WSDOT announced several highway closures effective Monday, Aug. 24.
Northbound I-405 will close for two lanes from milepost 0 to 1.5 nightly from 9 p.m. to 5 a.m. through Wednesday, Aug. 26. Southbound I-405's HOV lane will close nightly from 9:30 p.m. to 5 a.m. through Friday, Aug. 28. SR 9 near Kalloch Road will reduce to one lane with alternating traffic for 42 days until Sept. 14 for fish passage construction.
Drivers should expect delays on I-405 and SR 9. WSDOT's project webpage provides more details on the fish passage work on SR 9.