Burlington STP 2035(15) C/2 & PLAT(3) Advertised February 10, … · 2021. 3. 5. · Burlington STP 2035(15) C/2 & PLAT(3) Advertised February 10, 2021 Page 112 Revised March 5, 2021

Burlington STP 2035(15) C/2 & PLAT(3) Advertised February 10, 2021

Page 4

Revised March 5, 2021

May 21, 2021 to May 23, 2021 inclusive or,

June 18, 2021 to June 20, 2021 inclusive or,

July 9, 2021 to July 11, 2021 inclusive or,

July 23, 2021 to July 25, 2021 inclusive or,

August 20, 2021 to August 22, 2021 inclusive.

During the weekend RCP, the Contractor will be allowed to work 24 hours per day, over

the weekend. Night work will be allowed during the RCP. See No. 9 NOTICE TO

BIDDERS – NIGHT WORK and No. 10 NOTICE TO BIDDERS – NIGHT WORK

NOISE RESTRICTIONS for additional information and requirements.

(b) Extended Closure. An extended RCP in which the road can be closed to vehicular traffic

but must remain open to pedestrian traffic will also be allowed. This extended RCP

begins at 6:00 AM on Monday, August 23, 2021 and ends at 12:00 PM (noon) on Friday

September 17, 2021. During this period, pedestrian traffic must be maintained on either

the northern or southern existing or newly constructed sidewalks or a temporary

pedestrian detour must be provided by the Contractor to accommodate pedestrian traffic

as detailed on the Plans.

(c) Confirmation Letter. The Contractor shall submit to the VTrans Construction Section for

review and approval a letter specifying the BEGIN CONSTRUCTION DATE for the

Weekend and Extended Roadway Closures. This notification shall be received by the

Engineer a minimum of twenty-one (21) calendar days prior to the BEGIN

CONSTRUCTION DATE indicated in the letter.

(d) Meetings. There shall be a pre-closure meeting held on site with the Contractor’s

Superintendent, Contractor’s Project Manager, the Engineer, the Project Manager, the

City of Burlington DPW, Parks, Recreation, and Waterfront, Fire Department, and Police

Department to discuss durations of work, types of night work, work sequencing, etc. The

Contractor shall be responsible for setting this meeting up and making appropriate

contacts. This meeting shall be held a minimum of fourteen (14) days prior to each

(Weekends and Extended) RCP.

9. NOTICE TO BIDDERS – PENDING PERMIT. The Contractor is hereby notified that

approval of the AT&T Encroachment permit is currently pending. The Agency will not

award this Project until this permit has been approved. It is expected that the project will be

built as shown in the Contract. In the event that future conditions of the permit require work

to be added to the Contract, the work will be reimbursed to the Contractor as Extra Work

per Subsection 109.06.


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14. NOTICE TO BIDDERS – DISADVANTAGED BUSINESS ENTERPRISE REQUIREMENTS.

The Contractor is hereby notified that there are Disadvantaged Business Enterprise (DBE)

participation requirements for the Burlington PLAT(3) contract. The Burlington PLAT(3)

Contract has a DBE participation goal of one (1) percent. Each bidder must complete and report

their participation, or lack thereof, through forms CA-161 and CA 162 and email Stacy L. Andre

at [email protected]. See form CA-160 for guidance and information. All necessary forms

must be received by 9:00 AM on March 512, 2021.

15. NOTICE TO BIDDERS – DISADVANTAGED BUSINESS ENTERPRISE TITLE VI CIVIL

RIGHTS ACT OF 1964. The Recipient, in accordance with the provisions of Title VI of the

Civil Rights Act of 1964 (78 Stat. 252, 42 U.S.C. §§ 2000d to 2000d-4) and the Regulations,

hereby notifies all bidders that it will affirmatively ensure that any contract entered into pursuant

to this advertisement, disadvantaged business enterprises will be afforded full and fair

opportunity to submit bids in response to this invitation and will not be discriminated against on

the grounds of race, color, or national origin in consideration for an award.”


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16. NOTICE TO BIDDERS – OTHER SPECIFICATIONS AND CONTRACT REQUIREMENTS.

US DOT Standard Title VI/Non-Discrimination Assurances DOT Order No. 1050.2A and

Appendices A and E

Standard Federal EEO Specifications

Workers’ Compensation; State Contracts Compliance Requirement

General Special Provisions dated January 26, 2021

VTrans COVID-19 Pandemic Temporary Guidelines for the QAP dated May 18, 2020

Bulletin 3.5 Attachment C: Standard State Provisions for Contracts and Grants

Vermont Minimum Labor & Truck Rates

Disadvantaged Business Enterprise (DBE) Policy Contract Requirements

U.S. Department of Labor Davis-Bacon Wage Rates

Contractor’s EEO Certification Form

Debarment & Non-Collusion Affidavit

Required Contract Provisions for Federal-Aid Construction

Certification for Federal-Aid Contracts

Public Interest Finding (PIF) for Platform Light Fixtures, dated January 13, 2021

AT&T Encroachment Permit – Pending, dated March 3, 2021

Vermont Determination of Public Interest Finding (VDPIF) Rail-Highway Crossing Active

Warning System, dated November 23, 2020

Burlington STP 2035(15) C/2 and Burlington PLAT(3)

College Street to Maple Street Rail Development Project Soil Management Plan (SMP) –

dated November 11, 2020

Burlington STP 2035(15) C/2(SJ 303)

Burlington Greenway Rehabilitation – Phase 3 Corrective Action Plan Amendment (CAP

Amendment) – dated November 24, 2020

Burlington Greenway Rehabilitation – Phase 3 (Revision 3) Corrective Action Plan (CAP)

– dated October 2, 2019

Vermont DEC Operational Stormwater Permit No. 7213-INDS.2, dated July 8, 2019

Vermont Rail System Procedures for the Installation, Adjustment, Maintenance, and Inspection of

CWR – Effective February 6, 2020

17. NOTICE TO BIDDERS – DAVIS-BACON. U.S. Department of Labor Davis-Bacon wage rates

are applicable to this Contract. Copies of the applicable rates are included in this proposal.

In the included wage rates, the requirements of Executive Order 13658 do not apply to this

Contract.


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(a) All AFAD applications shall meet the requirements of the applicable sections of the current

edition of the Manual on Uniform Traffic Control Devices (MUTCD).

(b) All AFAD applications shall be in accordance with NCHRP Report 350 or the MASH for

the applicable test level and device weight. Documentation of the crashworthiness of the

device shall be submitted to the Engineer for approval prior to use on the project.

(c) AFAD applications shall always be controlled by a flagger who has been trained in the

operation of the AFAD and who meets the requirements of Section 630. The flagger shall

not flag traffic and operate an AFAD at the same time.

(d) Should an AFAD malfunction or otherwise not function as intended they shall be replaced

by another AFAD or flagger(s) or work shall cease and the roadway shall be opened to

unrestricted traffic flow immediately.

