US 101 - Jefferson and Clallam Counties Fish Barriers - Remove Fish Barriers

Project news

  • This project addresses multiple barriers to fish that travel under US 101 between Sequim and Discovery Bay in Clallam and Jefferson Counties.
  • This is a Design-Build fish project, which means the contractor will help make design decisions which may reduce the overall traffic impacts to the public.
  • Construction is slated to begin summer of 2022 and last through fall of 2023. Any road closures will be announced in advance. Real time travel information is available. 
  • Travelers are encouraged to sign up for email alerts.

Needs & benefits

This project will eliminate six identified barriers for fish and open potential upstream habitat. Also, the work will simulate what is found in a natural stream bed.

Why is WSDOT correcting fish passage barriers under US 101 near Sequim?

Correcting fish passage barriers is an important part of the state's efforts to protect and restore fish runs negatively affected by outdated culverts under state highways. 

In 2013, a federal court injunction required the state to significantly increase the state’s efforts in removing state-owned culverts that block habitat for salmon, bull trout and steelhead.

Replacing the outdated culverts with either bridges or fish passable structures will increase the likelihood of migration through the channel. Fish will be able to pass through creeks easier as the water will be slower simulate a more natural creek environment.

In total, this project will replace six existing culverts beneath US 101 between milepost 267 and 278 that impede fish navigation:

  • M.P. 267.18 – Johnson Creek
  • M.P. 268.54 – Unnamed Tributary to Sequim Bay (Discovery Creek)
  • M.P. 271.83 – Unnamed Tributary to Sequim Bay 2
  • M.P. 271.98 – Chicken Coop Creek
  • M.P. 274.25 – Eagle Creek
  • M.P. 277.90 – Contractors Creek
  • Bridges are proposed at 5 of the 6 locations to replace the outdated culverts that run under the highway and block passage for fish like salmon.
  • Eagle Creek will be corrected with a new concrete box culvert.

Due to the extensive work required, this project will occur over a two-year period. All in-stream work will occur during approved Department of Fish and Wildlife's "Fish Windows" to minimize impacts to aquatic species.

The End Result

The existing stream channels will be graded to simulate natural streambeds for improved fish migration as identified in WSDOT's federal court injunction. The work in all 7 locations will open up several miles of potential upstream habitat for several fish species.


  • Summer 2021 – Project advertised for competitive bidding
  • Winter 2021/2022 - Project awarded
  • Summer 2022 – Construction begins
  • Fall 2023 – Most work complete


Financial Data for PIN 310198W
Funding Source Amount ($ in thousands)
2003 Gas Tax (Nickel Funding) $0
2005 Gas Tax (TPA) $0
Pre-Existing Funds (PEF) $0
CWA $83,761
Total $83,761


Bill Elliott
WSDOT Project Design Engineer

Tina Werner 
Media Relations
WSDOT Olympic Region

US 101 Clallam and Jefferson County fish barrier removal