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Construction on I-90 & SR 520

Last update: 12:55 p.m. Friday, Feb. 17

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

| I-90 | SR 520 |

I-90

Express Lanes Schedule Changes

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 1.99 8.90
Contact: Nicole Daniels, Communications, 206-440-4479
Description: WSDOT uses the I-90 express lanes to assist the flow of traffic during busy travel times. These lanes are scheduled to move in the direction that will relieve the most congestion from the transportation system.
Express lanes schedule
Work schedule:

  • Tuesday, Feb. 21 – The eastbound Express Lanes between 5th Avenue and the Mount Baker Tunnel will be closed for sign work from 12:30 a.m. to 4 a.m.
  • Thursday, Feb. 23 – The eastbound Express Lanes between 5th Avenue and the Mount Baker Tunnel will be closed for sign work from 12:30 a.m. to 4 a.m.
Two-Way Transit and HOV Operations (Stage 3) - #8662 

Highway: I-90    Region: Northwest    County: King    Location: Milepost(s) 2.48 9.28
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT and Sound Transit contractor crews are adding HOV lanes to both directions of I-90 between Seattle and Bellevue and preparing the center roadway for East Link light rail.
Project website
Work schedule: 

  • Monday, Feb. 20 to the morning of Tuesday, Feb 21 – The right and left lanes of both directions of Interstate 90 at Interstate 5 will be closed for sign work from 9 p.m. to 5 a.m.
  • Monday, Feb. 20 to the morning of Friday, Feb. 24 – The right and left lanes of westbound Interstate 90 at the Mercer Island Tunnel will be closed for electrical work from 9 p.m. to 5 a.m. nightly.
  • Tuesday, Feb. 21 – The eastbound Express Lanes between 5th Avenue and the Mount Baker Tunnel will be closed for sign work from 12:30 a.m. to 4 a.m.
  • Tuesday, Feb. 21 to the morning of Wednesday, Feb. 22 – The right lane of eastbound Interstate 90 at the Rainier Avenue South off-ramp will be closed for sign work from 9 p.m. to 5 a.m.
  • Tuesday, Feb. 21 to the morning of Thursday, Feb. 23 – The right lane of westbound Interstate 90 at the 76th Avenue Southeast on-ramp will be closed for electrical work from 9 p.m. to 5 a.m. nightly.
  • Tuesday, Feb. 21 to the morning of Thursday, Feb. 23 – The 76th Avenue Southeast on-ramp to Interstate 90 will be closed for electrical work from 9 p.m. to 5 a.m. nightly.
  • Wednesday, Feb. 22, to the morning of Thursday, Feb. 23 – The Island Crest Way off-ramp from Interstate 90 will be closed for re-striping from 9 p.m. to 5 a.m.
  • Wednesday, Feb. 22, to the morning of Thursday, Feb. 23 - The right and left lanes of both directions of Interstate 90 at Interstate 5 will be closed for sign work from 9 p.m. to 5 a.m.
  • Thursday, Feb. 23 – The eastbound Express Lanes between 5th Avenue and the Mount Baker Tunnel will be closed for sign work from 12:30 a.m. to 4 a.m.
  • Thursday, Feb. 23 to the morning of Friday, Feb. 24 - The right lane of eastbound Interstate 90 at the Rainier Avenue South off-ramp will be closed for sign work from 9 p.m. to 5 a.m.
Routine Bridge Inspection Work

Highway: I-90    RegionNorthwest    County: King    Location: Milepost(s) 9.10 – 9.70
ContactNicole Daniels, Communications, 206-440-4479
Description: WSDOT maintenance crews will perform bridge inspection at I-90 Mercer Slough Interchange
Work schedule:

  • Saturday, Feb. 25 – The left lane of the onramp from northbound I-405 to westbound I-90 will be closed from 7:30 a.m. to 10 a.m.
  • Saturday, Feb. 25 – The right lane of the off-ramp from eastbound I-90 to southbound I-405 will be closed from 10 a.m. to noon.
  • Sunday, Feb. 26 – The HOV lane of eastbound I-90 between Bellevue Way Southeast and I-405 will be closed from 7:30 a.m. to 11 a.m.
  • Sunday, Feb. 26 – The right lane of eastbound I-90 between Bellevue Way Southeast and I-405 will be closed from 11 a.m. to 1 p.m.
Concrete Pavement Repair Work

Highway: I-90    RegionNorthwest    County: King    Location: Milepost(s) 22.40 – 23.50
ContactNicole Daniels, Communications, 206-440-4479
Description: WSDOT maintenance crews will perform concrete maintenance on I-90 near Preston.
Work schedule:

  • Thursday, Feb. 23 to the morning of Friday, Feb. 24 – The two right lanes of westbound I-90 between Southeast 82nd Street and Raging River will be closed, beginning with the far right lane at 9 a.m. All lanes will reopen at noon Friday.

West Approach Bridge North - #8625 

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 0.88 3.04
Contact: Steve Strand, Project Engineer, 206-770-3565
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.
Project website
Work Schedule:

  • Tuesday, Feb. 21, to the morning of Friday, Feb. 24 – Two right lanes of westbound SR 520 on the floating bridge will be closed from 10 p.m. to 5 a.m. nightly.
Evergreen Point Floating Bridge and Landings Project - #8066

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 3.83 4.59
Contact: Steve Peer, Communications, 206-770-3531
Description: The SR 520 Floating Bridge and Landings project will replace the old SR 520 floating bridge and approaches from the future west approach structure east of Foster Island in Seattle to Evergreen Point Road in Medina.
Project website
Work schedule:

  • No lane or ramp closures are scheduled.
NE 124th St Vic to Tolt River Bridge Paving and ADA Compliance - #8866

Highway: SR 520    Region: Northwest    County: King    Location: Milepost(s) 12.83
Contact: Aleta Borschowa, Project Engineer, 206-768-5601
Description: WSDOT contractor crews are repaving areas of SR 202 in Redmond and between Redmond and Fall City and upgrading 17 pedestrian ramps in Redmond.
Work schedule:

  • No ramp or lane closures scheduled.