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 m) with a total length of 295 feet (90 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.[2]
CQA Four Mile Bridge | |
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| Nearest city | Thermopolis, Wyoming |
|---|---|
| Coordinates | 43°36′13″N 108°11′48″W / 43.60361°N 108.19667°W |
| Built | 1927 |
| Built by | Charles M. Smith Company |
| Architectural style | Pennsylvania through truss |
| MPS | Vehicular Truss and Arch Bridges in Wyoming TR |
| NRHP reference No. | 85000423 |
| Added to NRHP | February 22, 1985[1] |
The Four Mile Bridge was placed on the National Register of Historic Places in 1985.[1]
See also
editReferences
edit- ^ a b "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
- ^ Fraser, Clayton B. (May 24, 1982). "National Register of Historic Places Inventory - Nomination Form: CQA Four Mile Bridge". National Park Service. p. 12. Retrieved August 3, 2009.
External links
edit- Photographs of the Four Mile Bridge at the National Park Service's NRHP database
- Historic American Engineering Record (HAER) No. WY-59, "Four Mile Bridge, Spanning Big Horn River on County Road No. 173, Thermopolis, Hot Springs County, WY", 11 photos, 2 data pages, 1 photo caption page
- Four Mile Bridge Archived 2011-06-15 at the Wayback Machine at the Wyoming State Historic Preservation Office
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