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With the 2011 destruction of the Old Blenheim Bridge, the Bridgeport Covered Bridge is the undisputed longest-span wooden covered bridge still surviving. Historically, the longest single-span covered bridge on record was Pennsylvania's McCall's Ferry Bridge with a claimed clear span of 360 feet (110 m) (built 1814–15, destroyed by ice jam 1817).
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.
Old Blenheim Bridge was a wooden covered bridge that spanned Schoharie Creek in North Blenheim, New York, United States.With an open span of 210 feet (64 m), it had the second longest span of any surviving single-span covered bridge in the world.
There is a covered bridge in Frankenmuth, Michigan. There are at least 7 others throughout the state. U.S. Minnesota: Twenty-three covered bridges including one on the National Register of Historic Places. U.S. Missouri: Four historic covered bridges, all now listed as State Historic Sites. U.S. New Hampshire
The Old Mead Covered Bridge in Pittsford was destroyed by fire on July 22, 1971. The Twigg-Smith Covered Bridge in West Windsor was destroyed by wind in 2002. The Frank Lewis Covered Bridge in Woodstock was destroyed by Hurricane Irene on August 28, 2011. The Cedar Swamp Covered Bridge in Cornwall was destroyed by fire on September 10, 2016.
The World Guide to Covered Bridges is published by the National Society for the Preservation of Covered Bridges (NSPCB). [1] It uses a covered bridge numbering system developed by John Diehl, the chairman of the Ohio Covered Bridge Committee. The committee first used the numbering system in 1953 to publish a list of covered bridges in Ohio. [2]
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.
HABS/HAER photo of the Waterford Covered Bridge in 1936. The first covered bridge in the United States was built in 1805 over the Schuylkill River in Philadelphia, Pennsylvania. [8] By the end of the 19th century, over 1,500 covered bridges were constructed across the state. In 1820, Ithiel Town patented his namesake lattice truss. [9]