Plattsmouth Bridge, Spanning Missouri River at U.S. Highway 34, Pacific Junction, Mills County, IA
Significance: This bridge is historically significant as a regionally important vehicular crossing of the Missouri River and is the oldest extant Missouri River highway bridge in Iowa. Moreover, it is a unique example of a privately financed and operated toll bridge over a major river. It is technologically significant as a noteworthy example of cantilevered truss construction. The Plattsmouth Bridge has been listed in the National Register of Historic Places.
Unprocessed Field note material exists for this structure: N238
Unprocessed Field note material exists for this structure: N660
Survey number: HAER IA-67
Building/structure dates: 1929 Initial Construction