Traffic Highlights

Traffic Highlights

Welcome to your headquarters for viaduct-related traffic information. Major traffic changes are highlighted on this page. To your right are links to a full list of closures, traffic cameras, and other resources to help you find your way. You can also sign up to receive weekly emails about upcoming detours and closures.

  • Construction highlights for Friday, September 12 - Friday, September 19

    SR 99 corridor

    Sunday, Sept. 14 - Tuesday, Sept. 16

    • Crews will close up to two lanes in both directions of SR 99 between South Atlantic and South Spokane streets from 9 p.m. to 5 a.m. each night.

    Wednesday, Sept. 17 - Thursday, Sept. 18

    • Crews will close up to two lanes on northbound SR 99 between the Spokane Street off-ramp and Atlantic Street from 10 p.m. to 5 a.m.


    Saturday, Sept. 13 - Monday, Sept. 15

    • Crews will close both directions of SR 520 between Montlake Boulevard Northeast and I-405 from 9 p.m. Saturday to 5 a.m. Monday.  

    Saturday, Sept. 13 - Monday, Sept. 15

    • The ramp from southbound I-5 to SR 900/Martin Luther King Boulevard South will be closed from 11 p.m. to 5 a.m. each night.


    Saturday, Sept. 13

    • Mercer Corridor Project crews will close one lane in each direction of Mercer Street between  Fifth Avenue North and Ninth Avenue North from 8 a.m. to 5 p.m.  
    — more —

Current Conditions

Get traveler information on your mobile device


iPhone, iPad or Android users


Android app on Google play


Available on the App Store

WSDOT App is now available!

Just type in the term "WSDOT" in Google play or the App Store to download the WSDOT application to get this same great information on your phone.


You can also trying visiting on your mobile device.