Grant Avenue Bridge, Spanning Yakima River at Grant Avenue, Prosser, Benton County, WA
Significance: The Grant Avenue Bridge is significant as the oldest and least altered example of a two span pin-connected Parker truss within the state. It is also the only existing highway bridge within the state that demonstrates the once common practice of erecting a short pony truss approach span in combination with longer through trusses.
Unprocessed Field note material exists for this structure: FN-1
Survey number: HAER WA-4
Building/structure dates: 1911 Initial Construction