Project updates
Learn about where and when construction is happening throughout the ST district.
East Link Extension South Bellevue Station

I-405 to westbound I-90 overnight ramp closures

Publish Date

Crews will be closing the I-405 to westbound I-90 ramps and Richards Road onramp to westbound I-90 in order to perform work on the elevated guideway which will bring the future light rail over I-90. The closures will take place overnight, from 9pm to 5am. 

When

Wednesday night, September 30th and Thursday night, October 1st. Each closure will be in effect from 9pm to 5am. 

Where

  • I-405 northbound to westbound I-90 ramp 
  • I-405 southbound to westbound I-90 ramp
  • I-405 southbound to westbound I-90 HOV ramp
  • Richards Rd/ SE 32nd St.to westbound I-90 ramp

More

  • I-405 to I-90 detour: from I-405, drivers should follow detour signs to I-90 east. Exit at 150th Ave SE toward Eastgate Way then proceed to the westbound I-90 exit toward Seattle.
  • Sound Transit's contractor is permitted to work expanded hours in the I-90 corridor and adjacent to Bellevue Way Southeast, including 24-hour work in this area.
  • Plan ahead, leave early and allow extra time to reach your destination. 
  • Due to inclement weather or unforeseen issues, dates and times are subject to change.
Construction closure and detour map for I-405 to I-90 at Richards Rd, South Bellevue Construction Alert