Southbound I-405 will be fully closed from Coal Creek Parkway Southeast to North 30th Street from 11:30 p.m. Friday, Aug. 21, through 4 a.m. Monday, Aug. 24, according to WSDOT. Signed detours will be in place during the closure.
Additional closures include nightly off-ramps and on-ramps near Northeast 85th Street from Aug. 20-22. The SR 224 (Van Giesen) closure in West Richland remains in effect for a new roundabout construction, with detours on local roads. WSDOT notes that the White Pass (milepost 155) closure has alternating flag-controlled traffic and an 11-foot width restriction.
Residents should expect travel delays during the closure windows, with specific impacts on I-405 traffic patterns. The I-405 closure ends Monday morning at 4 a.m. The SR 224 closure is ongoing until further notice.