(e) Each AFAD will be considered equivalent to one flagger and will be measured and paid

for on an hourly basis under Item 630.15 Flaggers. One hour of AFAD use shall be paid

for as one hour of flagging.

(f) Flaggers will only be measured for payment when actually performing flagging duties.

Flaggers controlling AFADs but not actually flagging will not be measured for payment,

but will be considered incidental to the Contract lump sum price for Item 641.10 Traffic

Control, or Item 641.11 Traffic Control, All-Inclusive, as applicable.

(g) The use of AFADs may be suspended at the discretion of the Engineer.

31. NOTICE TO BIDDERS – PERFORMANCE GRADED ASPHALT BINDER. All permanent

pavement on both main line and side streets is required to use the PG binder grade specified

elsewhere in the Plans and Specifications. All pavement used for driveways or surface preparation,

regardless of the method of placement, will be allowed to use either the binder grade specified

elsewhere, or PG 58-28 binder. There will be no additional compensation allowed for using either

binder grade.

32. NOTICE TO BIDDERS – CITY OF BURLINGTON EXCAVATION PERMIT. The Contractor

shall be responsible to obtain an Excavation permit from the City of Burlington for the work

associated with construction of Burlington STP 2035(15) C/2(SJ303). The City of Burlington

will waive any fee associated with this permit for Burlington STP 2035(15) C/2(SJ 303).

Contact Caleb Manna, Excavation Inspector, Department of Public Works Inspection Services

[Tel. (802)-865-7562], [email protected].


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33. NOTICE TO BIDDERS – CITY OF BURLINGTON EPSC PERMIT. The Contractor shall be

responsible to obtain an EPSC permit from the City of Burlington for the work associated with

construction of Burlington STP 2035(15) C/2(SJ303). The City of Burlington will waive any fee

associated with this permit for Burlington STP 2035(15) C/2(SJ 303). Contact James Sherrard,

Stormwater Program Coordinator Department of Water Resources [Tel. (802)-863-4501],

[email protected].

34. NOTICE TO BIDDERS – COMMODITY PRICE ADJUSTMENTS.

(a) Asphalt Cement Price Adjustment. When Item 406.50 is included in the Contract, asphalt

cement price adjustment will be performed according to the requirements of Section 406

for all asphalt cement and emulsified asphalt incorporated into the work, including that

incorporated under Project Special Provision Pay Items. The Index Price for asphalt cement

for this Contract is $461.00 per ton.

(b) Fuel Price Adjustment. When Item 690.50 is included in the Contract, fuel price adjustment

will be performed according to the requirements of Section 690 for the items specified

therein, and for any Special Provision items specified in Table 1 below. The Index Price of

diesel fuel for this Contract is $2.67 per gallon.

TABLE 1 – SPECIAL PROVISION ITEMS SUBJECT TO FUEL PRICE ADJUSTMENT

Special Provision Pay Items Subject to Adjustment: Using the Tabulated Fuel Usage

Factor and Quantity Threshold for:

Pay Item Name Item No. Work Category

N/A N/A N/A

35. NOTICE TO BIDDERS – BURLINGTON STP 2035(28), STP 2035(27) & VTRY(50)

SIGNAL PLANS. The Contractor is hereby notified that draft signal plans for the

Burlington STP 2035(28), STP 2035(27) and VTRY(50) projects are available from the

Contract Administration FTP site and the “Advertised Projects” website. These plans are

being provided during bid solicitation period for information only. The Agency reserves the

right to make changes to these plans without notice to bidders on these projects..


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REMOVE AND RESET RAILROAD TRACKS

1. DESCRIPTION. This work shall consist of removing and resetting existing rail tracks at locations

shown in the Contract Documents or as directed by the Engineer. The work shall include furnishing

all labor, materials, and equipment for removing and resetting the existing rail tracks, including

but not limited to re-installing existing rail anchors, joint bars, and tie plates. The Contractor shall

supply new joint bar bolts, washers, nuts, and track spikes; and joint bars and rail anchors if the

existing hardware is not suitable for re-installation.

2. MATERIALS. Unless otherwise specified, all new materials shall conform to the requirements of

the AREMA Manual as follows:

(a) Rail, joint bars, track bolts, nuts, and washers shall meet the requirements of Chapter 4 -

Rail, Part 1 "Design" and Part 2 "Specifications". The Contractor shall supply all new track

bolts, nuts, and washers for the joint bars.

(b) Tie plates shall meet the requirements of Chapter 5, Part 1 “Tie Plates”.

(c) Cut track spikes shall meet the requirements of Chapter 5 Track, Part 2 "Track Spikes" for

High-Carbon Steel Track Spikes, 6 in. length, 5/8 inch reinforced throat design. The

Contractor shall supply all new track spikes.

(d) Rail anchors shall meet the requirements of Chapter 5 - Track, Part 7 "Rail Anchors". The

Contractor shall supply all new rail anchors of the same type as the existing if the existing

hardware is not suitable for re-installation. Use of a type different from the existing is

acceptable if approved by the Railroad.

(e) Shim plates for use under tie plates shall be ASTM A36 or ASTM A709 Grade 36 steel

and shall have the same plan area and spike hole configuration as the tie plates.

3. CONSTRUCTION REQUIREMENTS.

(a) Track construction shall meet the requirements of Chapter 5, Sections 4 and 5 of the

AREMA Manual.

(b) As directed by the Engineer, defective track spikes, rail anchors, joint bars, tie plates, and

shim plates shall be removed and replaced. No additional compensation for installation of

new materials will be paid.

(c) Existing rail shall be removed within the limits shown on the Plans and stockpiled and

protected from damage due to construction operations.


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(d) All track hardware removed that will not be reset, and any waste material, shall become

the property of the Contractor and shall be removed from the site at the Contractor’s

expense.

4. METHOD OF MEASUREMENT. The quantity of Special Provision (Remove and Reset Railroad

Tracks) to be measured for payment will be the number of linear feet of individual rail tracks

removed and reset within the limits shown on the Plans in the complete and accepted work.

5. BASIS OF PAYMENT. The accepted quantity of Special Provision (Remove and Reset Railroad

Tracks) will be paid for at the Contract unit price per linear foot. Payment will be full compensation

for supplying new rail hardware as required, removing, handling, and resetting rails tracks and

rail hardware, and for furnishing all labor, tools, equipment, and incidentals necessary to complete

the work.

