Addendum No. 4 – ITB 26-23-214657 Bridge 158.7 Replacement.pdf

ALASKA RAILROAD CORPORATION

327 W. Ship Creek Ave.

Anchorage, AK 99501 wallaces@akrr.com

Phone (907)265-2425 Cell (907)744-0031

ADDENDUM NO. 4

Invitation to Bid (ITB) 26-23-214657 Bridge 158.7 Replacement Alaska Railroad Corporation Date: July 10, 2026

This Addendum is issued to provide response to bidder questions, clarify the Statement of Work, clarify permitting requirements, and extend the bid opening date. The information contained in this Addendum modifies and becomes a part of the Invitation to Bid and Contract Documents. Bidders shall incorporate all requirements, clarifications, and revisions contained herein into their bid proposal.

The bid closing date has been extended by this Addendum from July 15, 2026, to July 22, 2026, at 3:00

PM AKST.

Section C (Statement of Work): is hereby revised and replaced as set forth in this Addendum. The revised Scope of Work includes clarification of substantial completion date for bridge demolition and replacement activities, railroad flagging responsibilities, and permit acquisition requirements.

REVISED FLAGGING PROVISION

ARRC will provide a Railroad Flagger for track protection, holding authority over the track when able, and communicate train traffic to the contractor for 80 days. Additional time needed to complete track fouling work is the contractor’s responsibility to furnish a flagger through ARRC’s ROW Department.

REVISED COMPLETION DATES

Substantial Completion: Substantial Completion shall be on or before March 31, 2027, unless accepted and agreed upon by the Owner. This completion scope includes all work items contained within the Contract Documents, properly completed, approved by the Owner and fully serviceable for the intended use.

QUESTION AND ANSWERS:

8. (REVISED) Special Provision Contractor Requirements & Section 107-1.02:

The Owner will: 1. Secure permits and licenses specified in the Special Provisions that the Owner determines are required for the construction of the proposed project, and the use of mandatory sources, designated sources and designated material disposal areas for the proposed project;

“The Contractor shall: 1. Acquire any permits and licenses required to complete the project that are not acquired by the Owner;”

There are no permits specified in the Special Provisions or attached to the ITB Documents.

mailto:wallaces@akrr.com

It is also our experience that the Owner obtained permits are the necessary permits and authorizations to allow for the design and construction of the project at time of bid, such as National Environmental Policy Act (NEPA), Section 106 Consultation, State Cultural Resource Investigation Permit (SCRIP), Fish Habitat Permits, Clean Water Act Permits, Wetlands Permits, National Marine Fisheries Service Permits, U.S. Army Corps of Engineers Permits.

It is our experience that “Contractor Permits” are permits such as Storm Water Pollution Prevention Plan (SWPPP), Temporary Water Use Permits (TWUP), Traffic Control Permits

(TCP).

The Contractor has not been part of the ARRC’s discussions and planning with agencies and is not aware of any permits needed beyond the normal SWPPP, TWUP’s and TCP’s that is standard to our work.

a. What necessary permits and/or agency authorizations are required to begin work?

b. Has the ARRC obtained the necessary permits and authorizations for the project to be constructed as designed and advertised?

c. Have Permits and Authorizations been secured for the Temporary Access, shown in the Contract Documents?

“Contractor Permits” are permits such as Storm Water Pollution Prevention Plan (SWPPP), Temporary Water Use Permits (TWUP), Traffic Control Permits (TCP), any noise pollution permits required to work inside the MSB/Wasilla during 12-24 hour work periods.

A. City/borough required permits, SWPPP, TWUP, TCP, and NPP (if required)

B. ARRC is currently pursuing and coordinating required state and federal regulatory authorizations for this project, specifically the Alaska Department of Fish and Game (ADFG), the U.S. Army Corps of Engineers (USACE) Nationwide Permit (NWP) program, and the applicable Floodplain Development Permit authority. Permit review and approval processes are ongoing, and the selected contractor shall comply with all permit conditions upon issuance.

C. See answer above (B & C combined response).

12. Can D1 be used in lieu of C1? We are being told D1 is readily available but C1 will need to be made.

A substitution of D1 for C1 can be approved based on submitted material certifications.

13. Sheet 08 of 12 and Sheet 10 of 12 appear to show the top of riprap at one constant elevation coming around the sheet pile cells, is this the case or is the riprap supposed to follow the ground line coming around and up on the sheet pile cell?

Riprap section needs to follow the groundline around and up the sheet pile cell.

14. Access and Storage

The areas highlighted can be used for staging materials and equipment. No clearing or grubbing is permitted in these areas. The area to the east of the tracks is smaller than highlighted in the question, see the “Area of potential effect” shape in the attached APE Figures dated January 19, 2023.

Please acknowledge receipt of this and all addenda in your firms Supply Bid Form (Form 395-0129).

Sincerely, Contract Administration Specialist Alaska Railroad Corporation

A L

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RA I L R OAD CO

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ALASKA RAILROAD CORP.

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AILROAD CORPORA

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EST. 1914

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BRIDGE 158.7

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COTTONWOOD CREEK

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E. GLENWOOD AVE

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OLD MATANUSKA RD

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(FEET)

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ANCHORAGE, ALASKA 99510-7500

AutoCAD SHX Text 327 W. Ship Creek Avenue

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PROJECT LOCATION WASILLA, AK)

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STATE MAP NTS

AutoCAD SHX Text 1/19/2023

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FIGURE 1 OF 2

AutoCAD SHX Text MP 158.7 COTTONWOOD CREEK BRIDGE AREA OF POTENTIAL EFFECT CONTRACTOR WORK / STAGING AREA

AREA OF POTENTIAL EFFECTS

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RIVERINE WETLAND *

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RIVERINE CHANNEL *

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* WETLANDS SHOWN WERE CAPTURED FROM THE HDR FIELD STUDY JULY, 2024.

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RIPRAP

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ARRC MAINLINE CENTERLINE

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ARRC RIGHT OF WAY

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TEMPORARY FILL

AutoCAD SHX Text P:\PROJECTS\01 PROJECTS\01 BRIDGES & STRUCTURES\BR 158.7\01 PRE CONSTRUCTION\DRAWINGS\MP158.7_IMPACTS_FIGURE.DWG

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DRAWING LOCATION:

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APPLICANT:

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PERMIT NO:

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WATERWAY:

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LOCATION:

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SHEET OFOF

AutoCAD SHX Text DATE: October 31, 2024October 31, 2024

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ALASKA RAILROAD CORPORATION

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LAT: N, LONG: W

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HORIZONTAL DATUM NAD83 AK STATE PLANE 4

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FEET

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EXTENTS OF WETLANDS FIELD STUDY

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COTTONWOOD CREEK

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E GLENWOOD AVE.

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PALMER-WASILLA HIGHWAY

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MP 158.7

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BR 158.7 REPLACEMENT

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FILL IMPACTS

AutoCAD SHX Text 61.5746°

AutoCAD SHX Text 149.4127°

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TBD

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COTTONWOOD CREEK

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SEC 11, T17N, R1W, SM

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MP 158.6

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TYPE A

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VOLUME (CYD)

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AREA (ACRES)

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FILL TYPE

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ABOVE OHW

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BELOW OHW

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ABOVE OHW

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BELOW OHW

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RIPRAP

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AutoCAD SHX Text 0.04

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TEMP. FILL

AutoCAD SHX Text 9,700

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AutoCAD SHX Text 1.30

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TYPE A

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EXCAVATION

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AutoCAD SHX Text 0.04

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BENT

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BRIDGE

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SHEET PILE

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FEET

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CLEARING AND GRUBBING