State Route 520 logo

Eastbound SR 520 closed between I-5 and Montlake Blvd. in Seattle Nov. 21-24

Date: Nov 21, 2025 to Nov 24, 2025

Time: 11 p.m. Friday to 5 a.m. Monday

Activity details:

  • check mark icon Full highway closure
  • check mark icon High-impact construction
  • check mark icon Around-the-clock

Impact type:

  • check mark icon Traffic
  • check mark icon Noise

Description: Crews will use the closure to remove portions of the existing bridge barrier and place temporary barrier in its place to make space for a new temporary off-ramp to Montlake Blvd. that eastbound traffic will shift to in 2026. This work is part of the SR 520 Portage Bay Bridge and Roanoke Lid Project.

Traffic: Eastbound SR 520 between I-5 and Montlake Boulevard in Seattle will close for construction beginning at 11 p.m. on Friday, Nov. 21, until 5 a.m. Monday, Nov. 24. Drivers wanting to access eastbound SR 520 from I-5 will need to use alternate routes. Eastbound SR 520 remains open across Lake Washington, it is only the section between I-5 and Montlake Boulevard that will close. Westbound SR 520 and the SR 520 Trail remain open all weekend.

Map showing the closure limits for eastbound SR 520's weekend closure Nov. 21-24
Click on image to expand
Map showing the closure limits for eastbound SR 520's weekend closure Nov. 21-24

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.