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West entrance of bridge. Most covered bridges were made of the strongest readily available wood. In the case of the Humpback Covered Bridge, this meant white oak and hickory. The bridge, as it stands today, has most of the original hand-hewn support timbers and decking that was laid down in 1857, however, most of the walls and roofing have been ...
Daniel Good's Fording Covered Bridge (Used to make Willow Hill Covered Bridge in 1962) Miller's Farm Covered Bridge (Used to make Willow Hill Covered Bridge in 1962) Pennsylvania Railroad Bridge ‡ - Created in the 1820s, burnt during the American Civil War in July 1863. It was the longest covered bridge in the world (over a mile and a quarter ...
Covered bridges made with stringers instead of traditional style trusses are considered non-authentic, although in some terms, a stringer construction is also a type of truss. Examples of truss construction on covered bridges include Howe, Town Lattice , Queen-post , King-post , Haupt, Burr , Brown and Pratt.
The longest, historical covered bridges remaining in the United States are the Cornish–Windsor Bridge, spanning the Connecticut River between New Hampshire and Vermont, and Medora Bridge, spanning the East Fork of the White River in Indiana. Both lay some claim to the superlative depending upon how the length is measured.
Media related to Thomas Mill Covered Bridge at Wikimedia Commons; Historic American Buildings Survey (HABS) No. PA-19, "Covered Bridge, Thomas Mill Road (Spanning Wissahickon Creek), Philadelphia, Philadelphia County, PA", 2 photos, 1 color transparency, 2 measured drawings, 2 photo caption pages
While the Old Blenheim Bridge had and Bridgeport Covered Bridge has longer clear spans, and the Smolen–Gulf Bridge is longer overall, with a longest single span of 204 feet (62 m), the Cornish–Windsor Bridge is still the longest wooden covered bridge and has the longest single covered span to carry automobile traffic. (Blenheim was and ...
Below is a list of covered bridges in Iowa. There are nine authentic covered bridges in the U.S. state of Iowa, though two halves of one bridge reside in different locations. [1] Six of them are historic. A covered bridge is considered authentic not due to its age, but by its construction.
Name Image County Location Built Length Crosses Ownership Truss Notes Ashland Covered Bridge [1]: New Castle: Ashland: ca. 1860: 52 feet (16 m) Red Clay Creek