I-90 & SR 520 construction

Last update: 1:30 p.m. Friday, Aug. 16

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

I-90

SB S Lucile St to Spring St Pavement Repair - #9235

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 2.54
Contact: Mike Askarian, Project Engineer, 206-768-5861
Description: WSDOT contractor crews are replacing broken concrete panels, grinding and repaving southbound I-5 and the collector/distributor between Spring Street and South Lucile Street in Seattle.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

Two-Way Transit & HOV Operations (Stage 3) - #8662

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 2.88 - 9.28
ContactJim Slavicek, Project Engineer, 206-768-5602
Description: WSDOT contractor crews are performing work inside the Mount Baker and Mercer Island Lid tunnels in preparation for the Sound Transit East Link light rail extension.
Project webpage
Work schedule:

  • No lane or ramp closures are scheduled.

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 17 – The Island Crest Way HOV on-ramp to westbound I-90 will close from 7 a.m. to 3 p.m.
  • Saturday, August 17 – The eastbound I-90 HOV off-ramp to Island Crest Way will close from 7 a.m. to 3 p.m.
  • Saturday, August 17 – The HOV lane of eastbound I-90 at the East Channel Bridge will close from 7 a.m. to 3 p.m.
  • Monday, August 19, to the afternoon of Friday, August 23 – The Island Crest Way HOV on-ramp to westbound I-90 will close from 9 a.m. to 3 p.m. daily.
  • Monday, August 19, to the afternoon of Friday, August 23 – The eastbound I-90 HOV off-ramp to Island Crest Way will close from 9 a.m. to 3 p.m. daily.
  • Monday, August 19, to the morning of Tuesday, August 20 – The two left lanes of westbound I-90 at Shorewood Drive will close from 9 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Friday, August 23 – The HOV lane of westbound I-90 at the Floating Bridge will close from 8 p.m. to 5 a.m. nightly.
  • Monday, August 19, to the morning of Friday, August 23 – The right lane of northbound I-5 at the I-90 Interchange will close from 8 p.m. to 5 a.m. nightly.
  • Monday, August 19, to the morning of Friday, August 23 – The right lane of eastbound I-90 at the Floating Bridge will close from 9 p.m. to 5 a.m. nightly.

Maintenance and Mercer Island Lid inspection

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 2.54 - 7.13
Contact: Joseph Calabro, communications, 206-440-4452
Description: WSDOT maintenance crews are inspecting safety systems inside the Mercer Island Lid, cleaning the walls, lights and catch basins inside the Mount Baker Tunnel and cleaning the catch basins on the floating bridge.
Work schedule:

  • High impact: Friday, Aug. 9, to the morning of Saturday, Aug. 10 - All lanes of westbound I-90 between Island Crest Way on Mercer Island and I-5 in Seattle will close from 10 p.m. to 5 a.m. 
    • All ramps to westbound I-90 between Island Crest Way and I-5 will close.
    • The I-90 pedestrian pathway will remain open. 
  • High impact: Saturday, Aug. 17, to the morning of Sunday, Aug. 18 - All lanes of eastbound I-90 between I-5 and Island Crest Way will close from 10 p.m. to 5 a.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
ContactJim Slavicek, Project Engineer, 206-768-5602
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:

  • Monday, August 19, to the morning of Wednesday, August 21 – Up to three right lanes of eastbound I-90 between East Sunset Way and 468th Avenue Southeast will close from 9 p.m. to 6 a.m. nightly. This work is weather-dependent.

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

  • Monday, August 19, to the morning of Tuesday, August 20 – The HOV lane of westbound I-90 between Richards Road and Bellevue Way Southeast will close from 9 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Tuesday, August 20 – The Richards Road on-ramp to westbound I-90 will close from 9 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Tuesday, August 20 – The left lane of westbound I-90 between Richards Road and Bellevue Way Southeast will close from 11 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Tuesday, August 20 – The right lane of westbound I-90 between Richards Road and Bellevue Way Southeast will close from 11 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Tuesday, August 20 – The northbound I-405 ramp to westbound I-90 will close from 10 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Tuesday, August 20 – The southbound I-405 ramp to westbound I-90 will close from 10 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Tuesday, August 20 – The southbound I-405 ramp to the westbound I-90 HOV lane will close from 8 p.m. to 5 a.m.
  • Thursday, August 22, to the morning of Friday, August 23 – The Bellevue Way Southeast on-ramp to eastbound I-90 will close from 10 p.m. to 5 a.m.
  • Monday, August 19, to the evening of Friday, August 23 – Flaggers will alternate traffic on Southeast 30th Street from 6 a.m. to 5 p.m. daily.
  • Monday, August 19, to the evening of Friday, August 23 – 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
ContactJim Slavicek, Project Engineer, 206-768-5602
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 impacts on local residents.
Project webpage
Work schedule:

  • Monday, August 19, to the morning of Tuesday, August 20 – The left lane of westbound I-90 between SR 900 and 150th Avenue Southeast will close from 10 to 5:30 a.m.
  • Monday, August 19, to the morning of Tuesday, August 20 – 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 19, to the morning of Friday, August 23 – The left lane of westbound I-90 between SR 900 and 150th Avenue Southeast will close from 10 to 5:30 a.m. nightly.
  • Monday, August 19, to the morning of Friday, August 23 – 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.
  • Tuesday, August 20, to the morning of Friday, August 23 – The left lane of eastbound I-90 between 150th Avenue Southeast and SR 900 will close from 8 to 2 p.m. nightly.
  • Tuesday, August 20, to the morning of Friday, August 23 – 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.
  • Wednesday, August 21, to the afternoon of Friday, August 23 – The right lane of westbound I-90 between SR 900 and 150th Avenue Southeast will close from 10 a.m. to 4 p.m. daily.
  • Wednesday, August 21, to the morning of Friday, August 23 – The right lane of westbound I-90 between SR 900 and 150th Avenue Southeast will close from 9 p.m. to 5:15 a.m. nightly.
  • Wednesday, August 21, to the afternoon of Friday, August 23 – The right lane of eastbound I-90 between 150th Avenue Southeast and SR 900 will close from 7 a.m. to 3 p.m. daily.

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:

  • Saturday, August 17, to the morning of Monday, August 19 – The right lane of eastbound SR 520 between Montlake Boulevard and the West Highrise will close from 9 p.m. to 5 a.m. nightly.
  • Monday, August 19, to the morning of Friday, August 30 – The right lane of the westbound SR 520 off-ramp to Montlake Boulevard will close from 8 p.m. to 6 a.m. nightly.
  • Monday, August 19, to the morning of Friday, August 23 – The westbound SR 520 off-ramp to Lake Washington Boulevard will close from 10 p.m. to 5 a.m. nightly.
  • Wednesday, August 21, to the morning of Friday, August 23 – The right lane of westbound SR 520 between the West Highrise and Montlake 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: Sound Transit crews are constructing a pedestrian bridge to the Microsoft campus.
Project webpage
Work schedule:

  • Monday, August 19, to the morning of Wednesday, August 21 – All lanes of westbound SR 520 between 148th Avenue Northeast and Northeast 40th Street will close from 11 p.m. to 5 a.m.
  • Monday, August 19, to the morning of Friday, August 23 – The Northeast 40th Street on-ramp to westbound SR 520 will close from 10 p.m. to 5 a.m. nightly.
  • Monday, August 19, to the morning of Friday, August 23 – The westbound SR 520 collector-distributor lane at Northeast 40th Street will close from 10 p.m. to 5 a.m. nightly.