A view of the Layton Bridge from above.
Photo by: Kordite/Flickr | CC BY-NC 2.0
The Layton Bridge, constructed from 1893 to 1899 by Pencoyd Iron Works for the Washington Run Railroad, is an unusual Pratt pin-connected truss design. Usually the deck of Pratt trusses (atop which the train tracks or road lays) goes at the bottom of the truss, but on the Layton Bridge the deck goes right through the middle of it. Biking the Great Allegheny Passage (gaptrail.org), you’ll spot this unusual design as you approach and pass under the bridge.
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The Great American Rail-Trail promises an all-new American experience. Through 12 states and the District of Columbia, the trail will directly serve nearly 50 million people within 50 miles of the route. Across the nation—and the world—only the limits of imagination will limit its use.
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