CQA Four Mile Bridge
Encyclopedia
The CQA Four Mile Bridge spans the Big Horn River in Hot Springs County, Wyoming. The bridge was erected in 1927-28 by the Charles M. Smith Company and spans 175 feet (53.3 m) with a total length of 295 feet (89.9 m). The rigid 7-panel Pennsylvania through-truss
was nominated for inclusion on the National Register of Historic Places
as one of forty bridges throughout Wyoming that collectively illustrate steel truss construction, a technique of bridge design that has become obsolete since the mid-twentieth century. The bridge rests on concrete piers and abutments and is approached by two Warren pony trusses.
The Four Mile Bridge was placed on the National Register of Historic Places in 1985.
Truss bridge
A truss bridge is a bridge composed of connected elements which may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges...
was nominated for inclusion on the National Register of Historic Places
National Register of Historic Places
The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...
as one of forty bridges throughout Wyoming that collectively illustrate steel truss construction, a technique of bridge design that has become obsolete since the mid-twentieth century. The bridge rests on concrete piers and abutments and is approached by two Warren pony trusses.
The Four Mile Bridge was placed on the National Register of Historic Places in 1985.
External links
- Photographs of the Four Mile Bridge at the National Park Service's NRHP database
- Four Mile Bridge at the Wyoming State Historic Preservation Office