Amendment_0002-FTNP-GWMP_11(6).pdf

Amendment No. 0002

Info Page 1 of 2

U.S. DEPARTMENT OF TRANSPORTATION

FEDERAL HIGHWAY ADMINISTRATION

EASTERN FEDERAL LANDS HIGHWAY DIVISION

Project PRA-GWMP 11(6)

George Washington Memorial Parkway Solicitation: DTFH71-15-B-00030

The purpose of this Amendment is to:

1) Revise the Solicitation B Pages to replace the Bid Schedule to add/delete various pay items.

2) Revise the Special Contract Requirements (J Pages) as follows:

a) Section 104 to add construction vehicle restrictions.

b) Section 107 to add waterway protection requirements.

d) Sections 429 and 702, and Subsection 703.08 to delete the ultra-thin bonded wearing course requirements.

e) Section 555 to modify the steel structure construction requirements.

3) Revise the Plans to delete the milling, ultra-thin bonded wearing course, and expansion joint repair work.

4) Provide the Pre-Bid Meeting sign-in sheet.

5) Provide a summary of responses to questions/clarifications asked by potential bidders.

The Bid Opening date of June 18, 2015, at 2:00 p.m. EST will remain the same.

Solicitation B Pages changes

Delete the Solicitation Bid Schedule pages B-1 thru B-4, and substitute the amended Bid Schedule pages B-1 thru B-4.

a) Deleted pay item 41301-0000 [Asphalt Pavement Milling].

b) Revised quantity for pay item 41401-2000 [Cracks, Cleaning and Sealing].

c) Revised quantity for pay item 41801-2000 [Asphalt Concrete Pavement Patch Type 2)].

d) Deleted pay item 42903-0000 [Ultra-Thin Bonded Wearing Course (3/4-Inch Depth)].

e) Revised quantity for pay item 55220-0000 [Repair Concrete (Top of Deck)].

f) Deleted pay item 55235-0000 [Expansion Joints (Roadway Expansion Joints)].

Info Page 2 of 2

Plan Sheet changes

Delete Plan Sheets B01, C01, D01, D02, R01, R20 and R26, and substitute the amended Plan Sheets B01, C01, D01, D02, R01, R20 and R26.

a) Sheet B01 (Typical Section) updated to delete ultra-thin bonded wearing course work.

b) Sheet C01 (Tabulation of Quantities) updated to delete pay items for asphalt pavement milling, ultra-thin bonded wearing course, and expansion joint repairs; and to revise quantities for crack cleaning and sealing, asphalt pavement patching, and top of deck concrete repairs.

c) Sheets D01 and D02 (Plan & Elevation) updated to delete ultra-thin bonded wearing course work.

d) Sheet R01 (General Notes and Index) updated to revise description for structural steel member.

e) Sheet R20 (Top of Sidewalk Repair Layout -1) updated to delete bridge rail repair work.

f) Sheet R26 (Miscellaneous Details) updated to delete roadway expansion joint repair work.

B - 1

Amendment Item No. Pay Item No. Description Quantity Unit Unit Price Amount

A0100 15101-0000 MOBILIZATION

ALL LPSM $___LPSM_____ $____________

A0150 15201-0000 CONSTRUCTION SURVEY AND STAKING

ALL LPSM $___LPSM_____ $____________

A0200 15401-0000 CONTRACTOR TESTING

ALL LPSM $___LPSM_____ $____________

A0250 27001-0000 GROUT

1 CUYD $____________ $____________

0002 A0300 41301-0000 ASPHALT PAVEMENT MILLING

300 SQYD $____________ $____________

0002 A0350 41401-2000 CRACKS, CLEANING AND SEALING

3,000 LNFT $____________ $____________

0002 A0400 41801-2000 ASPHALT CONCRETE PAVEMENT PATCH, TYPE 2

3,000 SQYD $____________ $____________

0002 A0450 42903-0000 ULTRA-THIN BONDED WEARING COURSE (3/4-INCH DEPTH)

16,000 SQYD $____________ $____________

0002 A0500 55220-0000 REPAIR CONCRETE (TOP OF DECK)

400 SQYD $____________ $____________

A0550 55220-0000 REPAIR CONCRETE (TOP OF SIDEWALK)

640 SQYD $____________ $____________

A0600 55221-0000 REPAIR CONCRETE (CONCRETE PEDESTALS)

1 CUYD $____________ $____________

0002 A0650 55235-0000 EXPANSION JOINTS (ROADWAY EXPANSION JOINTS)

960 LNFT $____________ $____________

A0700 55236-0000 EXPANSION JOINT REPAIR (SIDEWALK EXPANSION JOINTS)

