Twenty Mile Road Bridge, Spanning St. Joseph River on Twenty Mile Road, Tekonsha, Calhoun County, MI
Photo Caption Pages
Spanning St. Joseph River on Twenty Mile Road, Tekonsha vicinity, MI
Find maps of Tekonsha, MI
Documentation compiled after 1968.
Survey number HAER MI-106
Significance: The 20 Mile Road Bridge is a large and early example of a riveted pony truss structure with no pinned connections. It is all the more unusual for its Pratt rather than Warren truss design because Pratt truss designs are typically pin-connected. It has been considered eligible for the National Register of Historic Places since 1992.
Steel Truss Bridges
Pony Truss Bridges
Historic American Engineering Record (Library of Congress)
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