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The Hectorville Covered Bridge consists of two Town lattice trusses, 52.5 feet (16.0 m) long, with a structure width of 19.5 feet (5.9 m) and a roadway width of 16 feet (4.9 m) (one lane). The bridge's exterior is clad in vertical board siding, and it is covered by a metal gable roof.
Main Span Length: 75.1 feet (22.9 m) [9] Total Span Length: 330.1 feet (100.6 m) Deck Width: 16.1 feet (4.9 m) Vertical Clearance: 13 feet (4.0 m) Underclearance: 27 feet (8.2 m) Above measurements are approximate and unofficial. Total span length is not always the same as total bridge length. [9]
Between 1969 and 2015, the number of surviving covered bridges in Canada declined from about 400 to under 200. [21] In 1900, Quebec had an estimated 1,000 covered bridges. [22] Relative to the rest of North America, Quebec was late in building covered bridges, with the busiest decade for construction being the 1930s. [23]
A simple lattice truss will transform the applied loads into a thrust, as the bridge will tend to change length under load. This is resisted by pinning the lattice members to the top and bottom chords, which are more substantial than the lattice members, but which may also be fabricated from relatively small elements rather than large beams.
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 ...
The Horton Mill Covered Bridge was listed on the National Register of Historic Places on December 29, 1970, the first covered bridge in the southeastern United States to be added. At 70 feet (21 m), it is the highest covered bridge above any U.S. waterway. It was reopened on March 11, 2013, after being closed in 2007 due to vandalism.
The bridge is a single-span Town lattice truss structure, with a total length of 121 feet (37 m), and a width of 18.5 feet (5.6 m) and a roadway width of 15 feet (4.6 m), sufficient for one modern travel lane.
The bridge spans the Trout River in an east–west orientation. It is of Town lattice truss design, 91 feet (28 m) in length and 19.5 feet (5.9 m) in width, with a roadway width of 16 feet (4.9 m) (one lane). It is covered by a gabled roof, and is sheathed by vertical board siding, which extends a short way inside the portals to shelter the ...