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Washington State Department of Transportation
Northwest Region – 15700 Dayton Avenue N – Shoreline, WA 98133 – 206-440-4457
TRAVEL ADVISORY
June 4, 2026
UPDATE: The collision has cleared and all lanes of State Route 99 on the First Avenue South bridge are now open.
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:
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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.
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