Dunlap's Creek Iron Bridge
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Sepia-toned photograph of Dunlap Creek Iron Bridge taken from the ground a distance away. Several men are standing on the bridge and a few buildings are apparent on the left side.

Credit: From The Old Pike published 1894; Courtesy Pennsylvania Historical and Museum Commission

Designed and built by Captain Richard Delafield of the U.S. Army Corps of Engineers, the Dunlap Creek bridge was the first cast iron bridge built in the United States. Completed in 1839, it wasn't long before the federal government turned control of the National Road over to the states. The 80-foot bridge is still in use today with no weight restrictions.

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