand-held warning (Stop/Slow) sign. Flags shall not be allowed for traffic control.

They shall also be equipped with two-way radios that are capable of dependable transmission for one mile.

B. Safety Equipment: All slow moving equipment shall be equipped with slow moving vehicle emblems and high intensity flashing lights. Emblem and flashing lights shall meet OSHA standards.

C. Laws to be Observed: The contractor shall keep fully informed of all federal and state laws, all local laws, ordinances, safety codes, regulations, and all orders and decrees of bodies or tribunals having any jurisdiction or authority, which in any manner affect those engaged or employed on the work, or which in any way affect the conduct of the work. He shall at all times observe and comply with all such laws, ordinances, safety codes, regulations, orders, and decrees; and shall protect and indemnify the Government and its representatives against any claim or liability arising from or based on the violation of any such law, ordinance, safety code, regulation, order, or decree, whether by himself or his employees.

D. Public Convenience and Safety: The contractor shall at all times so conduct his work as to assure the safety and convenience of the general public and the residents along the parkway and to assure the protection of persons and property. Care shall be taken at all times to regulate the operations so as to protect visitors and campers in the park

E. Barricades, Warning Signs, and Other Devices: The contractor shall provide, erect, and maintain all necessary barricades, suitable and sufficient lights, danger signals, signs and other traffic control devices, and shall take all necessary precautions for the protection of the work and safety of the public. Suitable warning signs shall be provided to properly control and direct traffic.

Portable construction traffic control devices shall be relocated after each 3000 foot progression of work. During a lane closure, traffic cones/barrels shall be used to delineate the work area. Utilization of all barricades, traffic delineators, warning signs, lights, temporary signals, flagmen and pilot car

07/2020 01599-2 operators and equipment, and other protective devices shall be in accordance with the current edition, Part VI of the Manual on Uniform Traffic Control Devices (MUTCD) for Streets and Highways, published by the U.S. Government Printing Office. Part VI of the manual may be examined by prospective bidders at Natchez Trace Parkway Headquarters, Tupelo, Mississippi. Signing/flagging details, traffic control plans and/or other detailed drawings are included with these specifications.

The contractor shall furnish, erect, maintain, and remove, or otherwise as directed by the COR, all signs shown within the contract documents.

F. “DO NOT PASS”, “NO PASSING ZONE” and “PASS WITH CARE” signs shall be installed at the appropriate locations before any pavement markings are covered by paving operations (when applicable).

PART 4 MEASUREMENT AND PAYMENT

4 .1 Traffic & Safety

A. No separate payment will be made. Work is considered part of the Statement of Work for PMIS

206875 Rockface Debris Removal on the Natchez Trace Parkway. Payment for this work along with all other work described in the Statement of Work shall be made per the firm fixed price quoted.

01/2020 02912-1

STABILIZED SHOULDER

SECTION 02912

A. The work of this section consists of furnishing, mixing, and placing aggregate and topsoil and adding of fertilizer, mulch, and seed to establish a stabilized pavement shoulder. This work shall be completed where the pavement ends and natural ground/shoulder or vegetated shoulder begins. Within the maintenance lot, the pavement, in some areas, ends to a gravel/stone surface; stabilized shoulder material shall not be required in those areas.

PART 2 PRODUCTS

2 .1 AGGREGATE

A. Clean, hard, durable particles of crushed gravel, or crushed stone having a maximum percentage of wear of

50 at 500 revolutions, as determined by AASHTO T96-77 and meeting the following gradation:

Sieve Designation

AASHTO M92-82

Percent Passing Square Mesh

Sieves AASHTO T11-82 and T27-82

1-1/2-inch 100

1-inch 90 -100

1/2-inch 15 - 35

3/8-inch 0 - 15

No. 4 0 - 5

2 .2 TOPSOIL

A. Natural, friable, loamy soil without admixture of subsoil or other foreign material; free of roots, lumps, clay, stones larger than 2 inches, noxious weeds, or other litter; free draining; and evidencing support of healthy growth of grasses, crops, or other vegetation.

