23 Mile Road–Kalamazoo River Bridge
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The 23 Mile Road–Kalamazoo River Bridge is a curved-chord through-girder bridge in
Marengo Township, Michigan Marengo Township is a civil township of Calhoun County in the U.S. state of Michigan. It is part of the Battle Creek, Michigan Metropolitan Statistical Area. As of the 2010 census, the township population was 2,213. Communities *Marengo is an u ...
, United States, that carries 23 Mile Road over the Kalamazoo River. Built in 1922, it is listed on the
National Register of Historic Places The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance or "great artistic v ...
.


History

Prior to construction of the concrete structure, the river was spanned by another bridge at this location, presumably of a steel truss design. The new bridge was planned in January 1922 by the Michigan State Highway Department.
Calhoun County Calhoun County is the name of several counties in the United States of America named after U.S. Vice President John C. Calhoun: * Calhoun County, Alabama * Calhoun County, Arkansas * Calhoun County, Florida * Calhoun County, Georgia * Calhoun Count ...
subsequently built the structure as a State Reward Bridge. Mead Brothers of
Battle Creek Battle Creek is a city in the U.S. state of Michigan, in northwest Calhoun County, at the confluence of the Kalamazoo and Battle Creek rivers. It is the principal city of the Battle Creek, Michigan Metropolitan Statistical Area (MSA), which encom ...
served as contractor in dismantling the previous span and building the new bridge. Construction cost $10,353. The bridge was listed on the National Register of Historic Places on December 22, 1999. It was eligible as one of the oldest examples of its design and for its well-preserved state. The 12 Mile Road–Kalamazoo River Bridge, also in Calhoun County, was added the same day.


Design

The bridge is oriented north–south and located about south of Marengo in a rural area. The bridge has a curved-chord through-girder design, a style developed by the Michigan State Highway Department in the early 1920s. The bridge consists of a single span. The girders, which also serve as railings, have a curved top surface and, along the sides, have elliptical recesses with six smaller recesses within. The corner posts have squared caps and bases to which are attached
Armco AK Steel Holdings Corporation was a steelmaking company headquartered in West Chester Township, Butler County, Ohio. The company, whose name was derived from the initials of Armco, its predecessor company, and Kawasaki Steel Corporation, was a ...
guard rails. The northwest corner post bears a bridge plate.


See also

* List of bridges on the National Register of Historic Places in Michigan * National Register of Historic Places listings in Calhoun County, Michigan


References

{{DEFAULTSORT:23 Mile Road-Kalamazoo River Bridge Road bridges on the National Register of Historic Places in Michigan National Register of Historic Places in Calhoun County, Michigan Bridges completed in 1922 Concrete bridges in the United States Girder bridges in the United States Transportation buildings and structures in Calhoun County, Michigan