Mallaham Bridge, County Route M-6 spanning Riley Creek, Pandora, Putnam County, OH
See 27 maps of this location
Photo Caption Pages
County Route M-6 spanning Riley Creek, Pandora vicinity, OH
Find maps of Pandora, OH
Documentation compiled after 1968.
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.
Morrison, David H.
Columbia Bridge Works
Historic American Engineering Record (Library of Congress)
Back to Pandora vicinity, Ohio