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Weekly update of construction closures in Downtown Seattle and SODO

Last updated:  5:26 p.m., March 28, 2015 

This webpage contains information about WSDOT construction projects affecting vehicle or pedestrian traffic on I-5, SR 99, I-5/I-90 interchange, SR 519 and city streets through downtown Seattle and SODO. The information on this page could change without notice.

Get updates on city of Seattle closures and travel information from the Seattle Department of Transportation.  

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North end  | Central  |  SODO | Regional closures |   

Regional High-Impact Closures

Looking Ahead:  Friday, March 27 through Sunday, March 29

WSDOT: SR 99 North Access Project

    • Northbound and southbound SR 99 will be closed between Western Avenue and Valley Street, beginning 10 p.m. Friday until 5 a.m. Monday.

WSDOT Maintenance

    • Northbound and southbound SR 99 will be closed between Spokane Street and Denny Way from 6 a.m. to 6 p.m. Saturday and possibly Sunday, if needed.
    • Just added:  Two left lanes in the southbound direction and then two right lanes in the northbound direction of the Aurora Bridge will be closed on Saturday, March 28, from 6 a.m. to 6 p.m.

WSDOT: I-90 Two-Way Transit and HOV

    • The westbound mainline of I-90 between Seattle and Bellevue will be closed from 11 p.m. Friday until 5 a.m. Monday. Traffic will be detoured to the Express Lanes during this time.
      • Just added: The only access to Mercer Island will be via E. Mercer Way.  All other westbound Mercer Island exits will be closed.
      • Just added:  In addition, the following ramps will be closed.  Westbound I-90 exit ramps to northbound/southbound Rainier Avenue South and the southbound I-405 HOV ramp to westbound I-90.

 

North End Closures

Last update: 5:26 p.m., 3/28
WSDOT:
SR 99 Tunnel Project 

  • Long-term closure - Sixth Avenue North is closed between Thomas and Republican streets. Sixth Avenue North will reopen in a new configuration after the SR 99 tunnel opens to traffic.
  • Long-term closure - Harrison Street is closed from Aurora Avenue North to Taylor Avenue North.  The street will reopen after the tunnel opens to traffic. 
  • Long-term closure - Republican Street is closed between Aurora Avenue North and Sixth Avenue North.
    • Friday, March 27 through Sunday, March 29 - Northbound and southbound SR 99 will be closed between Spokane Street and Denny Way from 6 a.m. to 6 p.m. Saturday.



Last updated: 10 a.m., 3/13
WSDOT:
SR 99 North Access Project

  • Until further notice - Republican Street from SR 99 and the alley between Dexter Avenue North and Eighth Avenue North will be closed around the clock.
    • Friday, March 27 through Sunday, March 29 - Northbound and southbound SR 99 will be closed between Western Avenue and Valley Street, beginning 10 p.m. Friday until 5 a.m. Monday.



City of Seattle: Mercer Corridor project 

  • Get updates  from the Seattle Department of Transportation on Mercer Corridor Project closures and construction. 

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Central Waterfront Closures    

Last update: 10 a.m., 2/9
WSDOT:
SR 99 Tunnel Project   

  • Parking beneath the viaduct is permanently closed between South King Street and Virginia Street due to tunnel and Elliott Bay Seawall construction.  


City of Seattle: Elliott Bay Seawall


City of Seattle: First Hill Streetcar

 

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SODO Closures

Last update: 11 a.m., 1/9
WSDOT:
SR 99 Tunnel Project

  • No high-impact closures are scheduled at this time.

 

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Regional Closures   


Last update: 10 a.m., 3/16
WSDOT: SR 520 Bridge Replacement and HOV Project

  • No high-impact closures are scheduled at this time.

Last update: 4 p.m., 3/26
WSDOT: I-90 Two-Way Transit and HOV

  • Beginning Tuesday, March 3 - The eastbound I-90 HOV ramp to I-405 will be closed around the clock for 50 continuous days.  It is anticipated to reopen on April 24th.

High-impact closure ahead:

  • Friday, March 27 through Sunday, March 29 - The westbound mainline of I-90 between Seattle and Bellevue will be closed from 11 p.m. Friday until 5 a.m. Monday.  Traffic will be detoured to the Express Lanes during this time.
    • The only access to Mercer Island will be via E. Mercer Way. All other westbound Mercer Island exits will be closed.
    • In addition, the following ramps will be closed. Westbound I-90 exit ramps to northbound/southbound Rainier Avenue South and the southbound I-405 HOV ramp to westbound I-90.


Last update: 10 a.m., 2/9
WSDOT: SR 99 Tunnel Project

  • No high-impact closures are scheduled at this time.

Last update: 4 p.m., 3/26
WSDOT Maintenance 

  • Saturday, March 28 and Sunday, March 29 - Northbound and southbound SR 99 will be closed between Spokane Street and Denny Way from 6 a.m. to 6 p.m. Saturday and possibly Sunday, if needed.
  • Saturday, March 28 - Two left lanes in the southbound direction and then two right lanes in the northbound direction of the Aurora Bridge will be closed from 6 a.m. to 6 p.m.

Last update: 11 a.m., 1/20
I-5 express lanes schedule changes
Get the express lane schedule    

  • No high-impact changes are scheduled at this time.

Last update: 11 a.m., 3/16
I-90 express lanes schedule changes
Get the regular express lanes schedule.      

  • No high-impact changes are scheduled at this time.


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