Klondike Bridge


Klondike Bridge
U.S. National Register of Historic Places
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Location	180th St. over the Big Sioux River
Nearest city	Larchwood, Iowa
Coordinates	43°23′09″N 96°31′18″W / 43.38583°N 96.52167°W / 43.38583; -96.52167Coordinates: 43°23′09″N 96°31′18″W / 43.38583°N 96.52167°W / 43.38583; -96.52167
Area	less than one acre
Built	1914
Built by	Western Bridge and Construction Company
Architect	Iowa State Highway Commission
Architectural style	Pratt through truss Warren pony truss
MPS	Highway Bridges of Iowa MPS
NRHP Reference #	98000510^[1]
Added to NRHP	May 15, 1998

The Klondike Bridge is located southwest of Larchwood, Iowa, United States. The 260-foot (79 m) span carried traffic on 180th Street over the Big Sioux River.^[2] In 1913 the Iowa Legislature passed the Brockway Act that required counties to use Iowa State Highway Commission (ISHC) standards for bridge construction rather than the counties acting on their own. The ISHC spent the next year standardizing plans. It is in this transition period that the Lyon County Board of Supervisors decided to replace an outdated 1901 span at this location. They contracted with the Western Bridge and Construction Company of Omaha, Nebraska to build this bridge. They used a Pratt through truss of their own design for the main span. It was flanked by two Warren pony trusses from the ISHC. The structure was completed in 1914 for $11,586.11. The historical nature of this bridge is derived from its construction in the transition period, and its use of standard and non-standard bridge designs.^[2] It was listed on the National Register of Historic Places in 1998.^[1] The span has subsequently been abandoned.^[3]

References

1 2 National Park Service (2009-03-13). "National Register Information System". National Register of Historic Places. National Park Service.
1 2 Clayton B. Fraser. "Klondike Bridge" (PDF). National Park Service. Retrieved 2016-06-03. with one photo from 1992
↑ "Klondike bridge". Iowa Department of Transportation. Retrieved 2016-06-03.

U.S. National Register of Historic Places

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National Register of Historic Places in Lyon County, Iowa

Doon	Charles B. Reynolds Round Barn

George	Duncan-Duitsman Farm Historic District

Granite	Blood Run Site

Klondike	Big Sioux Prehistoric Prairie Procurement System Archaeological District

Larchwood	Klondike Bridge

Rock Rapids	Burlington, Cedar Rapids, and Northern Railroad-Rock Rapids Station, Railroad Track and Bridge First Methodist Church Lyon County Courthouse Melan Bridge

Sheldon	Broad View Ranch Historic District

See also: National Register of Historic Places listings in Lyon County, Iowa and List of National Historic Landmarks in Iowa

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