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
CQA Four Mile Bridge is located in Wyoming
CQA Four Mile Bridge
CQA Four Mile Bridge is located in the United States
CQA Four Mile Bridge
Nearest cityThermopolis, Wyoming
Coordinates43°36′13″N 108°11′48″W / 43.60361°N 108.19667°W / 43.60361; -108.19667
Built1927
Built byCharles M. Smith Company
Architectural stylePennsylvania through truss
MPSVehicular Truss and Arch Bridges in Wyoming TR
NRHP reference No.85000423
Added to NRHPFebruary 22, 1985[1]

The Four Mile Bridge was placed on the National Register of Historic Places in 1985.[1]

See also

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References

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  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
  2. ^ 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.
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