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Posted on: May 15, 2017

Peter Western Bridge Project Update

Updated May 15, 2017.

Project details: In February, 2017, the ravine below the Peter Western Bridge experienced severe erosion caused by a severe winter storm. The erosion undermined the structural integrity of the bridge. The City of Burien was awarded emergency funding to demolish and remove the existing structure; and to construct a replacement bridge, repair damaged stormwater facilities in the ravine, and restore the eroded streambed.

Impact to nearby residents: Between the hours of 7:00 a.m and 10:00 p.m there will be considerable construction noise and activity in preparation for the demolition, and as the site is cleaned up and temporarily stabilized afterwards. 

It is not safe to walk on the bridge while it stands or to go into the ravine, even after the bridge is demolished.


Project timeline:  The demolition project should last about one month, starting late May. We anticipate the new bridge will be open to the public within the next two years.

The project will occur in two phases. Phase 1 will demolish and remove the bridge and temporarily stabilize stormwater facilities and the streambed. Phase 2 will install a permanent replacement bridge, permanent stormwater facility repairs, and restore the streambed and adjoining ravine side slopes.

Contractor(s): The demolition company selected is Rivers Edge Environmental Services, Inc. The bridge design and construction company has not been selected yet.

A few facts about the bridge:
  • Location is the 2200 block of S 116th Street (between Military Rd and 24th Ave S).
  • It was built in 1950.
  • It underwent a seismic retrofit in 1996.
  • It was inspected in June 2016 by King County. The report states that there were no issues with scouring of the hillside.
  • There is an apartment complex as well as a few private residences near the bridge.

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400 SW 152nd St, Suite 300  /  Burien, WA 98166  /  Ph: (206) 241-4647  /  Fax: (206) 248-5539
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