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A covered bridge is a timber-truss bridge with a roof, decking, and siding, which in most covered bridges create an almost complete enclosure. [1]
This 86.5-foot-long (26.4 m), 18.66-foot-wide (5.69 m), Howe truss bridge was built in 1855. It was renovated by the Works Progress Administration in 1939, and by the city of Philadelphia in 2000. [2] It is the only remaining covered bridge in Philadelphia and is the only covered bridge in a major US city.
Examples of truss construction on covered bridges include Howe, Town Lattice, Queen-post, King-post, Haupt, Burr, Brown and Pratt. Of the existing historic covered bridges in Alabama, the Gilliland-Reese Covered Bridge and the Old Union Crossing Covered Bridge are classified as non-authentic based on their current construction.
Most visual artists use, to a greater or lesser degree, the sketch as a method of recording or working out ideas. The sketchbooks of some individual artists have become very well known, [4] including those of Leonardo da Vinci and Edgar Degas which have become art objects in their own right, with many pages showing finished studies as well as ...
The bridge structure is built out of a series of panels and other steel elements, joined by rivets, and its deck consists of I-beam stringers covered by a concrete base. [2] The bridge was built in 1911, its trusses built by the American Bridge Company to a design by John W. Storrs, a prolific local bridge engineer. It was originally built as a ...
The bridge housing included flared board-and-batten siding, arched portals, ribbon daylighting and wooden flooring; The bridge has long been closed to vehicular traffic but served pedestrian traffic up until quite recently when the approaches were removed; delisted from the NRHP; by tradition the oldest covered span in Oregon, thought its ...
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
The bridge is the only remaining covered bridge in Ontario and the second oldest surviving bridge in the Region of Waterloo. [ 1 ] [ 2 ] (In 2015, the total number of surviving covered bridges in Canada was below 200.) [ 3 ] John Bear, who had previously built barns, built the bridge in 1880–1881, mostly of oak and white pine.