I-90 & SR 520 construction

Last update: 7:10 a.m. Friday, Jan. 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:

  • Monday, Jan. 6, to the afternoon of Thursday, Jan. 10 –The eastbound I-90 off-ramp to Island Crest Way will close from 9 a.m. to 3 p.m. daily.
  • Saturday, Jan. 11 to the morning of Sunday, Jan. 12 –The eastbound I-90 off-ramp to Island Crest Way will close from 9 p.m. to 5 a.m.
  • Saturday, Jan. 11, to the morning of Sunday, Jan. 12 – The HOV lane eastbound I-90 between the Mercer Island Tunnel and 77th Avenue will close from 9 p.m. to 5 a.m.
  • Monday, Jan. 13 –The Island Crest Way ramp to the HOV lane on westbound I-90 will close from 9 a.m. to 3 p.m.
  • Monday, Jan. 13 –The eastbound I-90 off-ramp to Island Crest Way will close from 9 a.m. to 3 p.m.
  • Monday, Jan. 13, to the afternoon of Tuesday, Jan. 14 –The East Mercer Way on-ramp and right lane of westbound I-90 will close from 9 a.m. to 3 p.m.
  • Monday, Jan. 13, to the morning of Friday, Jan. 17 – All lanes of the southbound I-5 collector-distributor at I-90 will close from 9 p.m. to 5 a.m. nightly.
  • Saturday, Jan. 18, to the morning of Sunday, Jan. 19 – The HOV lane and left general purpose lane on westbound I-90 between the Mount Baker Tunnel and Rainier Avenue Bridge will close from 9 p.m. to 10 a.m.
  • Monday, Jan. 20, to the morning of Thursday, Jan. 24 – The HOV lane on the westbound I-90 floating bridge will close from 8 p.m. to 5 a.m. nightly.
  • Tuesday, Jan. 21, to the morning of Friday, Jan. 24 – All lanes of the southbound I-5 collector-distributor at I-90 will close from 9 p.m. to 5 a.m. nightly.
  • Thursday, Jan. 23, to the morning of Friday, Jan. 24 - The HOV lane on westbound I-90 will be closed on the floating bridge from 8 p.m. to 5 a.m.

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

  • Friday, Dec. 20, to Friday, May 1 – The Bellevue Way HOV on-ramp to westbound I-90 is closed.

I-90 Et Al Ramp Meter Enhancement​ - #9459

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 8.35
Contact: Evelyn Pao, Project Engineer, 425-495-1577
Description: WSDOT crews work on Mercer Way ramp meter.

Work schedule

  • Tuesday, Jan. 7 to Friday, Jan. 10– The general purpose lane of the Mercer Way on-ramp to eastbound I-90 will be closed from 9 a.m. to 3 p.m. daily.
  • Friday, Jan. 10– The HOV lane of the Mercer Way on-ramp to eastbound I-90 will be closed from 9 a.m. to 3 p.m.
  • Monday, Jan. 13 to the afternoon of Thursday, Jan. 16– The general purpose lane of the Mercer Way on-ramp to eastbound I-90 will be closed from 9 a.m. to 3 p.m. OR
  • Monday, Jan. 13 to the afternoon of Thursday, Jan. 16– The HOV lane of the Mercer Way on-ramp to eastbound I-90 will be closed from 9 a.m. to 3 p.m.

City of Bellevue - I-405 to 132nd Ave SE - Mountains to Sound Greenway Trail

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 9.95
Contact: Chris Masek, City of Bellevue Project Manager, 425-452-4619
Description: City of Bellevue contractor crews are building a pedestrian/bicycle path over Factoria Boulevard and installing additional lanes on the eastbound I-90 off-ramp to Factoria Boulevard.
Project webpage
Work schedule:

  • Saturday, Jan. 4, to the morning of Friday, Jan. 10  The eastbound I-90 off-ramp to Factoria Boulevard will close from 9 p.m. to 5 a.m. nightly.
  • Monday, Jan. 13 to the morning of Friday, Jan. 17 – The eastbound I-90 off-ramp to Factoria Boulevard will close from 9 p.m. to 5 a.m. nightly.
  • Monday, Jan. 20 to the morning of Friday, Jan. 24 – The eastbound I-90 off-ramp to Factoria Boulevard will close from 9 p.m. to 5 a.m. nightly.

