State Route 520 logo

Westbound SR 520 off-ramp to northbound I-5 and E. Roanoke St. closed nightly Nov. 19 & 20

Date: Nov 19, 2025 to Nov 21, 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 the closure to relocate light poles and adjust illumination around the ramp as part of the SR 520 Portage Bay Bridge & Roanoke Lid Project.

Traffic: The westbound SR 520 off-ramp to both northbound I-5 and East Roanoke Street in Seattle will close for construction beginning at 10 p.m. until 6 a.m. on both Wednesday, Nov. 19, and Thursday, Nov. 20. All westbound traffic remaining on SR 520 after the Montlake Blvd. exit will be detoured to exit to southbound I-5.

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.