McMillin Bridge, Concrete truss bridge in Pierce County, Washington, US.
McMillin Bridge is a concrete truss structure spanning the Puyallup River in Pierce County, recognized as a historic site. The design features a through-truss system built without overhead lateral bracing, creating a clean structural profile.
The structure was built in 1934 during the Great Depression, representing one of the longest concrete truss spans in the nation at that time. The choice of concrete over steel reflected practical solutions to economic constraints of the era.
The structure represents how engineering innovation shaped local connections across the river during difficult times. It stands as a tangible reminder of the region's ability to invest in infrastructure when resources were scarce.
The crossing sits along State Route 162 and provides vehicle passage over the river for local traffic. It is readily accessible by car and visible to drivers heading through the area on this major route.
The bridge employs a hollow-box system within its concrete structure, an unusual construction approach for this period. This particular design may make it the only bridge of its kind in the country.
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