Payment will be made under:

Pay Item Pay Unit

900.640 Special Provision (Remove and Reset Railroad Tracks) Linear Foot


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(e) Each length of cable shall be wound on a separate reel. Reels shall be substantial to

withstand handling and shall be so designed that the inner end of the cable will be secured

and accessible but protected from injury. If the inner end of the cable projects through the

flange of the reel, the inner end shall be protected by a suitable cover of metal having

rounded ends and sides and securely fastened in place to protect the cable end. Both ends

of cable on reel will be secured in place, to prevent their becoming loose in transit or

handling of reel. The diameter of the reel drum shall be at least 14 times the cable diameter

to prevent damage to the cable during reeling. The arbor hole shall admit a spindle 2-1/2

inches in diameter without binding. The reels shall be designated and constructed as

non-returnable when drum size and cable weight and volume permit. The maximum width

of reel shall not exceed 48 inches unless otherwise specified.

(f) After passing factory tests, cable shall be effectively sealed against the entrance of

moisture. Both ends of each length of cable shall be protected by wrappings of rubber tape

and plastic tape, an effective boot taped or sealed into place, or other suitable means

approved by the Engineer. The use of friction tape, other than an external mechanical

protection over an adequate rubber and/or plastic tape, will not be accepted. The cable end

protection will be adequate to protect the cable in shipment and prolonged external storage

in the weather if not immediately employed without regard to the position of the reel while

so stored.

(g) Cable shall be closely and tightly wound, in a uniform manner, in each layer on reels. An

arrow shall be painted on one head of each reel pointing the opposite direction from the

outer end of the cable with the words "Roll This Way" employing letters not less than 3/4

inch height and an arrow not less than six inches in length and 1/2 inch in width.

(h) LED units shall be packaged separately from flashing light units in which they are to be

used.

6. SYSTEM CIRCUIT DESIGN REQUIREMENTS. The Contract Plans and these Specifications

delineate the AHCW system design required. The Contractor will perform all final detail design,

furnish and install all final circuits and wiring plans. In the event the Contractor’s proposed

equipment does not fit the vital design specified, it will be the Contractor’s responsibility to modify

the design and submit his alternate design for approval.

(a) Fail Safe Design Criteria.

(1) Vital circuits shall be designed on fail-safe design principles: i.e., broken wires,

damaged or dirty contacts, a relay failing to respond when energized, or a loss of

power supply energy shall not result in unsafe conditions.


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(10) Vital relays shall be included for the GCR, ECSR, PER and other vital circuits

included in the Contractors design. The GCR (Gate Control Relay) will be

controlled by an output from the integrated controller a Vital Logic Gate (VLG)

delay unit, used to control the gates. The PER (Pre-Emption Relay) shall

interface with the traffic preemption circuit. The PER relay shall be equipped

with heavy duty contacts and shall be a four wire double break circuit to the

traffic controller in advance of the start of the flasher signals. The ECSR

(Emergency Control Stick Relay) will be used to disable the crossing and will

include the emergency cutout switch and control of a red LED, indicating that the

crossing is Out-Of-Service. The LED shall be located on the side of the shelter. A

typical plan set for similar locations can be provided as an example.

(b) Control Circuits.

(1) Control circuits shall be in accordance with AREMA C&S Manual recommended

practices where such practices do not conflict with these specifications.

(2) Where means are provided for cutting out the warning devices during intervals

when trains make regular operating stops or perform switching operations on

approach circuits:

a. Controls shall be designed to provide that warning devices are operating

before train enters the crossing.

b. Automatic control of the warning devices actuated by approaching trains

other than the train that has stopped or is performing switch operations shall

take precedence over any cut out features.

c. Hand throw switches equipped with circuit controllers shall not cause the

warning devices to operate without trains within the approach circuits when

the switch is reversed.

(3) Warning devices shall operate until the rear of the train clears the crossing for trains

operating in either direction.

(c) Modular Design.

(1) Components mounted on printed circuit (PC) cards, weighing more than one-half

ounce or with a displacement of more than 1/2 cubic inch, shall have a mechanical

attachment to the card which is separate from any electrical connection.


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(d) Environment.

(1) Physical – Signal Equipment Housing and Cases.

a. All equipment housed in Signal Equipment housings or cases shall function

in accordance with these specifications and within a temperature range of -

40 °F to +158 °F at a relative humidity of 0 to 100 percent, per AREMA

C&S Manual, Part 11.5.1 for Class C environment requirements.

(2) Physical.

a. Signal equipment installed outside of the signal housing shall be designed

to operate satisfactorily in all weather conditions such as rain, snow, dirt,

temperature, and humidity variations. This shall be determined by the

climatic conditions from data published by the United States Government,

National Oceanic and Atmospheric Administration for the Vermont area. In

addition, the recommendations of the AREMA C&S Manual, Part 11.5.1,

shall be followed to minimize condensation and frost buildup.

(3) Electrical.

a. The electrical environment that the signal equipment will be exposed to

shall be determined by the Contractor. Design, construction, and field

application of the signal system shall prevent interference by the site

environment from affecting the signal system operation. Some of the

possible sources of interference are: AC 60 hertz, rotating machinery, and

lightning.

7. ACTIVE WARNING SYSTEM MATERIALS.

(a) General.

(1) Manufacturers shall be Alstom Signal Co. (GE Transportation Systems), Siemens

(Safetran Systems Corporation), Western Cullen Hayes, Ansaldo STS (Union

Switch and Signal Co.), or approved equal, in entirety where practicable, so as to

ensure proper integration of components into a complete highway crossing signal

layout.


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(2) Highway crossing warning equipment shall meet the requirements established by

AREMA C&S Manual, Automatic Highway-Rail Grade Crossing Warning

Systems, Part 3.3.1, and Recommended Functional/Operating Guidelines for

Control of Automatic Highway–Rail Grade Crossing Warning Systems, Part

3.1.15, except where such instructions and requisites conflict with this

specification.

(3) The Active Warning Systems shall consist of different configurations of flashing

light signals with or without gates mounted on masts and cantilever assemblies,

electronic bells, and all incidental equipment necessary for the proper functioning

of the system. See Contract Plans for equipment layouts. The completed systems

shall include the following features, equipment, and capabilities unless otherwise

indicated.

(b) Crossing Lamp Controller Units:

(1) General. Crossing Lamp Controller units shall be a solid state interface between the

train detection unit and the flasher crossing warning lamps.

(2) Hardware Design.

a. Crossing Lamp Controllers shall be designed as part of the integrated

controller for mounting in a B1 type relay base and installed in the relay

rack.

(3) Operation.

a. Lamp driver circuits shall be capable of sinking up to 20 Amps continuously

from the flasher crossing warning lamps. Alternate flashing lamp and bell

outputs shall energize no more than 1.0 second after control inputs are de-

energized.

b. Alternate lamp flashing rate 55 pulses per minute plus or minus 20%.

c. Where gate control is not provided, flashing lamp and bell outputs shall de-

energize no more than 1.0 second after the control unit is energized.

d. Flashing and steady lamp voltages shall remain within 2% or preset levels

under normal conditions.