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 traffic noise.
Project webpage
Work schedule:

  • Monday, Jan. 13, to the morning of Friday, Jan. 17 – The right lane of westbound I-90 between SR 900 and 150th Avenue SE will close from 10 a.m. to 7 p.m. daily.
  • Monday, Jan. 13, to the morning of Friday, Jan. 17 – The right lane of eastbound I-90 between 150th Avenue SE and SR 900 will close from 7 a.m. to 2 p.m. daily.

I-90/SR 18 Interchange Auxiliary Ramp - #9476

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 25.34 - 25.67
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are modifying the existing Snoqualmie Parkway/SR 18 on-ramp to westbound I-90.
Work schedule:

  • No lane or ramp closures scheduled. 

SR 520

Emergency sign bridge repair

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 0.0 - 0.94
Contact: Joseph Calabro, Communications, 206-440-4452
Description: WSDOT maintenance crews are removing a damaged sign bridge just west of Montlake Boulevard and installing temporary signage.
Work schedule:

  • High impact: Thursday, Jan. 9, to the morning of Friday, Jan. 10 Both directions of SR 520 between I-5 and Montlake Boulevard will close from 9 p.m. to 5 a.m. The following ramps will also close during this time:  
    • The I-5 ramps to and from SR 520.
    • The eastbound SR 520 off-ramp to Montlake Boulevard.
    • The Montlake Boulevard on-ramp to westbound SR 520.
    • The Montlake Boulevard on-ramp to eastbound SR 520 will remain open.
    • The westbound SR 520 off-ramp to Montlake Boulevard will remain open. 

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:

  • Monday, Jan. 6, to the morning of Friday, Jan. 10– The westbound SR 520 off-ramp to Montlake Boulevard will close from 10 p.m. to 6 a.m. nightly.
  • Monday, Jan. 6, to the morning of Friday, Jan. 10 – The left lane of westbound SR 520 just east of Lake Washington Boulevard and east of Portage Bay will close from 9 p.m. to 5 a.m. nightly.
  • Monday, Jan. 13, to the morning of Friday, Jan. 17 – The westbound SR 520 off-ramp to Montlake Boulevard will close from 10 p.m. to 6 a.m. nightly.
  • Monday, Jan. 20, to the morning of Friday, Jan. 24 – The westbound SR 520 off-ramp to Montlake Boulevard will close from 10 p.m. to 6 a.m. nightly.
  • Monday, Jan. 13, to the morning of Friday, Jan. 17 – The right lane of eastbound SR 520 between West Highrise and the Evergreen Point Floating Bridge will close from 9 p.m. to 5 a.m. nightly.
  • Monday, Jan. 13, to the morning of Friday, Jan. 17 – The right lane of westbound SR 520 between the Evergreen Point Floating Bridge and West Highrise will close from 9 p.m. to 5 a.m. nightly.
  • Monday, Jan. 20, to the morning of Friday, Jan. 24 – The left lane of westbound SR 520 between Portage Bay and Lake Washington Boulevard will close from 9 p.m. to 5 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, Jan. 13 to the morning of Saturday, Jan. 18 – The left two lanes on westbound SR 520 between 148th Avenue Northeast and Northeast 40th Avenue 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.

Sound Transit's Redmond Link Extension - R200

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 12.19 - 12.83
Contact: Ryan Bianchi, Sound Transit, 206-398-5070
Description: Sound Transit crews are constructing the Redmond Link light rail extension from Bellevue to Redmond.
Project webpage
Work schedule:

  • Tuesday, Jan. 21, to the morning of Saturday, Jan. 25 – The right lane of the 51st Street on and off-ramps from both directions of SR 520 will close from 8 p.m. to 5 a.m. nightly.