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Bill Dawson Trail closed for construction until 2030 beginning May 12, 2025

Date: May 12, 2025 to May 13, 2030

Time: 24 hours a day, 7 days a week

Activity details:

  • check mark icon Trail or park closure
  • check mark icon High-impact construction
  • check mark icon Around-the-clock

Impact type:

  • check mark icon Bike/pedestrian
  • check mark icon Noise
  • check mark icon Vibration

Description: Crews will use the 5-year Bill Dawson Trail closure to build a haul route, in the footprint of the trail, for the North work trestle as part of the SR 520 Portage Bay Bridge & Roanoke Lid Project.

Traffic: Crews will close the Bill Dawson Trail - from the east end of the new pedestrian tunnel under Montlake Boulevard to the Montlake Playfield - for five years beginning as early as Monday, May 12, 2025 until 2030. During the closure, crews will build a haul road over the footprint of the trail so construction crews and their equipment can safely access the work trestle to build the new bridges. A detour for those biking, walking or rolling is shown above. Users of the trail are encouraged to visit the Portage Bay section of this website (under the "Construction Project" tab) and click on the "Bill Dawson Trail FAQ" at the bottom of the page or via www.bit.ly/BDTClosureFAQ for more detailed information on the closure.

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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.