Advisories/Updates
Construction Closures for Friday, May 10 - Friday, May 17
Regional closures
Friday, May 10
Crews will close three lanes of southbound I-5 on the Ship Canal Bridge from 11:59 p.m. Friday to 6 a.m. Saturday.
SR 99 corridor
Friday, May 17 – Monday, May 20
Crews working on the Mercer Corridor Project will close all lanes of SR 99 between Valley Street and the south end of Battery Street Tunnel from 11 p.m. Friday to 5 a.m. Monday. Following the weekend closure SR 99 will be reduced to two lanes in each … more
Watch us make history
If you haven’t seen the SR 99 tunnel's south-end work zone lately, you should. The progress our crews are making to the west of Seattle’s stadiums is jaw-dropping, and it’s worth taking a look.
If you want to experience tunnel construction in person, the best viewing area is on the bicycle/pedestrian path to the west of the construction zone, between South King and South Atlantic streets. We’ve posted a series of informational signs on the fence along the … more
