State Route 520 logo

Montlake Blvd. on-ramp to westbound SR 520 closed nightly Sept. 3 & 4

Date: Sep 3, 2025 to Sep 5, 2025

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

Activity details:

  • check mark icon Ramp closure
  • 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 pave the temporary haul road located next to the ramp and deliver materials 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 beginning at 10 p.m. until 6 a.m. nightly on Wednesday, Sept. 3 and Thursday, Sept. 4. Traffic wanting to access westbound SR 520 from Montlake during this time will need to use alternate routes.

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.