ALL LPSM $___LPSM_____ $____________

A0750 55501-0000 STRUCTURAL STEEL (STRINGER 4-6 REPAIR)

ALL LPSM $___LPSM_____ $____________

Bid Schedule Schedule:A Schedule Type:Base Contract

Project No:FTNP-GWMP 11(6)

Project Name:ARLINGTON MEMORIAL BRIDGE REPAIR WORK

B - 2

A0800 55501-0000 STRUCTURAL STEEL (STEEL BRACKET SUPPORTS, NE BEARING SEAT

PLATES, CURB STRINGER STEEL SUPPORT SYSTEM, CATWALK CHANNEL

STRENGTHENING, AND OTHER MISCELLANEOUS STRUCTURAL STEEL)

ALL LPSM $___LPSM_____ $____________

A0850 55501-2100 STRUCTURAL STEEL, REPAIR GUSSET PLATE

ALL LPSM $___LPSM_____ $____________

A0900 55502-0000 STRUCTURAL STEEL, FURNISHED, FABRICATED, AND ERECTED (BASCULE

SPAN SIDEWALK SUPPORT)

16,000 LB $____________ $____________

A0950 55502-0000 STRUCTURAL STEEL, FURNISHED, FABRICATED, AND ERECTED (SUPPORT

COLUMNS)

12,000 LB $____________ $____________

A1000 55502-0000 STRUCTURAL STEEL, FURNISHED, FABRICATED, AND ERECTED (SIDEWALK

BEAMS AND FLOORBEAMS AT ALL CORNERS(C10x15.3, C15x33.9, W12x45, HP12x53) AND STRINGER 8-10 REPAIR)

5,600 LB $____________ $____________

A1050 55706-2000 STRUCTURAL TIMBER AND LUMBER, TREATED (CATWALK AND STAIRS

REPAIRS)

ALL LPSM $___LPSM_____ $____________

A1100 55706-2000 STRUCTURAL TIMBER AND LUMBER, TREATED (PEDESTRIAN BRIDGE

PLANKS)

ALL LPSM $___LPSM_____ $____________

A1150 55706-2000 STRUCTURAL TIMBER AND LUMBER, TREATED (TRUNNION PIN SHIMMING)

ALL LPSM $___LPSM_____ $____________

A1200 56401-0000 BEARING DEVICE (SOUTH CENTER LOCK REPAIRS)

1 EACH $____________ $____________

A1250 56401-1000 BEARING DEVICE, ELASTOMERIC

30 EACH $____________ $____________

Bid Schedule Schedule:A Schedule Type:Base Contract

B - 3

A1300 60705-0000 REPAIRING DRAINAGE STRUCTURE (CATCH BASIN GRATES)

10 EACH $____________ $____________

A1350 60910-0000 RESET CURB

120 LNFT $____________ $____________

A1400 61901-1300 FENCE, CHAIN LINK (TEMPORARY), RELOCATION

1,000 LNFT $____________ $____________

A1450 61901-1300 FENCE, CHAIN LINK (TEMPORARY)

500 LNFT $____________ $____________

A1500 63401-1500 PAVEMENT MARKINGS, TYPE H, SOLID

6,000 LNFT $____________ $____________

A1550 63401-1600 PAVEMENT MARKINGS, TYPE H, BROKEN

9,500 LNFT $____________ $____________

A1600 63405-0050 PAVEMENT MARKINGS, SYMBOLS /WORD

7 EACH $____________ $____________

A1650 63405-2900 PAVEMENT MARKINGS, TYPE H, TURN ARROW

16 EACH $____________ $____________

A1700 63405-2950 PAVEMENT MARKINGS, TYPE H, STRAIGHT ARROW

2 EACH $____________ $____________

A1750 63405-3050 PAVEMENT MARKINGS, TYPE H, "ONLY" WORD MESSAGE

10 EACH $____________ $____________

A1800 63501-0000 TEMPORARY TRAFFIC CONTROL

ALL LPSM $___LPSM_____ $____________

A1850 63701-0000 FIELD OFFICE

1 EACH $____________ $____________

Submitted by:____________________________________ Schedule Total:____________

Bid Schedule Schedule:A Schedule Type:Base Contract

B - 4

Amendment Item No. Pay Item No. Description Quantity Unit Unit Price Amount

B0100 15101-0000 MOBILIZATION

ALL LPSM $___LPSM_____ $____________

B0150 20304-1000 REMOVAL OF STRUCTURES AND OBSTRUCTIONS (TRUSS AND TRUNNION

POST BASE DEBRIS)

ALL LPSM $___LPSM_____ $____________

B0200 63501-0000 TEMPORARY TRAFFIC CONTROL

ALL LPSM $___LPSM_____ $____________

Submitted by:____________________________________ Schedule Total:____________

Bid Schedule Schedule:B Schedule Type:Base Contract

SCR_Changes Page 1 of 3

Special Contract Requirement (J Pages) changes

1. Add the following to Subsection 104.05 of the Special Contract Requirements, page J-2:

Do not exceed a Gross Vehicle Weight of 30,000 pounds on the Arlington Memorial Bridge with the following restrictions:

(a) Operate construction vehicles at speeds not to exceed 10 miles per hour.