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(6) 12” LED Flashing Light Units.

a. The LED signal module shall be 12 inches in size, and as indicated on the

Plans, shall have either a clear or red lens. White LED sidelights shall be

included. Any gasket or similar sealing provisions shall be made of a

material in accordance with AREMA C&S Manual Part 15.2.10

(Recommended Functional Guidelines for Gasket Material Suitable for

Circuit Controllers, Signal Cases and Other Signal Apparatus Housings).

b. The LED signal module shall operate over an ambient temperature range of

-40º F to 158º F per AREMA C&S Manual part 11.5.1. It shall be protected

against dust and moisture intrusion as per the requirements of NEMA

Standard 250-1991, Sections 4.7.2.1 and 4.7.3.2, for Type 4 enclosures.

c. The LED signal module shall meet mechanical vibration and shock

requirements as per AREMA C&S Manual Part 11.5.1., and the lens shall

be UV stabilized.

(7) Electronic bell shall be provided with a weatherproof housing. The housing shall

be constructed of cast aluminum. The bell shall conform to AREMA C&S Manual,

Part 3.2.61. Normal operating voltage shall be 10 volts dc.

(8) Cross-arms for flashing light units shall be constructed of cast aluminum in

accordance with AREMA C&S Manual Drawing, Part 3.2.50 as approved by the

Engineer.

(9) Railroad Crossing Signs (Crossbuck R15-1) shall be white reflex-reflective

sheeting on sheet aluminum with the words ‘RAILROAD CROSSING’ in black

letters, and a 5 inch reflective stripe on the rear, in accordance with MUTCD,

Chapter 8B, Section 8B-03 and VAOT Standard Plan E190.

(10) Flashing light signal assemblies shall be similar to Western Cullen Hayes (WCH)

Model 985-801, Alstom Signal Type AURORA, Siemens(Safetran) FLX-4000

LED, Ansaldo (Union Switch and Signal Co.) Type HC-120, or approved equal.

(f) Cantilever-Gate Combination Flashing Light Signals.

(1) Cantilever structures at highway-rail grade crossings shall meet or exceed the

recommended guidelines in AREMA C&S Manual Part 3.2.5.


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(2) The cantilever structure shall be an aluminum non-rotatable walkout type.

The structure assembly shall be as manufactured by Lindsay Signal

Corporation (formerly Harmon Industries), Model 54004-01, Progress Rail

Service, Lincoln Industries Div., Model 59091026, Modern Industries, Model

54004-XX, or approved equal.

(3) The cantilever shall be designed to withstand a wind velocity of 100 mph, gusts

of 130 mph, with a maximum horizontal deflection of 3° 15’, and be capable of

supporting a 500-pound load at the end of the arm.

(4) The structure shall be equipped with a ladder, ladder guard, and walkway.

The walkway shall be equipped with handrails on both sides and shall be a

minimum of 20 inches wide, constructed of expanded metal to provide good

footing and prevent ice or snow build up. The hand rails shall consist of a top

hand rail 30 inches above the walkway and an intermediate hand rail 18 inches

above the walkway.

(5) The mast shall be constructed of 12-inch aluminum pipe with a solid base. The

structure shall be a single mast structure for arm lengths up to 26 feet and

double mast for arms over 26 feet. A pole mounted junction box shall be

furnished with provisions for terminating all cable wires per Contract

drawings on AREMA terminals. The junction box shall be equipped with a

gasket and front door provided with a means for an approved padlocking.

(6) Cantilever flashing light layouts shall be equipped with an aluminum

cantilever structure, standard Railroad Crossing sign, flashing light signal

units, crossarms, visors, backgrounds and, where required, bell(s). Where the

Contract drawings do not require a bell, the cantilever mast shall have a

pinnacle and multiple track signs where appropriate.

(7) Gate mechanisms shall mounted be on the cantilever with a minimum of two

each mounting clamps and a mast mounted support brackets.

(8) Gate arms shall be mounted on the track side of the cantilever.

(9) Mast mounted back flashing lights shall not interfere with gate arm operation.

(10) Gate arm deflectors shall be provided, adjusted and mounted on cantilever to

prevent gate arm from coming in contact with cantilever arm mounted

flashing lights.


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(11) High wind gate arm support shall be provided and offset from the main mast.

(12) An offset conversion bracket shall be provided for gate assemblies as specified

in AREMA C&S Manual, Part 3.2.10. Conversion brackets shall not exceed

36” in length from centerline of mast to centerline of gate.

(13) Breakaway gate arm adapters shall be included and conform to AREMA C&S

Manual, Part 3.2.21. Design shall allow gate to assume vertical position.

(14) Counterweights should be distributed over both counterweight support arms.

(15) Counterweight arms shall not prevent access to the junction box in any

position.

(16) Walkout platform and ladder assembly shall not interfere with gate arm

operation.

(17) Junction box shall not interfere with the gate operation.

(18) All gates over 30 feet in length shall be equipped with buffer legs to minimize

the “sagging effect” associated with long gates. Buffer legs shall be as

manufactured by Western-Cullen Hayes or approved equal.

(g) Automatic Highway Crossing Warning Gates

(1) The Contractor shall install automatic highway crossing warning signals complete

with gate mechanism, gate keepers, gate arm, counterweights, LED gate arm lights,

high-wind brackets, mast mounted flashing light units, railroad crossing signs,

extension brackets for signs, and, where required, bell(s) where the Contract

drawings do not require a bell, the signal mast shall have a pinnacle and

Number-of-Tracks signs, together with all necessary hardware as specified herein,

in accordance with AREMA C&S Manual, Part 3.2.15, and as shown on the

Contract Drawings.

(2) The ground-mounted mast for supporting a gate mechanism shall be constructed of

five-inch aluminum pipe, 16 feet long complete with pinnacle cap and cast

aluminum double split base junction box. Junction boxes shall be provided with

AREMA terminals, gaskets, and provisions for padlocking both sides. All special

gate hardware for cantilever supported gates shall be ordered with the cantilever

assembly as manufactured by the cantilever supplier.


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March 5, 2021

(10) Shelters shall be provided with a grounding bus of hard drawn pure copper. The

minimum dimensions of this bus shall be 8 inches by 8 inches by 1/2 inch thick.

The bus shall be located on the lower left section of the terminal board and as near

the cable entrance as possible. A minimum of twelve 3/8 inch holes shall be drilled

and tapped in the bus and twelve three-eighths inch by one-half inch long hex head

bronze studs with one washer each shall be furnished.

(11) The free floor space shall be covered by a removable mat as specified.

(12) Equipment layout design shall be such as to mitigate interference from other

equipment or apparatus installed within the same instrument housing.

(i) Components and Equipment for Shelters and Cases.

(1) Equipment Racks. Racks shall be the manufacturer’s standard for the type

equipment furnished and shall be sized to fit the size shelter. Equipment racks shall

include all necessary supports for wire and equipment.

