State Route 520 logo

Montlake Blvd. on-ramp to westbound SR 520 closed nightly Oct. 7-9

Date: Oct 7, 2025 to Oct 9, 2025

Time: 10 p.m. to 6 a.m. nightly

Activity details:

  • check mark icon Ramp closure
  • check mark icon High-impact construction
  • check mark icon Nighttime
  • check mark icon Overnight

Impact type:

  • check mark icon Traffic
  • check mark icon Noise

Description: Crews will use this closure to relocate several light poles between the westbound and eastbound ramps as part of the SR 520 Portage Bay Bridge and Roanoke Lid Project.

Traffic: The Montlake Blvd. on-ramp to westbound SR 520 will close for construction nightly from 10 p.m. to 6 a.m. on Tuesday, Oct. 7 through the night of Thursday, Oct. 9. Traffic from Montlake Blvd. wanting to access I-5 via SR 520 will need to use alternate routes. Traffic already on westbound SR 520 prior to Montlake will still be able to access northbound I-5 and E. Roanoke St. on Oct. 7, but will be detoured to southbound I-5 or need to exit at Montlake Blvd. on the nights of Oct. 8 and 9 when the ramp to northbound I-5 and E. Roanoke St. is closed. See the Construction Corner entry for more details on that closure.

Contact Info

Email: sr520bridge@wsdot.wa.gov
24-hour construction hotline: 206-319-4520

Note: This tool is presented for planning purposes only. Construction is inherently dependent on weather and other factors, and activities are subject to change.