(b) Space construction vehicles at 50-foot minimum intervals.

(c) Maintain a minimum of 10-foot clear distance between adjacent construction vehicles.

2. Add the following to Subsection 107.02 of the Special Contract Requirements, page J-4:

If the Contractor proposes any activities requiring work on or from barges or other water craft to access the bridge to perform the required work or cause temporary or permanent encroachment into any of the current span openings of the bridge that require closure, reduction or detour of any currently permitted Potomac River navigation due to construction operations or any other activities and operations that require notification or approval from the U.S. Coast Guard (USCG) comply with the following and any other applicable USCG requirements and regulations.

Submit a plan and schedule of operations at least 45 days prior to commencement of work in the waterway (or as soon as possible for emergency repairs) for approval to the office of the USCG - Bridge Branch at the following address:

U. S. Coast Guard - Bridge Branch Portsmouth Federal Building 1st Floor - 431 Crawford Street Portsmouth, VA 23704

Submit a copy of the plan and schedule the CO and to the office of the USCG Sector Baltimore at the following address:

U. S. Coast Guard Sector Baltimore Waterways Management 2401 Hawkins Point Road Baltimore, MD 21226-1797

Include a sketch of the waterways; the bridges; the location of any restrictions that will be placed in the waterways such as barges, anchors, and anchor lines; the location and height above mean high water and detailed description of any scaffolding, or netting; detailed description indicating the placement, type and dimension of any cofferdams if used. Include any specific request for a reduction in the navigation height or width affect spans and what type of vessel traffic uses the waterway and if any input from the waterway users has been acquired. Include in the schedule the hours of operation and whether or not the equipment will be removed at night.

SCR_Changes Page 2 of 3

Comply with all provisions of the Navigation Rules International - Inland, available from the Superintendent of Documents, U.S. Government Printing Office, Washington, DC.

Submit to the CO a copy of all correspondence with the Coast Guard. Do not deviate from the approved plan and schedule of operation unless the modification has previously been submitted and approved by the Coast Guard.

Barges or work floats that are used in the waterways during the project must be marked in accordance with Title 33 Code of Federal Regulations (CFR), Section 118.95 that outlines temporary marking and lighting requirements. If barge or float anchor lines are used, they must be marked by anchor buoys, which should be lighted. Any questions, regarding lights on the barges or work floats, please contact Chief, Waterways Management Section, at (757) 398-6230.

Maintain close and regular contact with Coast Guard Sector Baltimore at (410) 576-2674 to keep them informed to activities in waterways; and responsible for compliance with the requirements of any Federal, State, or local agency that may have jurisdiction over any aspect of the project.

Do not close the waterway to navigation at any time without prior approval from the Coast Guard.

To facilitate a decking platform, the available vertical clearance in the navigation channel at span, if it will be temporarily reduced from the fixed height above mean high water. Provide quick flashing red lights, positioned no more than 10 feet apart and on all corners, to mark the bottom of the decking platform used under the bridge and erect legible signs on the existing fender system so as to draw the mariner's attention to the fact that the vertical clearance has been reduced.

During the progress of work, while the channel is in operation, should any material, machinery or equipment be lost, dumped, thrown overboard, sunk or misplaced which may be dangerous to or obstruct navigation, give immediate notice to the Coast Guard and remove the object with the utmost dispatch. Until removal can be effected, properly mark the objects in order to protect navigation. Notify the Coast Guard and provide a description and location of any such object and the action taken or being taken to protect navigation.

Take positive means to prevent any hot work, debris or construction material from entering the waterway. If welding or burning is to take place, use some type of flame-proof material for the uppermost protective containment material. Stop all welding and burning upon approach of a vessel and do not start again until the vessel is past the bridge. Station a safety boat so as to have unimpeded view of both upstream and downstream access to the waterway area thereby assuring that all workmen can be alert of a vessel’s approach via marine radio or channel 13 very high frequency (VHF) or by appropriate mechanical means, such as an air horn.

Ensure no permanent change in the approved clearances of the bridge as a result of this work.