(2) Relay Plug-boards. Plug-boards shall be designed for insertion of removable type

contacts. The method of attaching the wires to the removable contacts shall be

solderless connections. Unless otherwise approved by the Engineer, or proven by

type acceptance testing, the plug-board shall be designed so that the removable

contact will have a direct connection with the contact and coil prongs. The plug-

boards shall be in accordance with the applicable Sections of AREMA Signal

Manual Part 6.2.2. All wires shall be of sufficient length to permit them to be

moved to any contact on the same relay. The plug-boards for vital relays shall be

equipped with a registration plate to prevent relays of the wrong type, contact

arrangement, or operating characteristics from being inserted.

(3) Relay and Component Mounting.

a. In designing the detail layout of the racks, panels, and other equipment

within the AHCW Shelter or case, the Contractor shall group the rows of

racks and the instruments thereon so that similar types of equipment or

functions of a similar nature will be together.

b. Relays for track circuits shall be mounted in upper half of the relay rack.

c. Relays or components shall be mounted at a height of no more than 6 feet

or less than 1 foot from the floor of the room. The overall height of the rack

shall not exceed 7’-4”.


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i. Event Recorder shall be installed in accordance with standard AREMA

temperature ranges for field installed equipment.

j. Event Recorders units shall be provided as follows:

1. Each input and output port shall be equipped with an illuminated

status indicator. The indicator shall light when the respective port is

energized.

2. Each unit shall be equipped with built-in interface for connection of

a printer and modem to download from memory:

i. Capable of storing up to 295,000 events.

ii. Equipped with relay outputs front-heel contacts.

k. Analyzers operating voltage shall be 12V DC nominal capable of 9-16V DC

operation.

l. Units shall be configured for wall mounting. Units shall be bound in a

secure enclosure with wiring connections protected from accidental contact

when passing by.

(16) DTMF.

a. The dual tone, multi frequency (DTMF) shall meet the requirements of

DTMF REMOTE CONTROLLED CROSSING CONTROLLER of

Section 900 and as outlined below.

b. An antenna shall be installed on the outside of the ACHW Signal Instrument

House to send and/or receive signals from a radio.

c. The DTMF controller shall require a password before accepting codes for

operation.

d. The DTMF controller output shall connect to the logic controller’s I/O

module to be able to activate the crossing.

e. The DTMF controller shall be installed in accordance with standard

AREMA temperature ranges for field installed equipment.


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f. Units shall be configured for wall mounting. Units shall be bound in a

secure enclosure with wiring connections protected from accidental contact

when passing by.

g. Only one DTMF tone will be required for the entire project area.

(17) Shelter and Case (Power).

a. AC Power Supply.

1. Shelters shall be provided with a single phase, three wire, 120/240

V AC, 100A 24 circuit panelboards. The capacity rating for each

panel board shall be sized by the Contractor for the projected loads

and shall be rated not less than 100 amps. Panel boards shall contain

25% spare circuit breaker spaces. Two double pole circuit breakers

shall be provided for future use, in addition to the 25% spare circuit

breaker spaces. Circuit breakers provided shall be the thermal

magnetic, molded case type, sized by the Contractor in accordance

with the approved power calculations.

b. External Connection.

1. The Contractor shall design and furnish a new metered power

service at each crossing location to replace the existing service. The

Contractor shall obtain all permits, licenses and agreements with the

supplying power company and be responsible for coordination with

the power company and railroad and all user installation costs that

the power company requires.

2. Submit peak load calculation for meter service within 90 days of

Notice to Proceed. Actual power conductor size shall be calculated

to suit distances and loads. Detail conductor sizes and cable makeup

for application of Contractor’s final design. Sizing for conductors

shall allow no more than a five percent voltage drop between power

source and load under maximum calculated load conditions.

3. All power service materials and equipment installed shall conform

to all applicable state and local ordinances pertaining to electrical

power installations and the latest edition of the NEC.


Page 155


(3) For each crossing, the Contractor shall furnish three (3) new I-13a Emergency

Notification signs. Two (2) signs shall be mounted to the AHCW masts, one (1) on

each side of the crossing on the right hand side of the driver approaching the

crossing. One (1) sign shall be mounted on the signal house or case. All signs shall

be mounted in a manner approved by the Engineer. The sign shall conform to

VTrans Standard Drawings.

(l) Miscellaneous Products and Components.

(1) Printed Circuit Cards.

a. Printed circuit (PC) cards shall be of glass epoxy construction. Card

material shall meet the requirements of NEMA Type FR-4, and meet or

exceed the Class 2 requirements of IPC-A-610F. Cards shall have sufficient

thickness to permit easy insertion and removal, and shall be physically

keyed to protect against incorrect interchange. Circuits shall be formed by

etching. Conductor material shall be copper and shall be protected from

exposure to air.

b. PC cards containing components that may be damaged in the event a plug

connector or plug-in unit is removed while the equipment is energized shall

be clearly marked or labeled with a warning note and means provided to

remove power to the PC cards.

c. Components mounted on the PC card, weighing more than 1/2 ounce or

with a displacement of more than 1/2 cubic inch, shall have mechanical

supporting attachment to the card which is separate from all electrical

connections.

d. Stacking or piggy-backing of printed circuit card sections in order to

accomplish changes or modifications to wiring or components on printed

circuit cards will not be allowed.

(2) Printed Circuit Card Connectors.

a. Connectors shall have gold plating a minimum thickness of 0.000050 inch.


Page 167


3. The following is a guide to minimum storage battery size. The

Contractor shall calculate the loads based upon the equipment that

the Contractor proposes to furnish. All batteries shall be sized for a

minimum 24-hour standby capacity at an ambient temperature of

40° F.

80 AMP-Hour (minimum) – DC steady energy track battery;

340 AMP-Hour (minimum) – Local B12 battery;

340 AMP-Hour (minimum) – Local B14 battery.

4. Physical Construction.

i. Polypropylene container and cover.

ii. Projected design life of 20 years at 80 percent rated capacity.

ii. Individual cells (multiple cell groups or modules not

allowed).

iv. The battery shall be low maintenance, meaning no

overcharge will be required.

(27) Vital Relays.

a. General.

1. Vital relays shall meet the requirements of AREMA Signal Manual

Part 6.2.1, except as specified herein.

2. All relays and equipment specified shall be capable of rated

performance through an operating temperature range of minus 40°

F to plus 158° F.

3. All relays shall be in dust-proof enclosures, except a provision shall

be made for ventilation where required for heat dissipation.

4. Arc suppression for vital relays shall be built into the relay or into

its plug-board.

5. Contact arrangements shall be identical for similar types of relays,

except special function relays.


Page 169


2. The flashing rate shall be no less than 35 times per minute or more

than 65 times per minute and shall be in accordance with AREMA

Signal Manual Part 3.2.55.

c. Timers and Time Element Relays.

1. Timers used for loss of shunt protection or special applications

approved by the Engineer shall be of the vital solid state type.

