Addendum No.1 – ITB 26-23-214657 Bridge 158.7 Replacement.pdf
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- Attached to
- ITB 26-23-214657 ARRC BRIDGE 158. 7 REPLACEMENT
- Solicitation number
- ITB 26-23-214657 ARRC BRIDGE 158.7 REPLACEMENT
- Issued by
- Anchorage Municipality, Alaska
About this file
This is Addendum No. 1 to an Invitation to Bid (ITB) issued by the Alaska Railroad Corporation (ARRC) for the Bridge 158.7 Replacement project located at Milepost 158.7 near Cottonwood Creek in Wasilla, Alaska. The addendum extends the original bid closing date from June 30, 2026, to July 15, 2026, at 3:00 p.m. AKST and provides clarifications in response to bidder inquiries and notes from the June 23, 2026, site walkthrough. The project involves the complete replacement of an existing six-span timber bridge with a new two-span precast concrete ballast deck bridge on steel pipe piles, including sheet pile abutments, reinforced concrete pile caps, bulkhead and riprap installation, track work, and site restoration. Key specifications clarified in the addendum include: 24-inch diameter pipe (not 16-inch) for specified items, 8-foot tall chain link fence, 9-foot standard Jersey Barriers buried two-thirds of length, bollard pipe piles at 3 feet 7 inches above grade with 8-foot minimum embedment, and modifications to existing timber stringers as needed to accommodate batter pile installation with contractor-engineered solutions subject to ARRC approval. Substantial completion is required by January 30, 2027, with final completion by June 30, 2027, and liquidated damages of $4,900 per calendar day apply for failure to meet the substantial completion deadline.
The addendum clarifies permit responsibilities, establishing that ARRC will secure federal permits (USACE and ADFG permits) and will provide notice to protect or relocate ACS fiber utilities by September 23, 2026. Contractors are responsible for acquiring city and borough permits including Storm Water Pollution Prevention Plans (SWPPP), Temporary Water Use Permits (TWUP), Traffic Control Permits (TCP), and noise pollution permits (NPP) if required for 12-24 hour work periods within the Matanuska-Susitna Borough/Wasilla area. Gate access to the project site through the Wasilla Section is controlled by combination lock, and the gate must be secured when not in use due to theft risks in the area, with incident reports required to state troopers. Bidders must acknowledge receipt of this addendum and all related documents in their bid submission form (Form 395-0129) and submit bids to Sarah Wallace at ARRC, 327 W. Ship Creek Avenue, Anchorage, AK 99501.
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Text version
ALASKA RAILROAD CORPORATION
327 W. Ship Creek Ave.
Anchorage, AK 99501 wallaces@akrr.com
Phone (907)265-2425 Cell (907)744-0031
ADDENDUM NO. 1
Invitation to Bid (ITB) 26-23-214657 Bridge 158.7 Replacement Alaska Railroad Corporation Date: June 24, 2026
This Addendum is issued to provide clarification in response to bidder questions, notes from the site visit, and extend the bid closing date. All other terms and conditions of the referenced solicitation remain unchanged.
The bid closing date has been extended by this Addendum from June 30, 2026, to July 15, 2026, at 3:00
PM AKST.
QUESTION AND ANSWERS:
1. The Sheet 8 of 12 calls out for a Modification of the Existing Span but there are no information or details as to the extent of the Modification required. Please provide details of the modification or As-builts of existing bridge?
To install the batter pile, the timber stringers may need to be modified, and contractors will need to address this in their means and methods with an engineered solution to be presented to and approved by ARRC. ARRC will may also consider a modification to the batter angle of the outer two piles at Bent #2.
2. Will the batter piles and pile driving equipment clear the existing bridge stringers on Bent #2?
Refer to Answer 1.
3. Are there any details on the Pre-Cast Concrete Barrier for the barrier berm?
Standard 9’ Jersey Barriers procured from any of the local precast concrete fabricators are acceptable, buried 2/3 of length.
4. Item 505.005.2 calls for 16” x 0.500”t Pipe, is this supposed to be 24” 0.500”t 24”?
Yes.
5. Is the bollards pipe pile quantity in Item 505.0005.1?
Yes, each bollard will be 3’7” above grade and a minimum embedment of 8’.
mailto:wallaces@akrr.com
6. How tall is the Chain Link Fence supposed to be?
8 feet tall
7. Will you consider extending the bid July 9th, with vacations and the holidays coming up some vendors are short staffed.
Yes. The bid closing date has been extended by this Addendum from June 30, 2026, to July 15, 2026, at 3:00 PM AKST.
8. 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.
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. Federal permits, yes. No local permits are required for work.
C. Federal permits, yes. No local permits are required for work. USACE and ADFG permits are being pursued by ARRC and subject to amendment once the contractor provides their means and methods.
Project Manager Additional Notes from Site Walkthrough (June 23, 2026):
• Utility Coordination, ACS owns the Fiber that is permitted on the ROW and runs across the bridge. In accordance with the permit ACS has with ARRC, we will provide notice to protect or relocate their utilities by September 23rd 2026.
• Gate access through the Wasilla Section to the north end of the bridge will have a combination lock that is known to the contractor and ARRC. The gate needs to be secured when not in use.
Please be advised that the area is prone to theft and reports need to be sent to state troopers.
Please acknowledge receipt of this and all addenda in your firms Supply Bid Form (Form 395-0129).
Sincerely, Contract Administration Specialist Alaska Railroad Corporation
| ADDENDUM NO. 1 |
| QUESTION AND ANSWERS: |
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