Construction crews will block freeway ramps between I-90 and southbound I-5 near the Seattle sports stadiums this weekend, as a two-year expansion joint replacement project continues.

Lane reductions begin at 7:30 p.m. Friday and should end by 5 a.m. Monday.

Drivers passing through downtown should stay to the left side. The right-side collector distributor lanes will be closed off before they reenter I-5, so traffic must either exit east toward I-90 and Bellevue, or use the Dearborn, Fourth Avenue South, or Airport Way exits.

In addition, the I-5 offramp to the West Seattle Bridge and Columbian Way will close overnight from 10 p.m. Friday until 5 a.m. Saturday. Workers will replace a safety barrier damaged in a recent crash, the Washington State Department of Transportation announced.

Closures may occur with short notice on Highway 2 west of Stevens Pass, where an unstable tree from the Bolt Creek fire caused a sudden shutdown Wednesday.

On Friday WSDOT also announced the full weekend closure of Highway 524 (Filbert Road) where it passes beneath I-405 east of downtown Lynnwood. Stormwater drainage construction is planned, and detours will be marked.

And some brief, sudden road closures are expected around Seattle through Saturday, when first lady Jill Biden travels to a Democratic political fundraiser and an event at Seattle Center celebrating military families.

Travelers are encouraged to check the @wsdot_traffic Twitter feed or refer to the statewide traffic conditions map at