I-90 & SR 520 construction

Last update: 2:20 p.m. Friday, Aug. 23

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, August 24 – The Island Crest Way HOV on-ramp to westbound I-90 will close from 7 a.m. to 3 p.m.
  • Monday, August 26, to the afternoon of Thursday, August 29 – The eastbound I-90 HOV off-ramp to Island Crest Way will close from 9 a.m. to 3 p.m. daily.
  • Monday, August 26, to the morning of Friday, August 30 – The HOV lane of westbound I-90 at the Floating Bridge will close from 8 p.m. to 5 a.m. nightly.
  • Monday, August 26 – The HOV lane of westbound I-90 at North Mercer Way will close from 10 a.m. to 2 p.m.
  • Tuesday, August 27 – The HOV lane of westbound I-90 between the Mercer Island Lid and the Floating Bridge will close from 10 a.m. to 2 p.m.
  • Friday, August 29 – The HOV lane of westbound I-90 at North Mercer Way will close from 10 a.m. to 2 p.m.

EB Sunset Way I/C to 436th Ave SE I/C Pavement Repair - #9213

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 4.21 - 33.29
ContactJames Harper, Project Engineer, 206-768-5862
Description: WSDOT contractor crews are repairing cracked concrete and replacing select concrete panels on eastbound I-90 between East Sunset Way in Issaquah and 436th Avenue Southeast in North Bend. 
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

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

  • Saturday, August 24, to the evening of Sunday, August 25 – The eastbound I-90 off-ramp to Bellevue Way Southeast will close from 5 a.m. to 9 p.m.
  • Saturday, August 24, to the evening of Sunday, August 25 – The eastbound I-90 HOV off-ramp to Bellevue Way Southeast will close from 5 a.m. to 9 p.m.
  • Sunday, August 25, to the morning of Monday, August 26 – The HOV lane of westbound I-90 between Richards Road and Bellevue Way Southeast will close from 9 p.m. to 5 a.m.
  • Sunday, August 25, to the morning of Monday, August 26 – The Richards Road on-ramp to westbound I-90 will close from 9 p.m. to 5 a.m.
  • Sunday, August 25, to the morning of Monday, August 26 – The left lane of westbound I-90 between Richards Road and Bellevue Way Southeast will close from 11 p.m. to 5 a.m.
  • Sunday, August 25, to the morning of Monday, August 26 – The right lane of westbound I-90 between Richards Road and Bellevue Way Southeast will close from 11 p.m. to 5 a.m.
  • Sunday, August 25, to the morning of Monday, August 26 – The northbound I-405 ramp to westbound I-90 will close from 10 p.m. to 5 a.m.
  • Sunday, August 25, to the morning of Monday, August 26 – The southbound I-405 ramp to westbound I-90 will close from 10 p.m. to 5 a.m.
  • Sunday, August 25, to the morning of Monday, August 26 – The southbound I-405 ramp to the westbound I-90 HOV ramp will close from 8 p.m. to 5 a.m.
  • Wednesday, August 28, to the morning of Thursday, August 29 – The Bellevue Way Southeast on-ramp to eastbound I-90 will close from 10 p.m. to 5 a.m.
  • Monday, August 26, to the evening of Thursday, August 29 – Flaggers will alternate traffic on Southeast 30th Street from 6 a.m. to 5 p.m. daily.
  • Monday, August 26, to the evening of Thursday, August 29 – Flaggers will alternate traffic on Coal Creek Parkway Southeast between 119th Avenue Southeast and 124th Avenue Southeast from 9 a.m. to 3 p.m. daily.

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, August 26, to the morning of Friday, August 30 – The left lane of westbound I-90 between SR 900 and 150th Avenue Southeast will close from 5 p.m. to 5:30 a.m. nightly.
  • Monday, August 26, to the morning of Friday, August 30 – The two left lanes of westbound I-90 between SR 900 and 150th Avenue Southeast will close from 9 p.m. to 5:15 a.m.
  • Monday, August 26, to the morning of Friday, August 30 – The left lane of eastbound I-90 between 150th Avenue Southeast and SR 900 will close from 8 to 2 p.m. nightly.
  • Monday, August 26, to the morning of Friday, August 30 – The two left lanes of eastbound I-90 between 150th Avenue Southeast and SR 900 will close from 9 p.m. to 6 a.m. nightly.

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: WSDOT crews are performing drill work to obtain soil samples.
Work schedule:

  • Friday, August 23, to the morning of Monday, August 26 – One single lane of the westbound SR 520 off-ramp to Montlake Boulevard will close from 9 p.m. to 6 a.m. nightly.
  • Friday, August 23, to the morning of Monday, August 26 – The westbound SR 520 off-ramp to Lake Washington Boulevard will close from 11 p.m. to 5 a.m.
  • Friday, August 23, to the morning of Monday, August 26 – The right lane of the eastbound SR 520 off-ramp to Montlake Boulevard will close from 9 p.m. to 6 a.m. nightly.
  • Friday, August 23, to the morning of Monday, August 26 – The right lane of the Montlake Boulevard on-ramp to eastbound SR 520 will close from 9 p.m. to 6 a.m. nightly.
  • Friday, August 23, to the morning of Monday, August 26 – One single lane of southbound Montlake Boulevard between Lake Washington Boulevard and East Roanoke Street will close from 9 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:

  • Sunday, August 25, to the morning of Friday, August 30 – The 148th Avenue Northeast on-ramp to eastbound SR 520 will close from 10 p.m. to 5 a.m. nightly.
  • Tuesday, August 27, to the morning of Friday, August 30 – The eastbound SR 520 off-ramp to 148th Avenue Northeast will close from 10 p.m. to 5 a.m. nightly.
  • Thursday, August 29, to the morning of Friday, August 30 – The HOV lane and one single lane of eastbound SR 520 between 140th Avenue Northeast and 148th Avenue Northeast will close from 10 p.m. to 5 a.m.

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.
Work schedule:

  • Monday, August 26, to the morning of Friday, August 30 – The Northeast 40th Street on-ramp to westbound SR 520 will close from 10 p.m. to 5 a.m. nightly.
  • Monday, August 26, to the morning of Friday, August 30 – The westbound SR 520 collector-distributor lane at Northeast 40th Street will close from 10 p.m. to 5 a.m. nightly.
  • Monday, August 26, to the morning of Friday, August 30 – The two left lanes in both directions of SR 520 between 148th Avenue Northeast and Northeast 40th Street will close from 10 p.m. to 5 a.m. nightly.