2 .3 CLAY GRAVEL

A. Class 5, Group C

2 .4 SEED, FERTILIZER, AND MULCH

A. Section 02921.

PART 3 EXECUTION

3 .1 PREPARATION OF SUBGRADE

01/2020 02912-2

A. Prior to placing aggregate topsoil mixture, cut shoulder grass to a height of 1 inch or less where the aggregate-topsoil mixture is to be placed and lightly scarify or disk surface of shoulder to a depth of at least 2 inch.

3 .2 AGGREGATE AND TOPSOIL MIXTURE

A. Percentage of mixture shall be a mix of 50% topsoil and 50% Class 5, Group C Granular Material (per

MDOT Mississippi Standard Specification for Road and Bridge Construction).

3 .3 MIXED-IN-PLACE METHOD

A. Mixed-in-place method shall not be allowed. Aggregate Topsoil Course Mixture to be mixed offsite using method described in Section 02912, Subsection 3.4.

3 .4 CENTRAL PLANT-MIXED METHOD

A. Mix topsoil, clay gravel and aggregate in a single or twin pugmill or other mixer capable of producing a constant, uniform mixture. Add water during mixing to produce a mixture with proper moisture content for desired compaction.

B. Handle and transport material to prevent segregation and loss of moisture.

C. Spread mixture in uniform layers to achieve indicated thickness.

3 .5 COMPACTION

A. Immediately after spreading, compact mixture to 90 percent density, as determined by AASHTO T99-81, Method C, by rolling with a three-wheeled or tandem roller weighing a minimum of 10 tons.

3 .6 FINISHING

A. Continue rolling, blading, or dragging until a smooth, dense, uniformly textured surface is obtained. Finish shoulders to a smooth surface in accordance with line, grade, and cross section shown. Rake and remove all stones larger than 2 inches, clods, and other debris. Loosen final surface to depth of 1 inch by disking or harrowing before seeding.

B. When finished, the shoulder shall begin a maximum of ½” below edge of pavement and consist of an 8% slope away from the pavement.

3 .7 SEEDING, FERTILIZING, AND MULCHING

A. Section 02921.

PART 4 MEASUREMENT AND PAYMENT

4 .1 STABILIZED SHOULDER

A. No separate payment will be made. Work is considered part of the Statement of Work for PMIS 206875

Rockface Debris Removal on the Natchez Trace Parkway. Payment for this work along with all other work described in the Statement of Work shall be made per the firm fixed price quoted.

01/2020 02912-1

SEEDING, FERTILIZING, AND MULCHING

SECTION 02921

A. The work of this section consists of seeding, fertilizing, and mulching landscapes with the

Natchez Trace Parkway.

1 .2 SUBMITTALS

A. One-cubic-foot sample of mulch, if commercial mulch is used.

1 .3 PRODUCT HANDLING

A. Seed: Deliver in acceptable condition in original, unopened containers.

B. Fertilizer: Deliver in original, unopened containers with analysis, type, and trade name attached.

1 .4 PROJECT CONDITIONS

A. Seed during recommended planting period or as approved.

B. Do not seed during windy weather or when the ground is excessively wet, frozen, snow covered, extremely dry, cloddy, hard pan, or not friable.

PART 2 PRODUCTS

2 .1 FERTILIZER

A. CID A-A-1909, Type I, class 2, with 50 percent of the nitrogen in slowly available form, use a fertilizer with 10-10-10. To be applied at a rate of 500 lbs per acre.

2 .2 SEED

A. A mixture of the following seeds, planted at the rate shown per acre.

Name of Seed

September 1st Through

February 28th

LBS/ACRE

March 1st Through

August 31st

LBS/ACRE

Bermudagrass, common (unhulled) 20 30

White Clover 25 30

K31 – Tall Fescue 40 25

Annual Ryegrass 15 15

TOTAL SEED 100 100

2 .3 WATER

A. Clean, fresh, free from harmful substances.

01/2020 02912-2

2 .4 MULCH

A. Hydraulic mulch consisting of 100% postconsumer recovered content paper or 100% total recovered content wood/paper, which conforms to the requirements of EPA Comprehensive

Procurement Guidelines (CPG), shall be used.

