Keigley Branch Bridge

Keigley Branch Bridge
U.S. National Register of Historic Places
42°08′12.8″N 93°36′03.6″W / 42.136889°N 93.601000°W / 42.136889; -93.601000
Built	1913
Built by	Koss Construction Company
Architect	Iowa State Highway Commission
Architectural style	Spandrel arch
MPS	Highway Bridges of Iowa MPS
NRHP reference No.	98000483[1]
Added to NRHP	May 15, 1998

Keigley Branch Bridge is a historic structure located northeast of Gilbert, Iowa, United States. It spans the Keigley Branch for 47 feet (14 m).^[2] The Iowa State Highway Commission was re-formed in 1913 and they developed standard designs for smaller bridges. One of their designs was an alternative to the Luten arch. They were built throughout the state in the 1910s and 1920s. This is the oldest remaining arch bridge from that era.^[2] The Koss Construction Company of Des Moines completed it in 1913 for $3,384.85. The bridge features a medium-span arch with concrete-filled spandrels, paneled guardrails, a corbeled arch ring, and two-tone concrete detailing. The Keigley Branch Bridge was listed on the National Register of Historic Places in 1998.^[1]

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• Historic American Engineering Record (HAER) No. IA-74, "Keigley Branch Bridge, Spanning Keigley Branch, Gilbert, Story County, IA", 5 photos, 14 data pages, 1 photo caption page

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