US 12 over I-5 will close one lane nightly from 7:30 p.m. Monday, Aug. 10, to 6 a.m. Thursday, Aug. 20, for bridge repairs, according to WSDOT. Travelers will follow a signed detour using northbound I-5 to Exit 71 for SR 508, then southbound back to US 12.
WSDOT advises drivers to slow down, stay focused, and expect delays. The closure is part of ongoing bridge maintenance work to ensure safe travel over the I-5 crossing.
The project is expected to end by Aug. 20, 2026, at 6 a.m. Drivers should plan for overnight travel disruptions during the work period.