SR 202 - Evans & Patterson Creek - Fish Passage

Project news

  • Construction is scheduled to begin in spring 2020.
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WSDOT contractor crews will replace four culverts that pass under State Route 202 between Redmond and Fall City. The culverts for Evans Creek, Patterson Creek and two unnamed tributaries to Patterson Creek pose a barrier for fish migration because the water flows too fast, is too shallow, and /or drops too rapidly.

When the culverts are removed and replaced with fish-friendly structures, miles of rearing and spawning habitat that became inaccessible when the roadway was built will be opened up again. Local stream restoration work, including more natural streambeds and planting of native shrubs and trees, will provide better habitat for the salmon and trout who use the streams, and will also be more inviting to other local wildlife.

Needs & Benefits

  • Environmental: Replacing the culverts restores the creeks to a more natural state and improves passage for fish and aquatic life.
  • Compliance: These culverts are subject to the 2013 U.S. District Court injunction, requiring the state to remove culverts that block fish passage under state roads.


  • October 2018: Project was advertised for competitive bidding.
  • April 2019: Project was awarded to Hamilton Construction Co.
  • Spring 2020: Construction is scheduled to begin. 
  • Fall 2020: Construction is scheduled to be complete.


Financial Data for PIN 120215A, 120215C
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $8,821
CWA $8,082
Total $16,902


Tom Pearce
WSDOT Communications


A small map showing the locations of the Evans and Patterson creeks culverts under SR 202 between Redmond and Fall City, Washington

A small photo showing the culvert that carries Patterson Creek under SR 202 between Redmond and Fall City, Washington