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.
Real first and last names — as well as city of residence — are required for all commenters.
This is so we can verify your identity before approving your comment.
By commenting here you agree to abide by our Code of Conduct. Please read our code at the bottom of this page before commenting.