PART 3 EXECUTION

3 .1 BED PREPARATION

A. Grade the seeding area to line and grade. Remove weeds, sticks, stones 2 inches (50 millimeters) in diameter and larger, and other debris detrimental to application, growth, or maintenance of the turf.

B. Apply agricultural limestone or lime at a rate of 3000-4000 pounds per acre to bring the soil pH to

5.5. Follow standard soil testing procedures to determine rate of limestone or lime.

C. Cultivate the seeding area to a minimum depth of 4 inches (100 millimeters) and prepare a firm, but friable seedbed before seeding.

3 .2 FERTILIZING. Apply Fertilizer by the following methods:

(A) Dry method. Incorporate the fertilizer into the upper portion of the seedbed before seeding;

or

(B) Hydraulic method. Add fertilizer to the slurry and mix before adding seed. Apply the seed and fertilizer in one application.

3 .3 SEEDING. Apply Seed by the following methods:

(A) Dry method. Apply the seed with approved power driven seeders, drills, or other mechanical equipment. Hand-operated seeding methods are satisfactory on areas inaccessible to mechanical equipment; or

(B) Hydraulic method. Use hydraulic-type equipment capable of providing a uniform application using water as the carrying agent. Add a tracer material consisting of either wood or grass cellulose fiber mulch to the water. Apply the tracer material at a rate of 400 pounds per acre (450 kilograms per hectare) to provide visible evidence of uniform application. Add the seed to the water slurry no more than 30 minutes before application. Seed by hand areas inaccessible to seeding equipment.

3 .4 MULCHING. If wood chips are used, do not import without approval from the CO. Apply mulch within 48 hours after seeding by the following methods:

(A) Dry method. Spread mulch material, except wood and grass cellulose fibers, by a mulch spreader utilizing forced air to blow the mulch material onto the seeded area. Apply straw or wood cellulose fiber mulch uniformly at a rate of 5000 pounds per acre (½- to 1-inch mat). Anchor the mulch material with an approved tackifier or approved mechanical method. Do not mark or deface structures, pavements, utilities, or plant growth with tackifier; or

(B) Hydraulic method. Apply mulch in a separate application from the seed using hydraulic-type equipment according to Subsection 3.3(B). Apply wood cellulose fiber mulch uniformly at a rate of 2000 pounds per acre (½- to 1-inch mat). Anchor by light disking, cultipacking, walking down with tractor or by use of jute netting.

01/2020 02912-3

(C) Mulch by hand areas inaccessible to mulching equipment.

3 .5 WATERING

A. After mulching, water with a mist spray soaking ground to minimum depth of 2 inches. Water as necessary until grass is established.

3 .6 CLEAN-UP, PROTECTING AND CARING FOR SEEDED AREAS

Upon completion of work, remove debris and leave area in clean, acceptable condition. Protect and care for seeded areas including watering when needed. Repair or apply supplemental applications of seed, mulch, fertilizer, and water as many times as needed until turf is established or final acceptance.

3 .7 ACCEPTANCE

A. The project will not be accepted, until a satisfactory stand of grass is established.

PART 4 MEASUREMENT AND PAYMENT

4 .1 SEEDING, FERTILIZING, AND MULCHING FOR STABILIZED SHOULDER

A. No separate payment will be made. Work is considered part of the Statement of Work for PMIS

206875 Rockface Debris Removal on the Natchez Trace Parkway. Payment for this work along with all other work described in the Statement of Work shall be made per the firm fixed price quoted.

