Washington State is noted for its unique collection of very unusual historic bridges. While pre-1900 truss bridges are exceedingly rare, the state has many relatively young 20th Century riveted metal truss bridges of noteworthy design, and also a collection of cantilever truss bridges with a distinctive design that is dissimilar in visual appearance from the traditional cantilever truss found elsewhere in the United States. Another unusual feature of the state is the unusually large number of riveted truss bridges found on the state's Interstate highways. A number of noteworthy concrete bridges can be found as well, including the nationally significant McMillin Bridge. The state is also known for its unusual heavy concrete floating (pontoon) bridges. The common thread with historic bridges in Washington State is that they tend to be unlike bridges found in any other state.
Select a location to view the available bridges for that location. Select from the interactive map available below, or select from the text list next to the map. On the map, names in blue denote locations that have bridges available to view.
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Pend Oreille County
Walla Walla County