Tag Archives: Estuary restoration

Duckabush restoration promises major benefits for five species of salmon

An ecosystem-restoration project that would replace two bridges across the Duckabush River and restore a 38-acre estuary on the west side of Hood Canal has moved into the design phase with funding from state and federal governments.

Bridge over the Duckabush River
Photo: Jayedgerton, Wikimedia Commons

The project, which would improve habitat for five species of salmon along with a variety of wildlife, is the subject of a design agreement between the Washington Department of Fish and Wildlife and the U.S. Army Corps of Engineers.

“Projects like this are key to improving the overall health of Hood Canal and Puget Sound,” WDFW Director Kelly Susewind said in a news release. “We have a variety of challenges in conserving our salmon populations, so creating more habitat for juvenile salmon to eat and grow before they journey into open waters is one of the most important things we can do.”

The Duckabush restoration was one of the top projects identified through the Puget Sound Nearshore Ecosystem Restoration Project, or PSNERP, a collaboration among WDFW, the Corps and other partners to determine where restoration dollars would best be spent.

Chinook salmon, the primary prey of the critically endangered Southern Resident orcas, are expected to benefit from improved spawning and rearing habitat in the Duckabush River and estuary. Duckabush chinook are part of the mid-Hood-Canal population, which is among the stocks that have dwindled to low levels, forcing unusual reductions in salmon fishing — not only in Puget Sound but out to the coast.

In addition to chinook, the restoration is expected to benefit chum (both summer and fall populations), pink and coho salmon, along with steelhead.

The Duckabush estuary was bisected years ago when fill material was laid down in the marshlands to form the base of Highway 101. The river was constrained into two small channels spanned by what are now aging bridges. A conceptual design for the restoration project calls for removing the fill along with the two bridges, both considered functionally obsolete, and building a modern 2,100-foot-long bridge to span the restored estuary.

The bridge will be elevated above the existing road level to maintain surrounding elevations. An added benefit to the elevated bridge is that an elk herd in the area will be able to cross the road under the bridge, avoiding hazardous conflicts with traffic that frequently occur now.

The project, including the roadwork and a long list of other changes to restore the estuary (see diagram below), could cost up to $90 million, with 65 percent paid by the federal government. Besides benefitting the ecosystem, the project is expected to improve transportation, decrease flooding and possibly upgrade water quality, according to Seth Ballhorn, nearshore communications manager for WDFW. Valuable shellfish beds in that area have been closed because of pollution, he noted.

Design of the project, including the new bridge, is expected to cost between $7 million and $10 million, with the state’s portion listed in the capital budget now working its way through the Legislature. Bridge design will be under the jurisdiction of the Washington State Department of Transportation.

“We see this as a multi-benefit project,” Ballhorn said. “We are getting more than habitat restoration, and we want the community to get involved and provide input on this effort.”

Public meetings about the project are expected to begin in early summer in Brinnon as part of the state’s environmental review. The design phase is expected to take two to three years.

“It’s great to initiate the design phase with WDFW on a project that will benefit Puget Sound’s chinook and orcas at such a critical time,” said Col. Mark Geraldi, Seattle District commander for the Corps of Engineers.

“In 2016, congress authorized three PSNERP projects that could ultimately restore 2,100 acres of critical habitat,” he said in the news release. “We’ve been working on this for a very long time, and getting to this point is a testament to the hard work and dedication by the federal and state agencies, tribes, academia, and other organizations who’ve been involved.”

The other two top-ranking projects that need further discussion before moving into design involve a 1,800-acre restoration of the Nooksack River estuary and a floodplain/wetland restoration in the North Fork of the Skagit River. See Water Ways, Dec. 17, 2016.

A conceptual map of the Duckabush River estuary project includes a long bridge spanning the estuary (white). Click twice to enlarge.
Graphic: Washington Department of Fish and Wildlife

New Bucklin Hill Bridge helps restore habitat in Clear Creek estuary

Tidal waters in Silverdale flow smoothly in and out of Clear Creek estuary, passing under a new 240-foot-long bridge — a massive structure that has replaced a pair of six-foot culverts.

New Bucklin Hill Bridge Photo: C. Dunagan
New Bucklin Hill Bridge // Photo: C. Dunagan

I visited the site this afternoon, walking over to the bridge from Old Mill Park, and I found the changes startling. Flows of freshwater from Clear Creek joins saltwater that trickles through tidal channels from Dyes Inlet. Tidal shifts are reshaping the estuary, flushing out trapped sediment and leaving deposits of gravel of varying size. When the fall rains come, salmon will be able to linger in the estuary upstream or downstream of the bridge before moving up into the watershed.

Twin culverts before construction begins. Photo: Kitsap County
Twin culverts before construction
Photo: Kitsap County

Traffic across the estuary was shut off for construction a little more than a year ago. Now county officials are planning to celebrate the opening of the new bridge on Friday of next week (July 22). The ceremony, led by Kitsap County Commissioner Ed Wolfe, will begin at 10 a.m. on the east end of the bridge. A Marine Corps honor guard will present the colors, and the Central Kitsap High School marching band will perform.

“We encourage the community to join us in celebrating this special occasion,” Ed stated in a news release. “The new bridge not only addresses traffic needs, but provides additional non-motorized enhancements as well as restoring Clear Creek estuary with the removal of culverts.”

Parking will be available at the former Albertson’s/Haggen grocery store parking lot near the intersection of Bucklin Hill and Mickelberry roads.

The $19.4 million construction project is said to be the largest project of its kind ever undertaken by the county. The bridge allows the roadway to be widened from two to four lanes with a new left-turn lane at Levin Road and a center two-way turn lane elsewhere in the area. The project adds new bike lanes, sidewalks and pedestrian overlooks.

Looking upstream from under the new bridge. Photo: C. Dunagan
Looking upstream from under the new bridge
Photo: C. Dunagan

Kitsap County Public Works has posted a large number of photos showing the progress of construction on its Bucklin Hill Bridge project page.

After the bridge opens, the contractor, Granite Construction, will continue to finish various aspects of the project. Occasional traffic delays can be expected, according to county officials.

Chris Butler-Minor, a master’s degree candidate at Portland State University, is studying the ecological changes resulting from the project with the help of volunteers. They are collecting water samples and monitoring sediments, vegetation and invertebrates.

“It’s a yearlong inconvenience but the outcome will be improved transportation, improved bike and pedestrian access, and the salmon are going to love it,” Chris was quoted as saying in a story by Kitsap Sun reporter Ed Friedrich.

The new Bucklin Hill Bridge opens up the estuary. Photo: C. Dunagan
The new Bucklin Hill Bridge opens up the estuary. // Photo: C. Dunagan