City of Seattle

4th Ave S Over ARGO Bridge Repair

PW#2024-017

Open

Department

Public Works

Mark Nakagawara - Deputy Division Director

Summary

Project Description: This project rehabilitates the existing 4th Ave S over ARGO Bridge pier corbels using a 77 day full closure of the bridge. Work involves crack injection, concrete spall repair, Carbon Fiber Reinforced Polymer strengthening, partial demolition of select corbels, increasing the depth of the concrete overhangs using new reinforced concrete connected to the existing concrete using dowels, additional of external post-tensioning, and replacement of expansion joints. Temporary traffic control and channelization will be required. For the purpose of the Bidder/Subcontractor List, this project includes Rebar Installation and Structural Steel Installation.Engineer's Estimate: $6,700,000 to $7,000,000Project Location: Industrial District along 4th Avenue South over the ARGO Yard; north of S Dawson St and south of S Industrial Way.

Important Dates

Release Date

7/1/2026

Pre-Proposal Date

7/16/2026

Q&A Deadline

7/31/2026

Proposal Deadline

8/5/2026

Contact Information

Project Contact

Kevin Foun

Project Engineer

kevin.foun@seattle.gov

(206) 561-4312

700 5th Ave

Suite 4100

Seattle, WA 98104

Procurement Contact

Ian Hernandez

Sr. Construction Contracting Specialist

ian.hernandez@seattle.gov

(206) 684-0128

700 5th Ave, Ste 4350

Seattle, WA 98104