2. Any interruption of power shall cause an immediate reset to the

beginning of the selected time delay. The timer shall be accurate to

less than 1 second within ±0.1 percent over the entire temperature

range of –40° F to 158 °F.

3. The Contractor may submit a thermal or motor driven time element

relay in lieu of solid state for the Engineer’s approval.

(28) Shunt Enhancement Systems.

a. General.

1. Shunt enhancement systems shall meet the requirements of AREMA

Signal Manual Part 3.1.17, except as specified herein.

2. Shunt enhancement systems shall be used to improve shunting

characteristics by providing a DC whetting voltage to break down rust

and contaminants on the rail. Shunt Enhancement Systems shall be as

manufactured by Genesis Technologies Model t-Rx7100, Siemens

(former Safetran Systems Corp) Model 80049 or approved equal.

3. The shunt enhancement systems supplied for this Contract shall meet

the following requirements:

i. Constructed from time proven components.

ii. Provide a DC voltage in a range between 6 and 7.5 volts to the

rails.

iii. Monitor the DC voltage to the rails and provide a system check

output of 12-15 volts DC for the use of activating the crossing if

the shunt enhancement system fails.


Page 200


RECONSTRUCT RAIL-HIGHWAY CROSSING

1. DESCRIPTION. This work includes rehabilitation of existing crossing and construction of new

full depth precast concrete panel rail-highway road surface crossings of the railroad track with the

intersecting road at the same grade (level), including finishing all required materials and necessary

incidentals in accordance with the Contract Documents and as directed by the Engineer.

2. LOCATION. The Contractor will design, furnish, and install a complete and new rail-highway

crossing(s) as shown on the Plans and hereinafter specified at:

(a) College Street, Burlington, VT (DOT#837-102H). Remove existing crossing surface.

Dispose of material appropriately. Excavate existing roadbed material to the surface of

proposed roadbed. Compact and prepare roadbed surface. Install subballast, ballast, cross

ties, new rail, rail seal flangeway fillers, precast concrete panels (field and gauge side),

underdrain, full depth asphalt crossing surface, and new asphalt approach material.

3. REFERENCE STANDARDS. Including but not limited to:

(a) American Railway Engineering and Maintenance-of-Way Association (AREMA) –

“Manual for Railway Engineering”

(b) National Committee on Uniform Traffic Control Devices for Streets and Highways-

“Manual for Uniform Traffic Control Devices”

4. MATERIALS. Materials shall meet the following requirements:

(a) Underdrain shall meet the requirements of Section 605.

(b) Geotextile shall meet the requirements of Section 649 for Geotextile Under Railroad

Ballast.

(c) Aggregate for Railroad Ballast.

(1) Materials. Ballast shall meet the requirements of the current edition of the AREMA

Manual, Chapter 1, Part 2, Section 2.3 and Section 2.4. The ballast shall be a

minimum of Size No. 4 for mainline, Size No. 4a for railyards and sidings, and Size

No. 5 for walking stone as defined in Table 1-2-2 in the current edition of the

AREMA Manual, Chapter 1, Part 2, Section 2.4.4 and shall be limited to crushed

granites, trap rocks, or quartzites, and shall contain no carbonates or slags.

(2) Production and Handling. Production and handling shall meet the requirements of

the current edition of the AREMA Manual, Chapter 1, Part 2, Section 2.5.


Page 202


An AREMA declaration form will be provided by the Agency and shall be signed by the

Contractor declaring that all materials listed on the form are in compliance with AREMA.

Cross ties shall meet the material requirements of Chapter 30, Section 3.1.1 “Specifications

for Timber Cross Ties” AREMA Manual – current edition.

All cross ties shall be end plated with anti-splitting devices as required per Chapter 30,

Section 3.1.7 “Application of Anti-Splitting Devices” AREMA Manual – current edition.

(3) Preservative Treatment. All cross ties shall meet the requirements in TABLE

726.01A and 726.01B. Except Preservative Type III Chromated Copper Arsenate

and Alkaline Copper Quaternary Type B – Chromated Copper Arsenate, Type C,

and Type DV – Alkaline Copper Quaternary shall not be used in the preservative

treatment of the cross ties. The ties shall be handled, seasoned, and preserved in

accordance with the requirements of Chapter 30, Part 3, AREMA Manual – current

edition.

(4) Field Applied Preservative Treatment. Field applied preservative treatment shall

meet the requirements of Section 726 and shall be approved by the Engineer prior

to use.

(f) Tie plates. Tie plates shall be new or approved relay Plan Number 12 Punching A, meeting

the material requirements of the current edition of the AREMA Manual, Chapter 5, Part 1,

Section 1.1.

(g) Track Spikes. Track spikes shall be new 5/8-inch reinforced throat. They shall meet the

dimensional requirements of Chapter 5, Section 2.2 “Design of Track Cut Spikes” AREMA

Manual – current edition. The material requirements of the track spikes shall be in

accordance with Chapter 5, Section 2.1 “Specifications for Soft-Steel Track Spikes”

AREMA Manual – current edition. Track spikes will be shipped in fifty-pound containers.

(h) Tie Plugs. Tie plugs, if used, shall meet the requirements of Chapter 30, Section 3.1.5

“Specification for Tie Plugs and Synthetic Tie Plugging Materials” AREMA Manual –

current edition.

(i) Anchors. Anchors shall be new and meet the material requirements of the current edition

of the AREMA Manual, Chapter 5, Part 7, Section 7.1.

(j) Precast Concrete Panel. Shall meet the requirements of PRECAST CONCRETE

PANEL GRADE CROSSING SURFACE of Section 900 and as outlined below.


Page 203


5. SUBMITTALS. The Contractor shall prepare and submit the following in accordance with

the submittal requirements of the Standard Specifications for Construction:

(a) Site specific work plan for work to be undertaken at each crossing, including

construction staging, and any proposed temporary paving.

(b) Shop drawings showing details of crossing surface and for other materials in related

Sections and production quality control documentation.

(c) Type and specifications of equipment to be used in raising, tamping, and lining

track.

(d) Procedures for inspection of track prior to placing in service for train operation.

(e) Vermont Rail System Procedures for the Installation, Adjustment, Maintenance and

Inspection of CWR. This document shall be provided to the Contractor in PDF

format and the Contractor shall print a hardcopy and have it available at the job site

and utilize this document for the installation of CWR.

6. INSTALLATION.

(a) General.

(1) The crossing shall be installed in accordance with AREMA, VTrans

Specifications, and the Manual on Uniform Traffic Control Devices (MUTCD)

Part VIII – Traffic Control Systems for Railroad-Highway Grade Crossings.

(2) Installation at highway grade crossings shall comply with the approved traffic

control plan and be performed as directed by the Engineer. The Contractor

shall be responsible for providing flaggers and uniformed traffic officers in

accordance with the Contract Documents and as necessary to perform their

work in a safe manner or as directed by the Engineer.

