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.

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.