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Sammamish Bridge Replacement Project

Sammamish Bridge Replacement Project
Posted on 03/22/2019


This project is currently progressing on schedule.  Trail closures will happen regularly between now and project completion, anticipated to be Summer, 2019.  The section of the Sammamish River Trail under the bridge will be closed between 7 a.m. – 3:30 p.m., Monday – Friday. The closure is in effect to safely complete the demolition work for the existing bridge. The trail will be open on weekends and during holidays. Necessary detour signs are in place. 

See the Traffic and Construction Alerts page for updated information regarding road closures.



The Sammamish Bridge Replacement project will widen SR 202 (NE 175th St.) from the intersection of 131st Avenue NE (MP 0.31) to Woodinville-Redmond Road (MP 0.55). This segment of SR 202 will be widened to 4 lanes by constructing a new two-lane bridge adjacent to the existing bridge. Railing and sidewalk modification are also included for the existing bridge. Installation of bike lanes, curb and gutter, sidewalk, storm drainage, traffic signals, railroad signals and gates, street lighting, paving/striping and landscaping are also to be completed with this project.


April 18, 2018 - Summer 2019


  • Working hours
    7AM to 7PM (Monday - Friday) and 9AM to 5PM (Saturdays)
  • Traffic
    SR202 / NE 175th St
    One Lane Closure (Nights) between 131st Ave NE & Woodinville-Redmond Road.  Night Work Hours will be 8:30PM to 5AM (Sunday – Thursday)

    Sammamish River Trail
    Closures of the trail will occur throughout the duration of the project, Monday - Friday, 7 a.m. - 3:30 p.m. A detour has been provided.