State Route 520 logo

Westbound SR 520 off-ramp to northbound I-5 and E Roanoke St closed nightly Sept. 17 & 18

Date: Sep 17, 2025 to Sep 19, 2025

Time: 10 p.m. to 6 a.m. the next morning

Activity details:

  • check mark icon Ramp closure
  • check mark icon Nighttime
  • check mark icon Overnight

Impact type:

  • check mark icon Traffic

Description: Crews will use the closure for right-of-way maintenance work related to the SR 520 Portage Bay Bridge and Roanoke Lid Project.

Traffic: The westbound SR 520 off-ramp to both northbound I-5 and East Roanoke Street will close at 10 p.m. on the nights of Wednesday, Sept. 17, and Thursday, Sept. 18. The ramps will reopen by 6 a.m. the following morning. All westbound SR 520 traffic will need to exit either at Montlake Boulevard or will need to take southbound I-5. Please 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.