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. Drivers must follow a signed detour using northbound I-5 to Exit 71 for SR 508, then southbound back to US 12.
The closure affects travelers crossing I-5 near milepost 66.5. WSDOT advises slowing down and expecting delays. The detour is in place until Aug. 20, when the repairs conclude.
WSDOT's travel advisory specifies that flaggers will direct traffic during the nightly closures. The repairs are part of ongoing bridge maintenance on US 12.