The makings of a PNW autumn include rain and returning salmon

By Olympic Region Communications

Some things in life you can set your watch to – assuming this is something people still do.

As The Byrds sang, “to everything, turn, turn, turn, there is a season turn, turn, turn.” In the Pacific Northwest, that season change means our warm summers eventually fade to autumn. Rain begins to fall, filling our creeks and rivers.

There are other things you can count on in case that old Timex stops ticking: fish.

A chum run unlike any other in Chico Creek

In the waters of the Pacific Northwest fall also means fish runs. This time of year, we see salmon and other fish returning to streams to spawn and start the life cycle all over again. This year, though, we’re seeing something more: a lot of fish at streams where they haven’t been in years. We’ve heard from local communities, crews and co-workers who grew up here that it’s a chum run like they’ve never seen.

Salmon make their way upstream in Chico Creek under the new SR 3 bridge

In recent weeks, this was the case at Chico Creek in Kitsap County. The sight of salmon so thick in the creek brought tears to locals’ eyes.

We’re also happy to see the increased fish runs and to have played a part in their overall return. In many locations our fish passage projects replacing aging culverts that blocked fish migration have let fish swim more freely under state highways.

A team effort at Chico Creek

A case in point is Chico Creek near Bremerton. The restoration of Chico Creek has been decades in the making, led by Suquamish Tribe and Kitsap County. This work was preceded by multiple public projects in Chico Creek’s lower reaches that replaced old bridges with more fish-friendly designs, restored sections of stream bank and protected natural areas along Chico Creek, including Kitsap County’s 30-acre Erlands Point Park.

In 2021, we began a project to build a new bridge on State Route 3. We also began building a new 50-foot-long bridge on Chico Way Northwest. Fast forward to 2024, the project has now opened up nearly 22 miles of potential habitat for fish.

The new bridges now accommodate a rerouted Chico Creek, which flows away from two culverts and beneath the SR 3 bridge. The bridge on Chico Way removes a barrier to a nearby unnamed tributary, which feeds into Chico Creek. In other words, fish have more room and easier access.

Just as in-stream work wrapped up, the rains started to refill those creeks. Like clockwork, the fish have returned.

Salmon run at Chico Creek in October 2024

Our point is, it’s not just WSDOT projects that help restore salmon runs by correcting culverts that are barriers to fish. This particular watershed had, at one point, several barriers further upstream and a barrier downstream. It takes all of us working together to restore watersheds and fish runs.

Culverts under our highway may only be one part of the equation, but it is our duty and responsibility to play our part in restoring these habitats to a more natural state for local salmon. (It is also part of a federal court injunction for WSDOT barriers. Work like this project gets us another step closer to meeting those requirements).

24 for 24

It’s not just Chico Creek where progress is being made removing barriers to fish movement. In 2024, we opened 24 barriers to fish in seven western Washington counties: Pierce, Thurston, Kitsap, Clallam, Jefferson, Grays Harbor and Mason.

We restored access to 76 miles of potential fish habitat. It’s a lot of work for crews. And it meant travelers had to endure detours, slowdowns and delays for this work. Here’s a snapshot of the work completed this year:

SR 16 and SR 302 Spur at Purdy Creek

In Pierce County, we are wrapping up a long-term project at Purdy Creek near Gig Harbor. We started working on SR 16 in fall of 2022 to remove a barrier under the highway. We built two 206-foot-long bridges to replace an outdated culvert. The project removed a second fish barrier under the SR 302 Spur, known locally as Purdy Drive, in 2023. We built a smaller bridge there to replace an outdated culvert. This portion of the project also included a shared-use path for people who walk and roll that was added at the request of the community.

Chum salmon in Purdy Creek at SR 16 in November 2024

SR 108 and US 101 in Mason and Thurston counties

This summer, crews removed barriers to fish at three locations under SR 108 near Kamilche, and under US 101 near the Mason/Thurston County line. The work on SR 108 included separate total closures of the highway in the Kamilche area most of July and August. It required a lengthy detour through US 101 at Mud Bay. On US 101, we kept people moving by reducing US 101 to one lane in each direction. We know detours can be frustrating, but this closure and detour allowed us to complete the overall work much faster, shortening the overall disruptions.

US 101 near Forks

In the Forks area, we started a project in the spring to remove fish barriers under US 101 at five locations. Four of them wrapped up mid-November. We will return in 2025 to complete work at the Wisen Creek site between Forks and Port Angeles. We replaced outdated culverts under the highway with a variety of structures. The most notable is an arch culvert located just south of the Clallam County line in Jefferson County. Our crews used approximately 9,000 bolts to put together the large metal structure.

In summer 2024, we built a large metal arch culvert to replace an outdated culvert under US 101 near Ruby Beach

SR 109 between Seabrook and Hoquiam

People traveling to Pacific Coast beaches this summer encountered multiple detours while crews removed five old culverts that hampered fish movement. Crews had to dig up the entire highway to install the new large concrete structures. These new structures now allow fish to swim under the highway more easily.

US 12 and SR 8 in Grays Harbor County

If you live along US 12/SR 8 in Grays Harbor County or took that route to the coast in the last year, you traveled through five fish passage sites between Olympia and Montesano. We started a project to remove barriers to fish there in fall 2023. While we still have some bridges to finish building, our contractor was able to get all stream work done this past summer. Originally, we expected the stream work to take two summers to complete. This means we will likely wrap up the project well before the end of 2025 as first expected.

Coho salmon swim through the new culvert under SR 8 east of McCleary

Making the highways more resilient

All of these projects built new bridges or installed larger culverts to replace the old culverts that blocked fish habitat. If you’re thinking to yourself, that’s a lot of new structures, we agree. But all of the culverts we are replacing were reaching the end of their useful life.

The new structures allow fish to swim freely under state highways and make our highways more resilient during floods and earthquakes. The new structures are built to current seismic standards. They also reduce flooding by allowing more water to flow under the highway. In turn, this reduces the need for emergency road closures and costly repairs from flood damage.

There is more work ahead in the coming years as we work towards meeting the 2013 federal court injunction.  

We know people had to alter their plans to accommodate the roadwork, and we’re very grateful for the cooperation in that. When you see fish returning to the streams, and you see the end result, we hope you share in the feeling that it’s worth the effort.