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WSDOT: emergency fixes reopened 1st Avenue South Bridge; phased panel replacements planned before full deck rebuild
Summary
WSDOT and SDOT told the committee that inspectors found fractured steel deck panels, crews installed temporary steel plates to reopen lanes, and Phase Two will replace ten panels with a full deck replacement expected in 2027; weekend and overnight closures are planned during repairs.
WSDOT and the Seattle Department of Transportation told the Transportation, Waterfront and Seattle Center Committee on April 2, 2026 that emergency repairs completed in March allowed the 1st Avenue South northbound span to reopen, but more work is needed and a full deck replacement is planned for 2027.
WSDOT regional administrator Brian Gillson said late-February inspections identified failures in steel grate deck panels on the northbound bridge. Crews completed Phase One emergency work that installed steel plates and welded cracked grid panels, allowing lanes to reopen with a reduced speed limit.…
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