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Pandora vicinity

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Mallaham Bridge, County Route M-6 spanning Riley Creek, Pandora, Putnam County, OH



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Item Title


Location
County Route M-6 spanning Riley Creek, Pandora vicinity, OH

Find maps of Pandora, OH


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER OH-88
Unprocessed field note material exists for this structure (N38).
Building/structure dates: 1876 initial construction
Significance: The bridge is an example of "Morrison's Patent Wrought Iron Arch Truss Bridge," based on a patent granted David H. Morrison in 1867. Unique among bowstring arches, this design used vertically-oriented I-beam flanges to form the bow. Morrison, founder of the Columbia Bridge Works of Dayton, Ohio, was one of the most important bridge engineers and manufacturers in 19th century Ohio.

Subjects
Vehicular Bridges


Related Names
Morrison, David H.
Columbia Bridge Works


Collection
Historic American Engineering Record (Library of Congress)

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