The work will not interfere with the normal operation of the drawbridge and at no time during the work will the waterway be closed to navigation without the prior notification and approval of

SCR_Changes Page 3 of 3 the Coast Guard. The Contractor is required to maintain close and regular contact with Coast Guard Sector Baltimore to keep them informed to activities in waterway at (410) 576-2674.

3. Delete Section 429 of the Special Contract Requirements, pages J-15 thru J-20.

4. Delete the second sentence of the first paragraph of Subsection 555.03(b) of the Special Contract Requirements, page J-21.

5. Delete Section 702 of the Special Contract Requirements, page J-28.

6. Delete Subsection 703.08 of the Special Contract Requirements, pages J-29 and J-30.

ESTIMATED QUANTITIES

B0100 15101‐0000 MOBILIZATION LPSM ALL ALL

B0150 20304‐1000 REMOVAL OF STRUCTURES AND OBSTRUCTIONS (TRUSS AND TRUNNION POST BASE DEBRIS) LPSM ALL ALL

B0200 63501‐0000 TEMPORARY TRAFFIC CONTROL LPSM ALL ALL

BID

SCHEDULE

PLAN SHEET SECTION ‐‐‐‐‐‐‐‐>>

LINE ITEM

NUMBER PAY ITEM PAY ITEM DESCRIPTION UNIT PLAN

ESTIMATED QUANTITIES

A0100 15101‐0000 MOBILIZATION LPSM ALL ALL

A0150 15201‐0000 CONSTRUCTION SURVEY AND STAKING LPSM ALL ALL

A0200 15401‐0000 CONTRACTOR TESTING LPSM ALL ALL

A0250 27001‐0000 GROUT CUYD 1 1

A0300 41301‐0000 ASPHALT PAVEMENT MILLING SQYD 267 300

A0350 41401‐2000 CRACKS, CLEANING AND SEALING LNFT 3,000 3,000

A0400 41801‐2000 ASPHALT CONCRETE PAVEMENT PATCH, TYPE 2 SQYD 3,000 3,000

A0450 42903‐0000 ULTRA‐THIN BONDED WEARING COURSE (3/4‐INCH DEPTH) SQYD 14,427 16,000

A0500 55220‐0000 REPAIR CONCRETE (TOP OF DECK) SQYD 400 400

A0550 55220‐0000 REPAIR CONCRETE (TOP OF SIDEWALK) SQYD 640 640

A0600 55221‐0000 REPAIR CONCRETE (CONCRETE PEDESTALS) CUYD 1 1

A0650 55235‐0000 EXPANSION JOINT REPAIR (ROADWAY EXPANSION JOINTS) LNFT 960 960

A0700 55236‐0000 EXPANSION JOINT REPAIR (SIDEWALK EXPANSION JOINTS) LPSM ALL ALL

A0750 55501‐0000 STRUCTURAL STEEL (STRINGER 4‐6 REPAIR) LPSM ALL ALL

A0800 55501‐0000 STRUCTURAL STEEL (STEEL BRACKET SUPPORTS, NE BEARING SEAT PLATES, CURB STRINGER STEEL SUPPORT SYSTEM, CATWALK CHANNEL STRENGTHENING, AND OTHER MISCELLANEOUS STRUCTURAL STEEL) LPSM ALL ALL

A0850 55501‐2100 STRUCTURAL STEEL, REPAIR GUSSET PLATE LPSM ALL ALL

A0900 55502‐0000 STRUCTURAL STEEL, FURNISHED, FABRICATED, AND ERECTED (BASCULE SPAN SIDEWALK SUPPORT) LB 16,000 16,000 A0950 55502‐0000 STRUCTURAL STEEL, FURNISHED, FABRICATED, AND ERECTED (SUPPORT COLUMNS) LB 12,000 12,000

A1000 55502‐0000 STRUCTURAL STEEL, FURNISHED, FABRICATED, AND ERECTED (SIDEWALK BEAMS AND FLOORBEAMS AT ALL CORNERS (C10x15.3, C15x33.9, W12x45, HP12x53) AND STRINGER 8‐10 REPAIR) LB 5,600 5,600

A1050 55706‐2000 STRUCTURAL TIMBER AND LUMBER, TREATED (CATWALK AND STAIRS REPAIRS) LPSM ALL ALL A1100 55706‐2000 STRUCTURAL TIMBER AND LUMBER, TREATED (PEDESTRIAN BRIDGE PLANKS) LPSM ALL ALL A1150 55706‐2000 STRUCTURAL TIMBER AND LUMBER, TREATED (TRUNNION PIN SHIMMING) LPSM ALL ALL

