SR 99 closures: Crews will close the viaduct for two of the next three weekends to inspect the structure and reinforce a section above the path of the SR 99 tunnel.
What you need to know about construction
- Current work along SR 99 corridor and on the waterfront.
- How is traffic affected? Check weekly construction closures.
- Learn what to expect long-term with our construction simulations.
New attraction in Pioneer Square
Visit our information center – Milepost 31.
Read complete article at the Washington State Department of Transportation.