I-90 & SR 520 construction

Last update: 8:30 p.m. Thursday, Oct. 10

This information changes frequently. Please check back often. Travelers can also call 5-1-1 for real-time traffic and weather updates.

I-90

Sound Transit's East Link Extension - E130

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 2.54 - 8.84
Contact: Zack Ambrose, Sound Transit, 206-903-7176
Description: Sound Transit crews are constructing the East Link light rail extension from Seattle to Redmond.
Project webpage
Work schedule:

  • Saturday, October 5, to the morning of Sunday, October 6 – The eastbound I-90 HOV off-ramp to Island Crest Way will close from 7 a.m. to 3 p.m.
  • Monday, October 7, to the afternoon of Friday, October 11 – The eastbound I-90 HOV off-ramp to Island Crest Way will close from 9 a.m. to 3 p.m. daily.
  • Monday, October 7, to the afternoon of Friday, October 11 – The Island Crest Way HOV on-ramp to westbound I-90 will close from 9 a.m. to 3 p.m. daily.
  • Monday, October 7, to the morning of Friday, October 11 – The HOV lane of westbound I-90 at the Floating Bridge will close from 8 p.m. to 5 a.m. nightly.
  • Monday, October 7, to the morning of Friday, October 11 – The eastbound I-90 ramp to northbound I-5 will close from 8 p.m. to 5 a.m. nightly.
  • Wednesday, October 9, to the afternoon of Friday, October 11 – The 80th Avenue Southeast HOV on-ramp to eastbound I-90 will close from 10 a.m. to 2 p.m. daily.
  • Monday, Oct. 14, to the morning of Friday, Oct. 18 - The Dearborn Street ramp to northbound I-5 will close from 9 p.m. to 5 a.m. nightly. 
  • Monday, Oct. 14, to the morning of Friday, Oct. 18 - The eastbound I-90 ramp to northbound I-5 will close from 8 p.m. to 5 a.m. nightly. 

Sound Transit's East Link Extension - E320

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 9.14
Contact: Jason Hampton, Sound Transit, 206-903-7177
Description: Sound Transit crews are constructing the East Link light rail extension from Seattle to Redmond.
Project webpage
Work schedule

  • No lane or ramp closures scheduled. 

Eastgate to SR 900 Corridor Improvements - #9429

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 11.55 - 15.52
ContactJames Harper, Project Engineer, 206-768-5862
Description: WSDOT contractor crews are adding capacity on both directions of I-90 between the Eastgate and West Lake Sammamish Parkway interchanges, by restriping the existing roadway and creating auxiliary lanes. Crews are also constructing noise walls in strategic locations within the project area to minimize the effects of traffic noise.
Project webpage
Work schedule:

  • Monday, Oct. 7, to the evening of Thursday, Oct. 10 - The left lane of westbound I-90 between SR 900 and 150th Avenue Southeast will be closed from 10 a.m. to 8 p.m. 
  • Monday, Oct. 7, to the morning of Wednesday, Oct. 9 - The left lane of eastbound I-90 between 150th Avenue Southeast and SR 900 will be closed from 8 to 2 p.m. nightly. 
  • Wednesday, Oct. 9, to the morning of Friday, Oct. 11 - The two left lanes of eastbound I-90 between 150th Avenue Southeast and SR 900 will be closed from 9 p.m. to 5:15 a.m. nightly. This work is weather-dependent. 

SR 520

West Approach Bridge North - #8625

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 0.88 - 3.04
Contact: SR 520 Bridge Replacement & HOV Program, 206-770-3554
Description: The West Approach Bridge North Project is the latest phase of construction of the SR 520 Bridge Replacement and HOV Program and will extend SR 520's three westbound lanes from the new floating bridge to the Montlake area in Seattle.
Work schedule:

  • No lane or ramp closures are scheduled.

Montlake to Lake Washington I/C and Bridge Replacement - #9015

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 0.94 – 1.56
Contact: SR 520 Bridge Replacement & HOV Program, 206-770-3554
Description: The Montlake Project is the first stage of the SR 520 Bridge Replacement and HOV Program that will make key improvements to the Montlake area.
Project webpage
Work schedule:

  • High impact: Friday, Oct. 11, to the morning of Monday, Oct. 14 - All lanes of westbound SR 520 between 92nd Avenue Northeast in Clyde Hill and Montlake Boulevard in Seattle will be closed from 11 p.m. Friday to 5 a.m. Monday.
    • The SR 520 shared-use pathway between 92nd Avenue Northeast in Clyde Hill and Montlake Boulevard in Seattle will close from 11 p.m. to 5 a.m.
  • Saturday, Oct. 12, to the morning of Sunday, Oct. 13 - The left lane of eastbound SR 520 at the west end of the floating bridge will close from 11:59 p.m. to 5 a.m.
  • Monday, Oct. 14, to the afternoon of Thursday, Oct. 17 - Montlake Place E between East Roanoke Street and 24th Avenue East will have alternating traffic from 10 a.m. to 3 p.m. daily. 
  • Monday, Oct. 14, to the morning of Friday, Oct. 18 - The left lane of westbound SR 520 between the west end of the floating bridge and Montlake Boulevard will close from 9 p.m. to 5 a.m. nightly. 
  • Tuesday, Oct.  15, to the morning of Friday, Oct. 18 - The right lane of the Montlake Boulevard on-ramp to eastbound SR 520 will close from 8 p.m. to 6 a.m. nightly. 
  • Tuesday, Oct.  15, to the morning of Friday, Oct. 18 - The right lane of Montlake Boulevard between Hamlin Street and Roanoke Street will close from 10 p.m. to 6 a.m. nightly. 

Sound Transit's East Link Extension - E360

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 7.00 - 9.50
Contact: Ryan Bianchi, Sound Transit, 206-398-5070
Description: Sound Transit crews are constructing the East Link light rail extension from Bellevue to Redmond.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled. 

RTS Microsoft Pedestrian Bridge

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 10.14
Contact: Jay Cooper, WSDOT Regional Transit Coordination, 206-716-1102
Description: Microsoft contractor crews are constructing a pedestrian bridge to the Microsoft campus.
Project webpage.
Work schedule:

  • Monday, October 7, to the morning of Saturday, Oct. 12 – The eastbound SR 520 off-ramp to Northeast 40th Street will close from 10 p.m. to 5 a.m. nightly.
  • Monday, Oct. 14, to the morning of Friday, Oct. 18  - The eastbound SR 520 off-ramp to Northeast 40th Street will close from 10 p.m. to 5 a.m. nightly.
  • Wednesday, Oct. 16, to the morning of Saturday, Oct. 19 - The Northeast 40th Street on-ramp to westbound SR 520 will close from 10 p.m. ro 5 a.m. nightly. 
  • Wednesday, Oct. 16, to the morning of Saturday, Oct. 19 - The westbound SR 520 collector-distributor between Northeast 51st Street and Northeast 40th Street will close from 10 p.m. to 5 a.m. nightly. 

City of Redmond - NE 51st Street Improvement Project

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 10.72
Contact: Eric Dawson, City of Redmond Project Engineer, 425-556-2867
Description: City of Redmond contractor crews are improving signal efficiency and installing bike lanes.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.