Starting Thursday night, Sept. 3, up to two lanes of southbound I-405 from milepost 12 to Coal Creek Parkway Southeast will close from 9 p.m. to 5 a.m. until Friday morning, Sept. 4.
I-90 eastbound off-ramp to Factoria Boulevard will close nightly from 9 p.m. to 5 a.m. through Sept. 4. State Route 20 will continue alternating traffic with flaggers from Swin Slough Bridge to Laconner Whitney Road through further notice.
SR 4 will have a single lane closed weekdays from 7:30 a.m. to 5 p.m. through Sept. 11 for gas line work. I-405 northbound lanes will close nightly from 9:30 p.m. to 4:30 a.m. through Sept. 4.