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CQA Four Mile Bridge
U.S. National Register of Historic Places
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Nearest city	Thermopolis, Wyoming
Coordinates	43°36′13″N 108°11′48″W / 43.60361°N 108.19667°W / 43.60361; -108.19667
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

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.

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

See also

• List of bridges documented by the Historic American Engineering Record in Wyoming

References

1. ^ "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.

External links

• 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

v t e National Register of Historic Places in Hot Springs County, Wyoming
Historic district	Downtown Thermopolis Historic District
Historic properties	Bates Battlefield Callaghan Apartments CQA Four Mile Bridge EFP Bridge over Owl Creek Alex Halone House Kirby Jail and Town Hall Legend Rock Petroglyph Site US Post Office-Thermopolis Main Woodruff Cabin Site
See also: National Register of Historic Places listings in Hot Springs County, Wyoming and List of National Historic Landmarks in Wyoming

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• Buildings and structures in Hot Springs County, Wyoming
• Road bridges on the National Register of Historic Places in Wyoming
• Transportation in Hot Springs County, Wyoming
• Historic American Engineering Record in Wyoming
• National Register of Historic Places in Hot Springs County, Wyoming
• Steel bridges in the United States
• Pennsylvania truss bridges in the United States
• Wyoming Registered Historic Place stubs
• Western United States bridge (structure) stubs
• Wyoming building and structure stubs