SR 518 Tukwila International Boulevard BRT Station Project

The Washington State Department of Transportation is seeking a design-build contractor for the SR 518 Tukwila International Boulevard BRT Station Project, including a new BRT station, pedestrian bridge, and fish passage structure, with an estimated budget of $125-165 million.

Washington > Department of Transportation


General
Open
XE3492
Nov 16, 2026 12:00 PM
Sep 28, 2026 12:00 PM
$165,000,000.00
Disadvantaged Business
Request for Proposal (RFP)
State
Ask AI about this solicitation
Contact
Andrew Ziegler
sr518_tibs@wsdot.wa.gov
+14254502570
Description

The Washington State Department of Transportation (WSDOT) is seeking a design-build contractor for the SR 518 Tukwila International Boulevard Bus Rapid Transit (BRT) Station Project. The project will construct a new BRT station on SR 518 between mileposts 2.49 and 2.91 to connect the existing Tukwila International Boulevard Link light rail station with communities to the south. The project is divided into two scopes: Scope 1 includes roadway modifications, new bus-only lanes, and a pedestrian bridge providing access to the new Stride BRT station and related facilities; Scope 2 includes construction of a new fish barrier correction structure under SR 518. The contract amount is estimated between $125 million and $165 million, with Scope 1 at $100-130 million and Scope 2 at $25-35 million. The project includes federal requirements for on-the-job training hours and Disadvantaged Business Enterprise (DBE) goals.

Classification Codes
NAICS237310Highway, Street, and Bridge Construction
PSC5420Bridges, Fixed and Floating
Smart Codes
bus rapid transit stationpedestrian bridgefish passage structure
Specifications
Service Only
Timeline
Sep 28, 2026-RFQ Release Date
Nov 16, 2026-Close Date
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