Upper Paris Bridge
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The Upper Paris Bridge is a historic structure located near the town of Coggon in rural Linn County, Iowa, United States. The pin-connected Whipple through truss bridge was built in 1879 as a wagon bridge. It was designed by the Wrought Iron Bridge Company of
Canton, Ohio Canton () is a city in and the county seat of Stark County, Ohio. It is located approximately south of Cleveland and south of Akron in Northeast Ohio. The city lies on the edge of Ohio's extensive Amish country, particularly in Holmes and ...
. The bridge was listed on the National Register of Historic Places in 1998 as a part of the ''Highway Bridges of Iowa MPS''. The bridge spans the
Wapsipinicon River The Wapsipinicon River (, locally known as the Wapsi) is a tributary of the Mississippi River, approximately long,U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 13, 2011 starting n ...
in the unincorporated community of
Paris, Iowa Paris is an unincorporated community in Linn County, Iowa, United States. It is located at the intersections of Sutton Road and County Highway D66 (Paris Road) near the banks of the Wapsipinicon River. It is northwest of Central City and southwe ...
. It has a single main span and timber stringer approach spans for a total length of . It cost $4,964.72, to build, of which $3,000 was for the superstructure. Its superstructure is an 11-panel, pin-connected Whipple through truss. The bridge is significant as a "rare example of a double-intersection Pratt truss," which is a kind of
Whipple truss A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units. The connected elements (typically straight) may be stressed from tension, compression, or ...
. Its diagonals extend over two panels, and are made of wrought iron, suited for their being under tension. The Whipple truss design was developed by engineer
Squire Whipple Squire Whipple (September 16, 1804 – March 15, 1888) was an American civil engineer. Biography Squire Whipple was born in Hardwick, Massachusetts on September 16, 1804. His family moved to New York when he was thirteen. He received his seco ...
in 1847. 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. with


See also

*
List of bridges documented by the Historic American Engineering Record in Iowa __NOTOC__ This is a list of bridges documented by the Historic American Engineering Record in the U.S. state of Iowa. Bridges Notes References {{HAER list, structure=bridge *List *List Iowa Iowa () is a state in the Midwestern reg ...


References


External links

* Bridges completed in 1879 Historic American Engineering Record in Iowa National Register of Historic Places in Linn County, Iowa Road bridges on the National Register of Historic Places in Iowa Truss bridges in Iowa Bridges in Linn County, Iowa Wrought iron bridges in the United States Pratt truss bridges in the United States {{Iowa-bridge-struct-stub