Base Price: (MP 409 - 441) Consists of: Removal of approx. 581 Tons of rockface debris

Re-establishment of Landscape Site Restoration where needed, minor/light grading, filling holes/depressions, seeding and mulching

Traffic Control: Shoulder Closures, One-lane Closures

TOTAL PROPOSED PRICE:

PMIS 206875 Rockface Debris Removal on the Natchez Trace Parkway

March 2021

PRICE PROPOSAL FORM

GENERAL NOTES:

1. The above quantities are estimates only and the contractor is responsible for visiting the site to verify extent of work to be completed according to the Statement of Work prior to providing a quote.

2. Period of Performance is 60 Working Days total.

3. This is a firm fixed price contract. The total proposed price quoted above shall be for all work described herein including any neccessary materials and/or equipment required to complete all units of the work.

4. Provide a "Unit Price" for each item listed. Proposals with blank unit prices will be considered irregular and non-responsive.

5. In case of descrepancies, the final contract firm-fixed price shall be based on the "Unit Price." Therefore, the "Total Proprosed Price" shall be sum of the "Total" column based on the "Unit Price" per unit quantity for all items listed.

ITEM DESCRIPTION QUANTITY UNIT PRICE TOTAL

1 Mobilization 1 LS

2 AREA 1: MP 410.9 South Side of HWY 50 Ramp (440LF) 17 CY

3 AREA 2: MP 410.9 North Side of HWY 50 Ramp (400LF) 15 CY

4 AREA 3: MP 428.05- MP 428.2 (570LF) 64 CY

5 AREA 4: MP 428.65- MP 428.75 (520 LF) 58 CY

6 AREA 5: MP 427.1- MP 427.5 (570LF) 253 CY

7 AREA 6: MP 440.9- MP 441.1 (835LF) 174 CY

6 Re-establishment of Landscape 1 LS

7 Traffic Control 1 LS

LIEPERS FORK District MP 409-441

PMIS # 206875

NO SCALE

Traffic flow

Traffic flow

W20-1

See Note 4

W20-7W20-4

G20-2

See Note 4

(See Length and

Spacing Table)

(optional)

WORK SPACE (optional)(optional)

W13-1P

(optional)

W16-2P

(optional)

1.

2.

3.

4.

5.

6.

7.

Signs are shown for one direction of travel only. Place devices similar to those depicted for the opposite direction of travel.

Final location and spacing of signs and devices may be changed to fit field conditions as approved by the CO.

For pilot car operation, mount the PILOT CAR FOLLOW ME (G20-4) sign at a conspicuous location on the rear of vehicle. Prominently display the name of the contractor on the pilot car.

If closure is completely within the project limits, eliminate the "ROAD

WORK AHEAD" (W20-1) and "END ROAD WORK" (G20-2) signs.

For night time flagging operation, provide floodlighting at flagger stations.

For project specific minimum width, refer to the Special Contract

Requirements, Section 156.

Do not allow equipment, materials, or vehicles to be parked or stored in the buffer space.

LENGTH AND SPACING TABLE

APPROACH

SPEED* TAPER

AREA

BUFFER

SPACE

WORK

SPACE

CHANNELIZING DEVICE

* Approach speed based on the regulatory posted speed, not the advisory speed.

SIGN SPACING TABLE

ROAD TYPE

DISTANCE BETWEEN

A B C

BUFFER SPACE

LENGTH

NOTE:

Expressway / Freeway

WORK

ROAD

AHEAD

ONE LANE

ROAD

AHEAD

xx

MPH

xxx

FEET

ROAD WORK

END

ATAPER AREABUFFER SPACEVARIABLEBUFFER SPACETAPER AREAABC

(See Length and Spacing Table)ADVANCE WARNING AREA (See Sign Spacing Table) TERMINATION AREA

Device spacing

BUFFER SPACE

Channelizing devices

Flagger location

Flagger location

635-6

STANDARD APPROVED FOR USE 6/2005

DRAFT: 8/2013

REVISED:

MPH FEET

Rural greater than 50 MPH

Urban and Rural 35 MPH to 50 MPH

Urban and Rural 30 MPH and less

SIGNS IN FEET

(WITH FLAGGERS)