A1200 56401‐0000 BEARING DEVICE (SOUTH CENTER LOCK REPAIRS) EACH 1 1

A1250 56401‐1000 BEARING DEVICE, ELASTOMERIC EACH 30 30

A1300 60705‐0000 REPAIRING DRAINAGE STRUCTURE (CATCH BASIN GRATES) EACH 10 10

A1350 60910‐0000 RESET CURB LNFT 120 120

A1400 61901‐1300 FENCE, CHAIN LINK (TEMPORARY), RELOCATION LNFT 1,000 1,000

A1450 61901‐1300 FENCE, CHAIN LINK (TEMPORARY) LNFT 500 500

A1500 63401‐1500 PAVEMENT MARKINGS, TYPE H, SOLID LNFT 5,408 6,000

A1550 63401‐1600 PAVEMENT MARKINGS, TYPE H, BROKEN LNFT 8,656 9,500

A1600 63405‐0050 PAVEMENT MARKINGS, SYMBOLS/WORD EACH 7 7

A1650 63405‐2900 PAVEMENT MARKINGS, TYPE H, TURN ARROW EACH 16 16

A1700 63405‐2950 PAVEMENT MARKINGS, TYPE H, STRAIGHT ARROW EACH 2 2

A1750 63405‐3050 PAVEMENT MARKINGS, TYPE H, "ONLY" WORD MESSAGE EACH 10 10

A1800 63501‐0000 TEMPORARY TRAFFIC CONTROL LPSM ALL ALL

A1850 63701‐0000 FIELD OFFICE EACH 1 1

BID

SCHEDULE

PLAN SHEET SECTION ‐‐‐‐‐‐‐‐>>

LINE ITEM

NUMBER PAY ITEM DESCRIPTION UNIT PLANPAY ITEM

Structure Number

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PROJECT TEAM LEADER

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DATESCALECHECKED BYDRAWN BYDESIGNED BYREVISIONSNO. DATE BY REVISIONS NO. DATE BY

George Choubah BRP-1220

STATE PROJECT

SHEET

NO.

U.S. DEPARTMENT OF TRANSPORTATION

GEORGE WASHINGTON MEMORIAL PARKWAY

REGION

BRP NO.

NPS

NO.

NC FTNP-GWMP 11(6) DC

ARLINGTON MEMORIAL BRIDGE

127169

214695

PMIS NO.

BRIDGE PLAN

No Scale

3300-016P

28 May 2015

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NO. DATE BY REVISIONS NO. DATE BY REVISIONS

GENERAL NOTES AND INDEX

AF/CV LW/BK LW

Structural Steel:

Utilities:

GENERAL NOTES

CL Bascule span

West Leaf East Leaf

BASCULE SPAN KEY

Reinforcing Steel:

Miscellaneous:

Verify locations of utilities in field prior to any work.

Verify all dimensions and locations in the field prior to ordering materials.

R01

(East abutment)

Abutment 2

(West abutment)

Abutment 3

SCOPE OF WORK - NORTHWEST CORNER:

SCOPE OF WORK - NORTHEAST CORNER:

SCOPE OF WORK - SOUTHWEST CORNER:

SCOPE OF WORK - SOUTHEAST CORNER:

SCOPE OF WORK - INSIDE THE BASCULE SPAN:

INDEX OF PLANS

BRIDGE PLAN NO. PLAN TITLE

Furnish Paint System 1.

Paint all structural steel #26420 from the Federal 595B Colors.

to ASTM A490.

Provide high-strength anchor, nuts, and washers comforming

Galvanize all bolts and nuts in accordance with ASTM A153.

Furnish welds conforming to AASHTO/AWS D1.5 Bridge Welding Code.

unless otherwise noted on the plans.

with fasteners conforming to AASHTO M 164, Type 1 (ASTM A325)

All field connections are slip critical, friction type, Class A, made the longitudinal Charpy V-Notch test specified in Section 555.

Provide main load carrying beam members that meet

(ASTM A709, Grade 50) unless otherwise noted on the plans.

Furnish structural steel conforming to AASHTO M 270, Grade 50

Provide 2-in cover for reinforcing steel unless otherwise noted.

Lap splices 32 bar diameters unless otherwise shown.

epoxy-coated.

Furnish reinforcing steel conforming to AASHTO M 31, Grade 60, replace one floorbeam at a time.

Replace four existing floorbeams 12WF45;4.

column to shore the existing 12CB@34.

Install 6-in long HP12X53 on top of the existing3.

Repair sidewalk stringer bearing seats.2.

traffic control plans.

For maintenance of traffic, refer to the1.

