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Yes, I want to support MLTnews!Both directions of the State Route 99 tunnel in Seattle will close for scheduled maintenance 10 p.m. Friday, April 5 until 6 a.m. Saturday, April 6.
The tunnel closure will allow the Washington State Department of Transportation to conduct several important tasks, including:
- Replacing light bulbs.
- Cleaning sediment tanks.
- Repairing expansion joints.
- Roadway camera, jet fan and fire extinguisher maintenance.
- Changing air filters.
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.
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