ALASKA RAILROAD CORPORATION

327 W. Ship Creek Ave.

Anchorage, AK 99501 wallaces@akrr.com

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

ADDENDUM NO. 2

Invitation to Bid (ITB) 26-18-214518 Seward Freight Dock Expansion 1 Construction Alaska Railroad Corporation Date: May 18, 2026

This Addendum is issued to provide clarification in response to bidder questions 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 4, 2026, to June 17, 2026, at 3:00 PM AKST.

QUESTION AND ANSWERS:

1. Where can I find the plan holders list on your web site?

Answered in Addendum No. 1.

2. For bonding/surety reasons, what is the Engineer’s Estimate or budget for the project?

Answered in Addendum No. 1.

3. Corps Permit Page 3 of 9, full length silt curtain used on the south end of the dock expansion between the sheet pile construction and the west side of the sediment groin. If this is a requirement, please explain in further detail. Where, when, to install, when to remove.

A full-length silt curtain must be used on the west side of the sediment groin whenever fill is placed outside of a completed cell in such a way that it contains the work area and prevents an increase in turbidity and sedimentation in open waters.

4. Could the engineer provide an estimated pulling strength required to remove the spin fin piles? Is the thought that these can be pulled without damage?

With the exception of the top of the pile (at the attachment point), the piles shall be pulled without damage. Damaged piles shall be replaced by the contractor at the contractor’s expense.

Extraction is anticipated to be with a vibratory hammer or other non-damaging method, with templates used as appropriate. With a vibratory hammer that has enough eccentric moment to move the pile up and down with adequate amplitude, the pulling force will be much less than the static pulling resistance. Assuming a vibratory hammer, the pullout force will be the dead weight of the elements, plus the remaining skin friction and dynamic forces caused by the hammer. Also, it's important that the pile be allowed to freely rotate as it is being extracted to minimize required extraction forces.

5. Are any of the existing dolphin piles filled with concrete or gravel?

mailto:wallaces@akrr.com

The Dolphin piles are not anticipated to be filled with concrete or gravel, although some material may be present at ends.

6. Several times the Corps permit refers to “in-water work year”. Please define.

Pile-driving and in-water work are anticipated to be constructed within the first year of construction. As such, the Incidental Harassment Authorizations were issued to cover effects to marine mammals from pile driving within the first year of construction. Other timing restrictions are included in the “Project Description & Mitigation Measures” appended to the project’s NEPA Environmental Assessment.

7. 2.1.2 Mitigation Measures 3. Says in-water work will be conducted at the lowest points of the tidal cycle when feasible. Is it reasonable to think piles could be driven and pulled at any tide, some fill operations would be better off at lower tides, filling above the tide levels for the most part?

“In-water work will be conducted at the lowest points of the tidal cycle when feasible.” No further clarification has been provided.

8. Who is responsible for sunflower sea star surveys and relocating them?

To The conference with NMFS regarding potential impacts to sunflower sea stars was conducted in the face on an imminent listing of the species. Per NMFS, the measures included in an Incidental Take Statement become applicable in the event the species becomes listed. Should that occur. The contractor is responsible for surveying and relocating sunflower sea stars, should it be required. For bidding, assume that sea star listing does not occur prior to project completion and any changes will be negotiated when and if sea stars become listed as a protected species.

9. Sheet 5 of 37 shows survey control. Assuming points 601, 602, and 603 are most likely destroyed by the cruise ship dock demolition, are there any replacement control points available?

Pt.601 and Pt.602 can be considered lost. Field investigations from early May indicate that Pt.603, Pt.604 and Pt.507 still exist. More than adequate monuments should exist to recover to establish control values as shown on the Survey Control Document. It is the responsibility of the contractor to recover and densify control as needed for the project. If the contractor is unable to establish control values from the information on Sheet 5, they are to immediately notify the ARRC project manager for information on how to proceed.

10. Could you provide quantities for the Install South Slope Armor Rock, the Install East Slope Riprap, and various layers of fill for the Sheet Pile Dock Extension?

The bidders are responsible for estimating all quantities that are not defined in the Plans. To assist Bidders the 95057 ARRC Dock Sediment Control Groin Plan Set and 99068 Seward Railroad Dock Plan Set 1 are included for reference.

11. Could you provide Sheet 11 of 37 with existing topography, bathymetry shown through the extension area?

This question will be answered in Addendum No. 3.

12. Will you be providing Open Cell Dock construction specifications or do we use the railroad standard specs for piling?

See section 530 of the supplemental specifications to the ARRC SSC.

13. Will Builder’s Risk be required on this project?

Yes. Builder's Risk Insurance shall be required.

14. Will Railroad Protective insurance be required?

Yes. Railroad Protective Insurance shall be required for work within 50’ of the railroad tracks.

15. For the Bid Items No. 2 and 3, Salvaging armor rock, will this be paid by cross section of existing or cross section of the resultant stockpile, or another method?

To Salvaged armor rock will be paid by the survey cross section of the resulting stockpile after salvage.

16. If additional riprap or armor is required, is the existing stockpile at the dock storage area available for use on this project at no cost to the contractor?

The Owner Suppled stockpile discussed in the Invitation to Bid is available for the contractor’s use. No additional stockpiles are available to the contractor.

17. For alternate Item A2 do you have existing depths along the face?

See the bathymetry on sheets 6 & 11 of the Plans.

18. Note on Sheet 23 of 37 says PS27.5 may be substituted with PS31’s. What sheets are allowed to be PS27.5?

Tailwall sheets are allowed to be PS27.5. See Owner Supplied materials in the Invitation to Bid 26-18-214518 on page 24 of 83.

19. Regarding owner furnished sheet piling, are they all PS31 or are there some PS27.5?

All Owner Supplied sheets are PS31.

20. The permit does not allow impact pile driving July 15 to September 15. Am I missing something or will in-water work be allowed year round except for impact pile driving?

A summary of timing restrictions is included in the “Project Description & Mitigation Measures” appended to the project’s NEPA Environmental Assessment.

21. If longer sheet pile is cut for 60’ foot sheets, does the railroad want the cutoffs or will the contractor be required to deal with them?

The contractor is responsible for disposal of sheet pile cutoffs. All Owner Supplied materials not used by the contractor for construction of the project will remain property of the ARRC.

22. What is the pin pile specification, diameter, wall thickness, etc for the fender assemblies?

Pin Piles shall be 24” dia x ¾” th steel pipe piles. Pipe pile specifications shall be per section 715 of the supplemental specifications to the ARRC Specifications.

23. In the past there have been some projects where the question of compatibility between 2 different sheet pile manufactures was an issue. Is that going to be a concern where the expansion ties into the existing X Pile on this project?

The existing dock was constructed with PS31 & PS27.5 sheet pile. Compatibility is not anticipated to be an issue.

24. What is the pin pile specification, diameter, wall thickness, etc for the fender assemblies?

See response to question 22 of this Addendum.

25. In the past there have been some projects where the question of compatibility between 2 different sheet pile manufactures was an issue. Is that going to be a concern where the expansion ties into the existing X Pile on this project?

The existing dock was constructed with PS31 & PS27.5 sheet pile. Compatibility is not anticipated to be an issue.

26. I believe Harris Sand and Gravel replaced a batter pile on the dolphin in 2020. Was the damaged pile pulled in it’s entirety, or was it cut off and replaced with a new spin fin pile?

The damaged pile was cut off at mudline and the new pile driven next to it.

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

Sincerely, Contract Administration Specialist Alaska Railroad Corporation