(3) Track work at highway crossings shall be closely coordinated with signal

system installation and highway grading, drainage, and paving work, so that

paving between tracks and adjacent to tracks can be accomplished in a single

operation with highway paving.

Where required, conduits for signal wires and cables, and drainage pipes shall

be installed within the track excavation as shown on the Plans.


Page 204

Revsied March 5, 2021

(i) Crossing surfaces, widths, lengths, and locations shall be as shown in the Plans.

(5) Where necessary to open crossings to highway traffic before final panel

installation and paving is completed, temporary panels and/or paving may

be required. Ensure that temporary panels and pavement surfaces are

properly maintained to avoid adverse highway traffic loads to the track

structure. Completely remove temporary paving and restore surfaces before

final paving.

(b) Site Conditions.

(1) Grading shall progress in such a way as to avoid ponding of water. The

Contractor shall construct any temporary ditching which may be needed.

(c) Subgrade Preparation.

(1) The subgrade surface shall be prepared to a relatively smooth surface,

properly graded, and shall be free of obstructions, depressions, water, debris,

and soft or low-density pockets of material. Soft zones below the final subgrade

shall be removed and replaced with compacted sand borrow. All stones larger

than 6” shall be removed from the subgrade area.

(2) The subgrade surface shall be finished to within 0.1 foot of the staked

elevations and shall not have depressions which will pond water.

(3) Prior to the placement of the sub-ballast, the subgrade surface shall be proof-

rolled using heavily loaded pneumatic-tired equipment or, by vibratory roller

on granular subgrades.

(d) Railroad Subballast. Construction of the sub-ballast shall be performed in

accordance with the current edition of the AREMA Manual, Chapter 5, Part 2,

Section 2.11.4 and as noted below.


Page 216


8. BASIS OF PAYMENT. The accepted quantity of Special Provision (Reconstruct Rail-Highway

Crossing) at the location specified will be paid for at the lump sum Price. Payment will be full

compensation for removal and disposal of existing materials; excavation; furnishing, transporting,

handling, and installing the materials specified including rail, cross ties, rubber rail seal rubber

flangeway fillers, precast concrete panels (field and gauge side), spikes, tie plates, other track

material, timber screws, comp welds, furnishing and installing 12 inch underdrain; ballast, sub-

ballast, geotextile, temporary paving on roadways; performing general cleanup and removal of

materials from the site upon completion of the work; and for furnishing all labor, tools, equipment,

and incidentals necessary to complete the work.

Where required, underdrain carrier pipe and all appurtenances, such as joints, bends, and caps,

underdrain flushing basins, material used for backfilling voids created by the removal of unsuitable

material below subgrade, all associated excavation, and out letting of underdrain to the existing

drainage swale will not be paid for directly, but will be considered incidental to Special Provision

(Reconstruct Rail-Highway Crossing).

Restoring driveway surfaces as shown on the Plans and as directed by the Engineer; emulsified

asphalt used in the treatment of surfaces prior to placing pavement; and furnishing and placing

final pavement of the roadway, base, and top courses will be paid for separately under the

appropriate Contract items.


Pay Item Pay Unit

900.645 Special Provision (Reconstruct Rail-Highway Lump Sum

Crossing)(DOT 837-102H)


Page 238


(b) The Contractor shall transport the painted steel members back to the project site. If the steel

members are not to be erected immediately from the transport vehicle the Contractor shall

store the members on-site using wood blocking to protect and prevent damage to the paint

system during storage.

5. METHOD OF MEASUREMENT. The quantity of Special Provision (Station Canopy) to be

measured for payment will be on a lump sum basis for painting and erecting the salvaged canopy

and providing a stable structure with a watertight roof system with roof drains.

6. BASIS OF PAYMENT. The accepted quantity of Special Provision (Station Canopy) will be paid

for at the Contract lump sum price. Payment will be full compensation for transporting, erecting,

and painting the salvaged canopy, including all elements and attachments, and for furnishing all

labor, tools, equipment, materials, and incidentals necessary to complete the work, including

providing the required nuts, bolts, washers, 2x4s, 2x6s,2x8s, tongue and groove planks, and

roofing repair and patch material to provide a fully finished, erected, painted, and structurally

stable canopy with watertight roof and functioning roof drains.


Pay Item Pay Unit

900.645 Special Provision (Station Canopy) Lump Sum


Page 239


STATION LIGHTING

1. DESCRIPTION. This work shall consist of furnishing and installing an electrical lighting system,

including light fixtures, mounting brackets, light poles, light pole foundations, anchors, wiring,

electrical panels, and all incidentals necessary to complete the work as shown in the Plans and as

directed by the Engineer.

The work under this Section shall be performed in accordance with these provisions, the Plans,

and Sections 678 and 679 of the Standard specifications.

2. MATERIALS. Materials shall meet the requirements of the following Subsections:

Polyvinyl Chloride (PVC) Plastic Pipe ..........................................................710.06

Electrical Conduit ..........................................................................................752.08

Polyethylene Plastic Pipe and Fittings (HDPE) Electrical Conduit...............752.08(b)

Grounding Electrodes ....................................................................................752.15

(a) Light Fixture A shall be manufactured by Becaon Lighting-Hubbel, Beacon | Homepage

(hubbell.com), Gradco, https://www.signify.com/en-us/brands/gardco, Lumec,

https://www.signify.com/en-us/brands/lumec, or an approved equal and shall be

designed to accommodate the same wireless controls, including revised size of

housing, as needed. If housing increased, lumen output shall be adjusted to match

original design.

Ordering Information for Light Fixture A:

Fixture TBD

Color Black Textured

LED 30watt Nominal (Delivered lumens to be +/-2,500)

LED Temperature 3,000K

Distribution Type V

Options Edgelit or Uplight

Voltage 120

(b) Light Fixture: Fixtures shall have a die-cast aluminum housing with a corrosion resistant

powder coat finish, and a one-piece molded silicone gasket.

(c) Finish: The light fixture and fixture adapters shall be a black textured surface treatment,

thermosetting polyester resin-based powder coating.

(d) LED: The LED light engine shall be 30watt Nominal with a 3,000 kelvin color temperature.

The delivered lumens for this light fixture shall be +/-2,500. The distribution pattern shall

be Type V distribution.

Burlington STP 2035(15) C/2 & PLAT(3) Advertised February 10, 2021 Page 266

Added March 5, 2021

PART II – ADDITIONAL SPECIAL PROVISIONS

PRECAST CONCRETE PANEL GRADE CROSSING SURFACE

1. DESCRIPTION. This work shall consist of furnishing and installing a panelized precast concrete railroad grade crossing surface, including all hardware required to attach the panels at a rail-highway crossing, at the location indicated in the Plans, in accordance with the Contract Documents, and as directed by the Engineer.

