Remarkable Ohio

Serpent Mound Marker
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1-68 Marker Side B

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Front Text: This covered bridge in the oldest still (1962) standing in the state and the last of the "double-barreled" spans in Ohio. It was built across Seven Mile Creek on the Old Camden Road in 1829-30 by Orlistus Roberts and J.L. Campbell. Its three burr-arch trusses built of native oak and poplar with a clear span of 73 feet, support the double roadway. This plaque has been erected to give due honor to the early timber covered bridge builders of Ohio and the important spans they constructed. [This side also contains a bridge illustration in the upper left corner] Back Text: Timber Covered Bridges were vital links in the early road, railroad and canal systems of Ohio and contributed greatly to the growth and development of the state. They were covered with roof and siding to protect the heavy timber trusses from the weather. Many of them have carried their loads and served their communities for well over a century. Fine craftsmen, using broadax, adz, pitsaw, and froe, were able to construct by hand, these sturdy bridges.