Washington, DC 20019

Building 59

3400 Benning Rd, NE

PEPCO Engineering - DCPEPCO address:

concerns during construction.

Distribution - DC, at (202) 388 2563 for any problems or

Contact Mr. Abdulai Kangbo, Sr. Supervising Engineer, PEPCO any on-site support or consultation.

Maintenance and Construction, at (202) 388 2164 for

Contact Mr. Tony Duncan, General Supervisor, Underground construction.

at (202) 388 2137 for any problems or concerns during

Contact Mr. Kenny Payne, General Supervisor of Conduit, and conduits that contain cables.

in close proximity to exposed cables existing under the bridge

Provide protection and exercise extreme caution when working f’c = 5,000 psi at 3 days

Grout f’c = 4,500 psi at 28 days

Class HES

All dimensions are nominal.

Provide pressure treated Douglas Fir No. 1 or No. 2.

Timber:

Material:

HS20 Loading

Live Loads:

Design Loads:

Design: AASHTO LRFD Bridge Design Specifications, Seventh Edition, 2014 and Bridges on Federal Highway Projects, FP-14.

Construction: Standard Specifications for Construction of Roads

Specifications:

SCOPE OF WORK - TOP OF BRIDGE:

replace one floorbeam at a time.

Replace four existing floorbeams 12WF45;4.

column to shore the existing 12CB@34.

Install 6-in long HP12X53 on top of the existing3.

under existing 12CB@34.

Install steel bracket support assembly Type 22.

traffic control plans.

For maintenance of traffic, refer to the1.

East Leaf South Curb Stringer 4-6 Repair - 228

East Leaf South Curb Stringer 4-6 Repair - 127

Miscellaneous Details26

Pedestrian Bridge Timber Deck Plank Replacement25

Top of Sidewalk Repair Details24

Top of Sidewalk Repair Layout - 423

Top of Sidewalk Repair Layout - 322

Top of Sidewalk Repair Layout - 221

Top of Sidewalk Repair Layout - 120

Catwalks and Stairs Repair19

Bascule Span Sidewalk Support - 218

Bascule Span Sidewalk Support - 117

East Leaf - North Bascule Truss Gusset Plate Repair16

Bascule Span Abutment Stringer Supports15

Column Details14

Sidewalk Beam Repair and Replacement Details13

Bascule Span West Abutment Sidewalk Beam Replacement12

Bascule Span East Abutment Sidewalk Beam Replacement11

Northeast Corner Sidewalk Beam and Bearing Repairs10

Southeast and Southwest Corners Sidewalk Beam Repairs 9

Southeast Corner Temporary Support System 8

West Leaf North Curb Stringer 8-10 Repair 7

Northwest Corner Sidewalk Beam Repairs - 2 6

Northwest Corner Sidewalk Beam Repairs - 1 5

Northwest Sidewalk Corner Temporary Support System 4

East Leaf Upper Framing Plan 3

West Leaf Upper Framing Plan 2

General Notes and Index 1 the trunnion post base areas (Schedule B).

bascule trusses, on the trunnion posts, and

Remove debris on the truss members of all9.

and bottom of the deck at all four corners.

Install timber shims between trunnion pin8.

as shown on the plans.

Install steel shims at the south center lock7.

trusses of east and west leaf.

Install sidewalk support over the bascule6.

counterweights in both abutments.

Install roadway stringer supports on top of 5.

in both abutments.

Install new HP12x53 columns under counterweights 4.

and the north truss of east leaf.

Repair the gusset plate connecting brace T-113.

as shown on the plans.

Repair catwalks and stairs in both abutments2.

traffic control plans.

For maintenance of traffic, refer to the1.

the CO using concrete repair material.

Repair concrete deck at locations determined by7.

pedestrian bridges.

Replace damaged timber planks of all temporary6.

shown on the plans.

Repair expansion joints on sidewalks at locations5.

on the plans.

Replace catch basin grates at locations shown4.

the plans using HES concrete.

Repair concrete sidewalk at areas shown on3.

on the plans.

Remove and reset loose granite curb as shown2.

traffic control plans

For maintenance of traffic, refer to the1.

replace one floorbeam at a time.

Replace four existing floorbeams 12WF45;7.

column to shore the existing 12CB@34.

Install 6-in long HP12X53 on top of the existing6.

the existing 12CB@34.

Remove the temporary support system over5.

under the existing 12CB@34.

Install steel bracket support assembly Type 24.

southeast sidewalk over the existing 12CB@34.

Install the temporary support system on the3.

the repair of north curb stringer 8-10 completed.

points 4 and 6. Perform this work as soon as

Repair south curb stringer between panel2.

traffic control plans.

