Upper Paris Bridge

Upper Paris Bridge is an historic structure located near the town of Coggon in rural Linn County. The pinned Whipple through truss bridge was built in 1879 as a wagon bridge. As of 1994, it was the longest of only eight pin-connected Whipple through truss bridges surviving in Iowa. It then carried "intermittent" traffic in a setting largely unchanged since 1879. -from Wikipedia