WSDOT Travel Advisory: Northbound SR 99 First Avenue South bridge in Seattle closed due to a collision Thursday, June 4

Washington State Department of Transportation

Northwest Region – 15700 Dayton Avenue N – Shoreline, WA 98133 – 206-440-4457

TRAVEL ADVISORY
June 4, 2026

Contact: Danielle Morgan, communications, 206-482-2282

Northbound SR 99 First Avenue South bridge in Seattle closed due to a collision Thursday, June 4

SEATTLE – All northbound lanes of State Route 99 on the First Avenue South bridge in Seattle are blocked due to a collision Thursday morning, June 4.

Emergency responders are on the scene. There is no estimated time for when the lanes will reopen.

People traveling through the area should seek alternate routes and expect delays.

Real-time travel information is available from the WSDOT mobile app, the WSDOT Travel Center Map or by signing up for WSDOT's email updates.

Hyperlinks within the release:

• WSDOT mobile app: wsdot.wa.gov/travel/travel-information-phone

• Real-time travel map:  wsdot.com/Travel/Real-time/Map/

• Email updates: public.govdelivery.com/accounts/WADOT/subscriber/new?topic_id=WADOT_727

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WSDOT keeps people, businesses and the economy moving by operating and improving the state's transportation systems. To learn more about what we're doing, go to www.wsdot.wa.gov/news for pictures, videos, news and blogs. Real time traffic information is available at wsdot.com/traffic.