State Route 520 logo

Update: Westbound SR 520 and SR 520 Trail closed across Lake Washington nightly; (Reopens at 8 a.m. Saturday for the UW football game)

Date: Oct 24, 2025 to Oct 26, 2025

Time: 11 p.m. each night (reopens at 8 a.m. Saturday, Oct. 25, for the UW football game)

Activity details:

  • check mark icon Partial highway closure
  • check mark icon Trail or park closure
  • check mark icon Ramp closure
  • check mark icon Nighttime
  • check mark icon Overnight

Impact type:

  • check mark icon Bike/pedestrian
  • check mark icon Traffic

Description: This closure is needed to for punchlist work, signage installation, expansion joint repair and other construction activities as part of the recently completed Montlake Project.

Traffic: SCHEDULE UPDATE: Westbound SR 520 (and its associated on and off-ramps) and the SR 520 Trail will close across Lake Washington between 92nd Avenue Northeast in Clyde Hill to I-5 in Seattle the following times each day: • Friday, Oct 24 closes at 11 p.m. to 8 a.m., Saturday, Oct. 25.* • Saturday, Oct 25: 11 p.m. to noon Sunday, Oct. 26 • Sunday, Oct. 26: 11 p.m. to 5 a.m. Monday, Oct. 27 *Note: crews will begin closing lanes at 10 p.m. and fully close westbound SR 520 at 11 p.m.

Click on image to expand

Contact Info

Email: sr520bridge@wsdot.wa.gov
SR 520 Program information line: 206-200-9484

Note: This tool is presented for planning purposes only. Construction is inherently dependent on weather and other factors, and activities are subject to change.