Washington State Department of Transportation
Northwest Region – 15700 Dayton Avenue – Shoreline, WA 98133 – 206-440-4000
TRAVEL ADVISORY July 30, 2024
Contact: Elizabeth Mount, communications, 206-482-2276
SR 99 tunnel in Seattle to close in both directions Friday night, Aug. 2
SEATTLE – Both directions of the State Route 99 tunnel in Seattle will close for scheduled maintenance from 10 p.m. Friday, Aug. 2, until 6 a.m. Saturday, Aug. 3.
The tunnel closure will allow the Washington State Department of Transportation to conduct several important tasks, including:
- Fire extinguisher inspections.
- Fire sprinkler testing.
- Emergency phone testing.
- Fiber line testing.
- Lighting repairs.
- Camera repairs.
- Sign cleaning.
People traveling through the area Friday night should use alternate routes. Real-time travel information is available via the WSDOT mobile app and the real-time travel map.
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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