For maintenance of traffic, refer to the1.

replace one floorbeam at a time.

Replace four existing floorbeams 12WF45;8.

and new 15C33.9 under sidewalk.

Install steel bracket support assembly Type 27.

column to shore the existing 12CB@34.

Install 6-in long HP12X53 on top of the existing6.

the existing 18CB@51.

Remove the temporary support system over5.

18CB@51.

2C10x15.3 to provide support under the existing bracket support assembly Type 2, and new

Install steel bracket support assembly Type 1,4.

northwest sidewalk over the existing 18CB@51.

Install the temporary support system on the3.

any other work in this contract.

stringer 8-10. Perform this work prior to

Install double L3x3x3#8 on north curb2.

control plans.

For maintenance of traffic, refer to the traffic 1.

1 06/11/15 LW Revised description from W10x30 to 2C10x15.3

Admendment No. 0002

Structure Number

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PROJECT TEAM LEADER

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DATESCALECHECKED BYDRAWN BYDESIGNED BYREVISIONSNO. DATE BY REVISIONS NO. DATE BY

George Choubah BRP-1220

SHEET

NO.

U.S. DEPARTMENT OF TRANSPORTATION

REGION

BRP NO.

NPS

NO.

NC FTNP-GWMP 11(6) DC

ARLINGTON MEMORIAL BRIDGE

127169

214695

PMIS NO.

BRIDGE PLAN

No Scale

3300-016P

28 May 2015

N

-J u n -2

:4

NO. DATE BY REVISIONS NO. DATE BY REVISIONS

CV AF/BK AF

M

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Pier 6CLCL (Typ.)

Exp. jt.

Pier 6CL

21’-0" x 9"10’-0" x 9"

47’-0"

29’-0"

17’-0"58’-0"

Pier 6CL

Pier 6CL

20’-0" x 4’-0"

25’-0"

CL Pier 5

CL Pier 555’-0"

34’-0"

5’-0" 5’-0"

4’-0"

20’-0" x 4’-0"

To Virginia

To Washington

8’-0"

SIDEWALK AND CURB REPAIR BETWEEN ABUTMENT 4 AND PIER 6

SIDEWALK AND CURB REPAIR BETWEEN PIER 6 AND PIER 5

Sidewalk repair area

S id e w a lk

C u r b

T y p

T y p

See Note 3

See Note 3 See Note 3

(Typ.)

Lamp post

(Typ.)

Catch basin

TOP OF SIDEWALK REPAIR LAYOUT - 1

See Note 1 See Note 1

See Note 1

Expansion joint repair filler) cover plate & asphalt

(Remove north half of

A C

T U

A L F I L E S I D

E W

A L

K R

E P

A I R L

A Y

O U

T .D

G N

R20

Curb reset section

(Typ.)

Manhole

06/11/15

06/11/15

LW

LW Deleted note 4

Deleted 40-ft rail repair from scope of work

Admendment No. 0002 details.

See "BRIDGE RAIL REPAIR" sheet for repair4.

Grates are approximately 1 ft 8 in x 2 ft 8 in.

Replace cast iron catch basin grates in kind.3.

sheet for sidewalk and curb repair details.

See "TOP OF SIDEWALK REPAIR DETAILS"2.

expansion joint repair details.

See "MISCELLANEOUS DETAILS" sheet for1.

Notes:

Rail repair (See Note 4)

Bridge rail repair

–40’-0"

SHEET

NO.

REGION

NPS

NO.

NC FTNP-GWMP 11(6) DC

127169 214695

PMIS NO.

PROJECT TEAM LEADERSCALECHECKED BYDRAWN BYDESIGNED BY

George Choubah No Scale

Structure Number of

DATE

BRP-1220

U.S. DEPARTMENT OF TRANSPORTATION

BRP NO.

ARLINGTON MEMORIAL BRIDGE

BRIDGE PLAN

3300-016P

28 May 2015

ARLINGTON MEMORIAL BRIDGE

Bidders Questions Page 1 of 3

Questions / Clarifications

The following questions and issues were submitted via email at eflhd.contracts@dot.gov. The Government response or clarification is provided. Due to the repetitive nature of several questions and issues, the wording of the questions may have been revised and some questions have not been included. The Government’s direct response to the sender may also have been updated below for better clarity.

1. Please provide an approved area that the contractor can utilize as a designated staging area / office? Please provide an approved designated parking area for the contractors’ employees?

Response: Daingerfield Island (1 Marina Dr., Alexandria VA 22314), approximately 4.8 miles from project site, can be used as staging area/office location. Daingerfield Island can also be used for Contractor employee parking.

