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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] The purpose of the covering is to protect the wooden structural members from the weather.
A lattice truss bridge is a form of truss bridge that uses many small, closely spaced diagonal elements forming a lattice. The design was patented in 1820 by architect Ithiel Town .
Media related to Green Sergeant's Covered Bridge at Wikimedia Commons; Historic American Buildings Survey (HABS) No. NJ-442, "Covered Bridge, Wickecheoke Creek, Sergeantsville, Hunterdon County, NJ", 2 photos, 6 measured drawings, 3 data pages, supplemental material
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.
Covered bridges are timber-truss bridges with a roof and siding which, in most covered bridges, create an almost complete enclosure. [1]The purpose of the covering is to keep snow from accumulating—winter snow accumulation could easily collapse a bridge, and the steep roof would tend to shed snow to either side.
The Hartland Covered Bridge (French: Pont couvert de Hartland) or Hartland Bridge is the world's longest covered bridge at 1,282 feet (391 m) in length. Located in New Brunswick , Canada , the bridge crosses the Saint John River , joining the Carleton County communities of Hartland and Somerville .
Only bridge in the US using this design [6] Pisgah Community Covered Bridge [1] Randolph: Pisgah: ca. 1910: 51 feet (16 m) Upper branch of the Little River Private: Modified queen: Will Henry Stevens Covered Bridge [7]: 61 Macon: Highlands