SINGLE LANE CLOSURE LAYOUT

TEMPORARY TRAFFIC CONTROL

SPACING IN FEET

50' - 100' 50' - 100' (optional)

STATE PROJECT

NUMBER

SHEET

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

P

M

A u g u s t

U

S C c m y fi le s p w p r o d u c ti o n d m s S td

.d g n

FEDERAL LANDS HIGHWAY

U.S. CUSTOMARY STANDARD

STANDARD

See Note 6

10' min.

jglasz Text Box

GENERAL NOTES:

1. END ROAD WORK SIGN NOT REQUIRED FOR WORK SPACES LESS THAN 1000LF IN LENGTH.

2. PILOT CAR NOT REQUIRED.

3. CHANNELIZING DEVICES (CONES/BARRELS) NOT REQUIRED UNLESS OTHERWISE DIRECTED BY COR.

NO SCALE

limit or 85 percentile speed prior

Traffic flow

Traffic flow

Shoulder taper formula:

Where:

L =

L =

Minimum length of taper

* Approach speed based on the regulatory posted speed, not the advisory speed.

**Lengthen taper as needed to provide minimum of three channelizing devices in taper at required spacing.

L =

W =

S =

LENGTH AND SPACING TABLE

APPROACH

SPEED* TAPER

AREA

BUFFER

SPACE

WORK

SPACE

CHANNELIZING DEVICE

WS

WS²

SIGN SPACING TABLE

ROAD TYPE

DISTANCE BETWEEN

A B C

ROAD WORK

END

ROAD WORK

END

WORK

ROAD

AHEAD

WORK

ROAD

AHEAD

MINIMUM TAPER LENGTH**

BUFFER SPACE

LENGTH

NOTE:

Expressway / Freeway

SHOULDER

WORK

xx

MPH

635-10

STANDARD APPROVED FOR USE 6/2005

DRAFT: 8/2013

REVISED:

MPH

FEET

for S ≤ 40 MPH for S ≥ 45 MPH

Width of offset in feet

Numerical value of posted speed to work in miles per hour

FEET

SPACING IN FEET

Rural greater than 50 MPH

Urban and Rural 35 MPH to 50 MPH

Urban and Rural 30 MPH and less

SIGNS IN FEET

STATE PROJECT

NUMBER

SHEET

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

M u g u s t

U

S C c m y fi le s p w p r o d u c ti o n d m s S td

.d g n

FEDERAL LANDS HIGHWAY

U.S. CUSTOMARY STANDARD

STANDARD

SHOULDER CLOSURE LAYOUT

TEMPORARY TRAFFIC CONTROL

See Note 2

10' min.

W21-5W20-1

See Note 3

G20-2

See Note 3

W20-1

See Note 3

G20-2

See Note 3

(See Length and

Spacing Table)

(optional) TERMINATION AREA

W13-1P

(optional)

1.

2.

3.

4.

Final location and spacing of signs and devices may be changed to fit field conditions as approved by the CO.

For project specific minimum width, refer to Special

Contract Requirements, Section 156.

If shoulder closure is completely within the project limits, eliminate the "ROAD WORK AHEAD" (W20-1) and "END

ROAD WORK" (G20-2) signs.

Do not allow equipment, materials, or vehicles to be parked or stored in the buffer space.

Channelizing devices

W

A Device spacing

AVARIABLE WORK SPACEBUFFER SPACETAPER AREAAB

(See Length and Spacing Table)ADVANCE WARNING AREA (See Sign Spacing Table) jglasz Text Box

GENERAL NOTES:

1. END ROAD WORK SIGN NOT REQUIRED FOR WORK SPACES LESS THAN 1000LF IN LENGTH.

2. PILOT CAR NOT REQUIRED.

3. CHANNELIZING DEVICES (CONES/BARRELS) NOT REQUIRED UNLESS OTHERWISE DIRECTED BY COR.