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I-90 - Two-Way Transit & HOV Operations - Detour Map

Animation showing the westbound I-90 detour to the express laens

PDF of detour map (163 kb)

UPDATE: The May 12-15 weekend work has been rescheduled to May 19-22 due to forecasted wet weather.

Westbound I-90 will be detoured to the express lanes from 11 p.m., Friday, May 19 to 5 a.m. Monday, May 22. 

Mercer Island Traffic

  • During westbound work drivers heading to Mercer Island must exit at East Mercer Way. There are no westbound exits from the express lanes.
  • During the weekend of May 12-15 crews need to restripe westbound I-90 between East Mercer Way and Island Crest Way. While that work is occurring drivers will not be permitted to proceed across East Mercer Way and temporarily re-enter westbound I-90 to exit at Island Crest Way. Once that work is complete that movement will reopen.
  • If you are traveling from Mercer Island to Seattle you can enter the express lanes at Island Crest Way or 77th Avenue Southeast.

Rainier Avenue Traffic
The exit from westbound I-90 to Rainier Avenue South will be closed. Drivers should follow the signed detour to reach Rainier Avenue South during the closure.

I-90 Trail
There are no impacts to cyclists and pedestrians using the I-90 Trail during the weekend closure.