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.


  • Overnight on-ramp and lane closures on SR 99/Aurora Avenue North set for Monday and Tuesday

    The on-ramp from Denny Way to northbound State Route 99/Aurora Avenue North will close on Monday, April 21, and Tuesday, April 22, from 11:30 p.m. to 5 a.m. Also during those hours, the right northbound lane of Aurora Avenue North will be closed between the Battery Street Tunnel and Valley Street.

    The closures will allow workers to improve street lighting along Aurora Avenue North. The work is part of the SR 99 tunnel’s north access project, which is building the connections between city streets and the future north portal of the SR 99 tunnel.

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  • Construction highlights for Friday, April 18 – Friday, April 25

    Regional

    Friday, April 17 – Saturday, April 18

    • Crews will close the east side of the northbound I-5 collector distributor roadway between James Street and South Jackson Street from 10 p.m. to 7 a.m. each night.
    • Crews will close the ramp from westbound I-90 to the northbound I-5 collector distributor roadway from 10 p.m. to 7 a.m. each night.

     

    SR 99 corridor

    Monday, April 21 – Tuesday, April 22

    • Crews will close the northbound right lane of SR 99 between the south end of the Battery Street Tunnel and Valley Street from 11:30 p.m. to 5 a.m. each night.
    • Crews will close the Denny Way on-ramp to northbound SR 99/Aurora Avenue from 11:30 p.m. to 5 a.m. each night.

     

    Tuesday, April 22 – Thursday, April 24

    • Crews will close one southbound lane of SR 99 between Seneca and Madison streets from 9 a.m. to 3 p.m. each day.
    • The shared-use path on Alaskan Way will be closed between Seneca and Madison streets from 9 a.m. to 3 p.m. each day. Bicyclists and pedestrians will be detoured to the sidewalk on the west side of Alaskan Way.

     

    North

    Monday, April 21 – Friday, April 25

    • Mercer Corridor Project crews will close lanes intermittently on Mercer Street between Second Avenue North and Dexter Avenue North from 9 a.m. to 3 p.m. each day.

     

    Central

    Monday, April 21 – Friday, April 25

    • Crews working for Puget Sound Energy will close the curb lane each day on the east side of Fourth Avenue between Pine Street and Olive Way.

     

    South

    Monday, April 21 – Tuesday, April 22

    • Crews will close the South Atlantic Street overpass from two hours after the Mariners game to 5 a.m. each night.

     

    Wednesday, April 23 – Thursday, April 24

    • Crews will close East Frontage Road from two hours after the Mariners game to 5 a.m. each night.

     

    Until further notice

    • Seattle City Light crews will reduce First Avenue South by one lane in each direction between South Atlantic Street and Railroad Way South from 9 a.m. to 3 p.m. on weekdays, and from 7 a.m. to 4 p.m. on weekends. Crews will not close lanes on days with major events at the stadiums.
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Current Conditions




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