2. GENERAL. This work includes furnishing and installing a new grade crossing surface consisting of precast concrete panels with elastomeric, non-conductive filler or boot along entire base and sides of rail and in the flangeway area for the full length of the crossing to insulate the rails from the concrete.

3. SUBMITTALS. The Contractor shall prepare and submit the following in accordance with the submittal requirements of Section 105 of the Standard Specifications:

(a) Site specific work plan for work to be undertaken at each crossing, including construction staging, any proposed temporary paving or temporary detours, material storage sites, and compliance with the Maintenance of Traffic (MOT) Plan, if shown on the Plans.

(b) Fabrication Drawings showing details of crossing surface, and for other materials in related Sections and production quality control documentation.

(c) Documentation of approval from the Railroad to proceed with the work, including identification of any stipulations or requirements of the Railroad. Documentation shall include copies of any insurance certificates furnished to the Railroad.

(d) Procedures for inspection of track prior to placing in service for train operation.

4. MATERIALS. The precast concrete crossing panels to be furnished shall be an approved system cast by an approved manufacturer in accordance with the Contract Documents or as directed by the Engineer.

The Contractor shall provide and install lag-type shunt resistant precast concrete panels using a minimum of 6000 psi concrete and American Grade 60 reinforcement. Each panel shall have a 3 inch x 3 inch x 1/4 inch angle with a 3 mil rust inhibitive coating.


Added March 5, 2021

Each panel shall be manufactured to meet HS20-44 loading in accordance with AASHTO Standard Specifications for Highway Bridges, with a 30% impact increment. Loadings shall be based on a single axle load of 32,000 lbs (16,000 lbs per side). Design calculations shall be certified by a Professional Engineer registered in the State of Vermont. Each panel shall have a non-skid surface and be protected from freeze/thaw cycles, deicers, and other contaminates using 4 to 6 percent air entrainment.

Each gage panel shall be sized as shown in the plans and manufactured to the correct height for the rail size specified. Gage panel height shall be flush with top of rail. Gage panels shall have a 3 inch gap at each end of the frame with a non-conductive polyethylene shield. The field panels shall be sized as shown in the plans. Field panel height shall be flush with the top of rail. The dimensional tolerances for each panel shall be ± 1/8 inch. Field panel height shall be flush with the top of rail. The precast concrete crossing system shall also have a minimum 1/4 inch steel end deflector shield at each end.

The crossing panels shall be manufactured to be compatible with all rail fastening hardware and rail anchors.

The field and gage panels shall have recessed timber screw holes to protect the timber screw heads from vehicular wheel impact. Each panel shall have two (2) galvanized recessed lifting eyes with a minimum of 4,000 lbs lifting capacity.

A minimum 1/8 inch elastomeric bearing pad shall be installed between the top of the timber cross tie and bottom of the concrete panels. The elastomeric bearing pad shall follow AREMA specifications for nonconductive rubber and shall meet ASTM D412 strength and ASTM D2240 hardness requirements.

The manufacturer shall supply Fabrication Drawings detailing crosstie spacing and placing prior to installation. The manufacturer shall submit Fabrication Drawings within fourteen (14) working days after onsite field measurements are taken by the manufacturer. The Fabrication Drawings shall include a full cross section view of the panels on crossties, a plan view of panels in the track, and a detail of the flangeways. The Fabrication Drawings shall also indicate data on panel weights, loading specifications, lifting eye specifications, and any other applicable information.

The manufacturer shall verify that they have been actively involved in the manufacture of precast concrete grade crossing panels for a minimum of seven (7) years. The manufacturer shall provide the Owner and Engineer with a one (1) year manufacturer’s limited warranty from date of installation.


Added March 5, 2021

Attached elastomeric flangeway filler shall be required for the grade crossing. The attached flangeway must be capable of being removed and replaced if damaged. The field side flangeway shall be 2-1/2 inches ± 1/4 inch wide from the ball of rail to the panel. The filler shall be flush and level with the top of panel. The gage flangeway filler shall be 2-3/4 inches to 3 inches maximum from the ball of rail to concrete panel in standard 56-1/2 inch gage track. It shall be able to accommodate rail anchors or clips.

5. CONSTRUCTION REQUIREMENTS. Installation shall meet the following requirements:

(a) The crossing shall be installed in accordance with AREMA, VTrans Specifications, and the Manual on Uniform Traffic Control Devices (MUTCD) Part VIII – Traffic Control Systems for Rail-Highway Grade Crossings.

(b) Installation at highway grade crossings shall comply with the approved project traffic control plan and be performed as directed by the Engineer. The Contractor shall be responsible for providing flaggers and uniformed traffic officers in accordance with the Contract Documents and as necessary to perform the work in a safe manner or as directed by the Engineer.

(c) Track work at highway grade crossings shall be closely coordinated with signal system installation and highway grading, drainage, and paving work, so that paving adjacent to tracks can be accomplished in a single operation with highway paving. Where required, conduits for signal wires and cables, and drainage pipes shall be installed within the track excavation as shown on the Plans.

(d) Crossing surface, widths, lengths, and locations shall be as shown on the Plans.

(e) Where necessary to open crossings to highway traffic before final panel installation and paving is completed, temporary panels and/or paving may be required. Ensure that temporary panels and pavement surfaces are properly maintained to avoid adverse highway traffic loads to the track structure. Completely remove temporary paving and restore surfaces before final paving.

(f) Grading shall progress in such a way as to avoid ponding of water. The Contractor shall construct any temporary ditching which may be needed.

(g) The subgrade surface shall be prepared to a relatively smooth surface, properly graded, and shall be free of obstructions, depressions, water, debris, and soft or low density pockets of material. Soft zones below the final subgrade shall be removed and replaced with compacted sand borrow. All stones larger than 6 inches shall be removed from the subgrade area.


Added March 5, 2021

(h) The subgrade surface shall be finished to within 0.1 foot of the staked elevations and shall not have depressions which pond water.

(i) Thread CWR onto ties in a manner that avoids damage to ties and lowers rail into rail seat area of tie or tie plate. Lay opposite CWR strings in manner that will result in a minimum 10 foot stagger of field welds, and that does not place a field weld within 10 feet of the edge of a highway crossing, or within 25 feet of a transition between types of track construction.

6. METHOD OF MEASUREMENT. The quantity of Special Provision (Precast Concrete Panel Grade Crossing Surface) at the location specified to be measured for payment will be on a lump sum basis for each crossing installed in the complete and accepted work.

7. BASIS OF PAYMENT. All costs associated with providing and installing the concrete panel grade crossing surface in accordance with this Special Provision and the RECONSTRUCT RAIL-HIGHWAY CROSSING of Section 900, including all submittals, installations, and testing procedures and for furnishing all labor, tools, equipment, and incidentals necessary to complete the work will be incidental to item 900.645, “Special Provision (Reconstruct Rail-Highway Crossing)(DOT 837-102H)”.