Sound Transit Biddingo #GC 0030-25

Heavy Civil GC/CM Services for W200 Duwamish River Crossing & Aerial Guideway Project

Sound Transit is seeking Heavy Civil General Contractor/Construction Manager (GC/CM) services for the W200 Duwamish River Crossing & Aerial Guideway project in Seattle, WA. - Government Buyer: - Central Puget Sound Regional Transit Authority (Sound Transit) - Project Scope: - Construction of a cable-stayed bridge over the Duwamish River - Elevated guideways through the SODO neighborhood - Retained cut guideway installation near the West Seattle Bridge - Related infrastructure: retaining walls, earthwork, demolition, utility relocations, and site restoration - Services Requested: - Preconstruction services: constructability review, cost estimating, schedule development, value engineering, risk identification - Full construction management and execution - Estimated Contract Value: - $725 million to $900 million for construction - $15 million to $20 million for preconstruction - Notable Requirements: - Complex scheduling and phasing in constrained work zones - Early GC/CM engagement to inform design and mitigate risks - Emphasis on safety, small business inclusion, and labor relations - Coordination with multiple stakeholders - OEMs and Vendors: - No specific OEMs or product part numbers mentioned; focus is on heavy civil construction and management services - Jacobs is named as Designer of Record - Period of Performance: - Preconstruction: estimated 24 months - Construction: estimated 48 months - Total project duration: approximately 6 years

Description

Sound Transit is requesting qualifications and project approach proposals for Heavy Civil General Contractor/Construction Manager (GC/CM) services for the W200 Duwamish River Crossing and Aerial Guideway project. The project involves construction of a cable stayed bridge over the Duwamish River, elevated guideway installations through the SODO neighborhood, and retained cut guideway installation near the West Seattle Bridge in Seattle, WA. The contract includes preconstruction services through 100% design and construction services, with an estimated total contract price between $725 million and $900 million. The procurement is open for bidding with a closing date of July 13, 2026.

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