Construction equipment can be parked next to the flower bed as shown on Plan Sheet A03 (Location Map).

2. What are the weight restrictions for the bridge?

Response: Weight and distance restrictions for construction vehicles based on a 15-ton construction weight limit have been added to the Special Contract Requirements, SCRs (J Pages of the Solicitation Book) Subsection 104.05.

3. Will the lane closures that are currently in place still be out during the work performed under this contract?

Response: The lane closures currently in place will remain until the steel stringers are repaired. After these repairs are completed, the lane closures will not be needed. However, the Contractor will still need to follow the traffic control plans and maintenance of traffic requirements for the rest of the work required under this contract. Weight restrictions on the bridge will remain in effect even after repairing the steel stringers.

4. The six (6) Structural Steel Bid items shown in the Bid Form (Numbers A0750, A0800, A0850, A0900, A0950 and A1000) are a mixture of Unit Price and Lump Sum items. However some of the noted descriptions in the plans do not clearly match the Bid Item descriptions.

Please provide a table or index that matches the Bid Items with the applicable details in the drawings.

Response: Bid items descriptions are identified throughout the bridge plans. No further table or index will be provided.

mailto:eflhd.contracts@dot.gov

Bidders Questions Page 2 of 3

5. Please confirm if the temporary sidewalk crossing structures removal is included in the scope?

Response: The plans do not call for the removal of the temporary sidewalk bridges. The details and notes included in the plans state the proposed construction method.

6. What safety and environmental precautions are required to work under the bridge prior to the cleaning?

Response: Please refer to Section 203 of FP (standard specifications book) and SCRs for the safety and environmental requirements. Additional requirements for working form the water have been included in the amendment.

7. Please further detail or explain the scope for cleaning under the bridge? Is it the intent that the areas to be cleaned are limited to the work locations detailed in the plans or all debris, paint, bird waste be removed from all structural members, safety fence, stair wells, entire cleaning etc.?

Response: The plans show the locations and requirements for the debris removal. No further detail or explanation will be provided.

8. On sheet 20 of 28, of the Bridge Plans: there is 40 lf of Bridge Rail Repair shown, please provide repair details. Also, what bid item will this be paid under?

Response: Plan Sheet R20 (Top of Sidewalk Repair Layout - 1) has been revised to delete the bridge railing repair work.

9. Due to the nature of the steel members and critical schedule can a field fabrication specification be applied? We propose relaxing the requirement “Fabricate structural steel in a fabricating plant that is certified under the AISC, Quality Certification Program” in Section

555.07 of the standard specification.

Response: Please follow the requirements of the plans and specifications. The Contractor has the option to propose a different solution during construction, subject to the approval of the CO.

10. Is there any restriction against placing a work barge/ work platform under the bascule section of the Arlington Memorial Bridge beyond giving a public notice to mariners?

Response: Restrictions for working in the water have been included by amendment.

11. Are there any active electrical power panels in abutment 2 or 3 available for contractor use?

Response: The electrical power lines are not available for Contractor use. The Contractor will have to furnish their own power.

Bidders Questions Page 3 of 3

12. The timber species specified for the temporary sidewalk bridges is Douglas Fir. Douglas Fir is a very dense wood that does not take pressure treatment. Would the FHWA allow pressure treated Southern Yellow Pine as an alternate species for these boards?

Response: Pressure treated southern pine No. 1 or No. 2 acceptable.

13. The special provisions section 619 indicates a shield material attached to the temporary fence to block the view. We have a stability concern if the panelized temporary fence has a shield on it. The shield material will make the temporary fence unstable and cause more hazards than it protects. Would the FHWA allow a shield material can be removed during non-work hours?

Response: Yes, shield material can be removed during non-work hours.

14. Some of the structural steel repairs require field drilling of existing steel framing. Advise if the existing steel coating is lead based. Should the steel coating be lead based, advise as to specification section for the lead paint removal and how this work is to be measured and paid.

Response: The existing steel coating is lead-based. Apply new paint according to Section

563. Subsection 555.03(b) of the SCRs requires a containment system and worker protection plan for performing field connections to the existing bridge members that contain lead-based paint.

15. Reference sheet no. R10 and existing PEPCO cables. Confirm that PEPCO will de energize the cable in order that the bearing repairs be performed in a safe environment.

Response: The Contractor should be able perform work around existing PEPCO lines without de-energizing the system. As noted in note #6 of Plan Sheet R10, the Contractor has to provide protection and exercise extreme caution when working in close proximity to PEPCO’s energized cables and equipment. Also, there should be no disruption of service to the FAA navigational or sidewalk lighting at any time.