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Construction on I-90 & SR 520

Last update: 9:27 a.m. Friday, August 1, 2014

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

See closures for SR 520.

Last update: 11:54 a.m., 7/10
I-90 express lanes
Get the regular express lanes schedule.

  • Friday, Aug. 1 - The I-90 express lanes will close from 12:15 p.m. to 2:40 p.m. for the Seafair Airshow. Lanes will be open eastbound by 3:00 p.m.
  • Saturday, Aug. 2 - The I-90 express lanes will close from 12:15 p.m. to 2:40 p.m. for the Seafair Airshow. Lanes will be open eastbound by 3:00 p.m.
  • Sunday, Aug. 3 - The I-90 express lanes will close from 12:15 p.m. to 2:40 p.m. for the Seafair Airshow. Lanes will be open eastbound by 3:00 p.m.
  • Saturday, Aug. 9 - The I-90 express lanes will have an added westbound service from 7 a.m. to 6:30 p.m. to accommodate extra traffic headed into Seattle. Lanes will be eastbound by 7:30 p.m.
  • Sunday, Aug. 10 - The I-90 express lanes will have an added westbound service from 7 a.m. to 7:30 p.m. to accommodate extra traffic headed into Seattle. Lanes will be eastbound by 8:30 p.m.
  • Monday, Aug. 11 - The I-90 express lanes will close from 10 a.m. to 2 p.m. for maintenance. Lanes will be eastbound by 2:30 p.m.
  • Sunday, Aug. 17 - The I-90 express lanes will close from 4:30 a.m. to 11 a.m. for a special event. Lanes will be westbound by 11 a.m.
  • Saturday, Aug. 30 to Tuesday, Sept. 2 - The I-90 express lanes will have an added westbound service from 7 a.m. Saturday to 12:30 p.m. Tuesday to accommodate extra traffic headed into Seattle. Lanes will be eastbound by 2 p.m. Tuesday, Sept. 1 

Last update: 12:17 a.m., 7/25
I-90: East Channel Bridge Expansion Joint Replacement #8542
Milepost: 8.84
Hien Trinh, Project Engineer, 206-768-5601
Get project information

  • Monday, July 28 to the morning of Friday, Aug. 1 - The I-90 cyclist/pedestrian trail may close for up to five minutes at a time nightly from 10 p.m. to 5 a.m. for expansion joint replacement work. Users will be stopped at the work zone and then either escorted through or a flagger will direct them to proceed. Delays of less than five minutes are expected. At all time, users should anticipate large steel plates across the path and use caution while crossing them.
  • Monday, July 28 to the morning of Friday, Aug. 1 - The two right lanes of westbound I-90 at the East Channel Bridge will close nightly from 9 p.m. to 5 a.m. so crews can replace two expansion joints under the bicycle/pedestrian path.
  • Thursday, July 31 to the morning of Friday, Aug. 1 - The northbound and southbound I-405 ramps to westbound I-90 will close from 10 p.m. to 5 a.m. for expansion joint repair. Drivers will be detoured east on I-90 to 150th Avenue Southeast and then re-enter westbound I-90.
  • Thursday, July 31 to the morning of Friday, Aug. 1 - The Bellevue Way Southeast on-ramp to westbound I-90 will close from 10 p.m. to 5 a.m. for expansion replacement. All drivers will be detoured to the HOV ramp.

SR 520

Last update: 9:27 a.m., 8/1
SR 520: West Connection Bridge project #8432
Mileposts: 1.96 - 5.17
John Chi, Project Engineer, 425-225-8741
Get Project information

  • *DRIVER ALERT* Monday, Aug. 4 to the morning of Tuesday, Aug. 5 - All lanes of westbound SR 520 between 92nd Avenue Northeast and Montlake Boulevard will close from 11 p.m. to 5 a.m. for concrete pouring work.
  • Tuesday, Aug. 5 to the morning of Friday, Aug. 8 - The right lane of westbound SR 520 between the east highrise and Montlake Boulevard will close nightly from 9 p.m. to 6 a.m. for concrete pouring work.
  • *DRIVER ALERT* Wednesday, Aug. 6 to the morning of Friday, Aug. 8 - All lanes of westbound SR 520 between 92nd Avenue Northeast and Montlake Boulevard will close nightly from 11 p.m. to 5 a.m. for concrete pouring work. 

Last update: 2:30 p.m., 7/29
520: Medina to SR 202 Eastside Transit and HOV project #7963
Milepost: 3.98 – 6.43
Mark Allison , Project Engineer, 425-998-5255
Get Project information

  • Friday, Aug. 1 to the morning of Monday, Aug. 4 - The westbound SR 520 off-ramp to 108th Avenue Northeast will close from 11 p.m. Friday to 5 a.m. Monday for intersection reconstruction.
  • Friday, Aug. 1 to the morning of Monday, Aug. 4 - The 108th Avenue Northeast on-ramps to eastbound and westbound SR 520 will close from 11 p.m. Friday to 5 a.m. Monday for concrete work.
  • Friday, Aug. 1 to the morning of Monday, Aug. 4 - The 108th Avenue Northeast and Northup Way intersection will close 11 p.m. Friday to 5 a.m. Monday for concrete work.
  • *DRIVER ALERT* Friday, Aug. 8 to the morning of Monday, Aug. 11 - Both directions of SR 520 between Montlake Boulevard and I-405 will close from 11 p.m. Friday to 5 a.m. Monday for ramp paving and striping. 

Last update: 9:28 a.m., 8/1
SR 520: 108th Ave NE to W Lake Sammamish Pkwy paving  #8597
Milepost: 6.22 – 11.69
Mark Sawyer, Project Engineer, 425-225-8799
Get Project information

  • Monday, Aug. 4 to the morning of Friday, Aug. 8 - A single lane of eastbound SR 520 between 108th Avenue Northeast and 124th Avenue Northeast will close nightly 9 p.m. to 5 a.m. for pavement repair.
  • Tuesday, Aug. 5 to the morning of Wednesday, Aug. 6 - The southbound and northbound I-405 ramps to eastbound SR 520 will close from 9 p.m. to 5 a.m. for pavement repair work.
  • Tuesday, Aug. 5 to the morning of Wednesday, Aug. 6 - The 124th Avenue Northeast on-ramp to eastbound SR 520 will close from 9 p.m. to 5 a.m. for pavement repair work.
  • Wednesday, Aug. 6 to the morning of Thursday, Aug. 7 - The eastbound SR 520 ramps to northbound and southbound I-405 will close from 9 p.m. to 5 a.m. for pavement repair work.
  • Wednesday, Aug. 6 to the morning of Thursday, Aug. 7 - The 108th Avenue Northeast ramp to eastbound SR 520 will close from 9 p.m. to 5 a.m. for pavement repair work.
  • Friday, Aug. 8 to the morning of Monday, Aug. 11 - The 124th Avenue Northeast ramp to eastbound SR 520 will close from 11 p.m. Friday to 5 a.m. Monday for pavement repair work.