Learn about the different types of historic bridges in Washington state, including the locations of the historical bridges and moveable bridges.

Federal and state laws and regulations mandate that the transportation project development process take into consideration cultural resources that may be affected by project activities. This includes impacts to bridges and roadways at least 50 years old and deemed significant according to the National Register of Historic Places (NRHP) criterion for listing. The Washington State Department of Transportation (WSDOT) maintains an inventory of historic bridges and highways that have been evaluated for the NRHP.

In accordance with the National Historic Preservation Act of 1966 (NHPA), its implementing regulation 36CFR800 and 23 U.S.C. 144, WSDOT is required to inventory and assess the eligibility of historic-age bridges for listing in the National Register of Historic Places. Washington state highway bridges built before 1971 have been inventoried and evaluated for listing on the National Register. WSDOT maintains a list of Washington State Historic Highway Bridges that have been recommended, nominated, determined eligible or listed on the NRHP. To determine if your project will impact an NRHP eligible historic bridge, contact your regional CRS to conduct an evaluation. The WSDOT Cultural Resources Compliance Guidance for Historic Bridge Projects (PDF 113KB) provides an illustration and step-by-step guide to the Section 106 and Section 4(f) review process per the Statewide Programmatic Agreement.

The 2005 Section 106 Exemption Regarding Effects to the Interstate Highway System by the Advisory Council of Historic Preservation (ACHP) excludes the majority of Interstate Highway Features from consideration as a historic property under Section 106 of the National Historic Preservation Act (NHPA). Federal Highway Administration (FHWA) maintains a list, by state of Nationally and Exceptionally Significant Features of the Federal Interstate Highway System not subject to the ACHP’s Exemption. This list includes interstate highway bridges and segments of highway containing bridges determined by the FHWA to be of exceptional national significance in Washington state.

The Program Comment for Common Post-1945 Concrete and Steel Bridges issued by the ACHP in 2012 eliminates the historic review requirements under Section 106 of the NHPA for common (mass produced) post-1945 concrete and steel bridges and culverts. The intent of the Program Comment is to streamline the review process for those structures lacking distinction, have not previously been listed or determined eligible for listing on the National Register and are not located in or adjacent to historic districts. A list of exceptions to the Program Comment (Bridge Program Comment Excepted Bridges List), identified by state, include common post-1945 concrete and steel bridges and culverts of exceptional quality that remain subject to Section 106 review.

Federal regulations (23 U.S.C. 144) require WSDOT to provide an opportunity for the adoption or reuse of historic bridges, determined significant according to National Register criteria, and scheduled for replacement. Proposals must demonstrate the recipient can successfully relocate or preserve the bridge in place, to maintain its historic character. Contact Scott Williams, Scott.Williams@wsdot.wa.gov for more information.

This YouTube video Remembering the Ebey Slough Swing Bridge describes how the Ebey Slough Bridge served Snohomish County for 85 years before being replaced in 2012. Of the 16 swing bridges in 1944, only three remain today.

Explore the life of Lacey V. Murrow, the second director of the Washington State Highway Department who was best known for building the historic Lake Washington Floating Bridge, on this YouTube video: They Called Him ‘The Skipper’: The Life and Times of Washington's Lacey V. Murrow.

In the 1920s, it was apparent that the communities of Manette and Bremerton needed a bridge to connect them. High costs prevented financial backing from being offered on a city, state or federal level. Watch this YouTube video and learn about how the bridge came to be built through the collaborative efforts of the city and Navy: The Manette Bridge: Bringing People Together for 81 Years.

For more than eight decades the Meridian Street Bridge over the Puyallup River has served as a portal for cities along the Puget Sound to the community of Puyallup. Significant for its unusual truss configuration using an unusual parabolic top cord truss design, it is the only one of its kind in Washington. Learn more from this YouTube video: The Historic Meridian Street Bridge

Watch a time-lapse video of the historic 1920s era steel bridge as it is lifted and moved about 60 feet to the east: SR 167 Puyallup River Bridge Move.

This YouTube video explores the history of the Simpson Avenue Bridge and the innovative work the WSDOT bridge crews did to repair the bridge with minimal cost and impact to the traveling public: The Simpson Avenue Bridge: A Case Study in Maintenance Success.

The SR 16 Tacoma Narrows Bridge project website provides information on the design, engineering and people responsible for the fateful 1940s bridge known as “Galloping Gertie,” the 1950s replacement and the addition in 2007 of the parallel eastbound bridge. The site includes lesson plans developed for grades 1-4 in Social Studies, Math, Science and Language Arts for educators.

Bridges shown are listed (NR) in the NRHP, determined eligible for listing (NR DE), have been nominated or recommended eligible for inclusion in the NRHP. HAER bridges have been documented by, or for, the Historic American Engineering Record or the Department of Archaeology and Historic Preservation's Level 2. Interstate bridges are FHWA's Features of the Interstate System of Exceptional National Significance.

Bridge sufficiency ratings are shown as FO (Functionally Obsolete), SD (Structurally Deficient or N (Neither or Does Not Apply).

were underway as of December 31, 2021.

in funding for airport investments in Fiscal Year 2022.

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