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	Disappearing Bridges Photographic catalog by Daniel Alward of historic iron and steel bridges mainly in Pennsylvania and Ohio.
	Genesee River Bridges Timeline with construction notes of historic Rochester bridges. Also includes a selection of old postcard images.
	George Washington Bridge Suspension bridge across the Hudson river. Features a range of current and historic data and photographs.
	Highway Bridges: A Northern California Sampler Article on the history of California bridges by Jill Livingston, published in the Society for Commercial Archeology Journal.
	Historic Bridges in Butte, Nevada and Yuba Counties, California Essays and photographs of truss, suspension, and covered bridges.
	Historic Bridges Photographs and data of historic cast and wrought iron bridges, early steel bridges, and early stone and concrete bridges. Classified by state. From the University of Florida .
	Historic Bridges - Mercer County Pennsylvania Photographs and data of covered, arch, and steel bridges.
	Historic Bridges of California Photographic gallery and basic data. Also includes covered bridges and related links.

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