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The design principle behind the Burr arch truss is that the arch should be capable of bearing the entire load on the bridge while the truss keeps the bridge rigid. Even though the kingpost truss alone is capable of bearing a load, this was done because it is impossible to evenly balance a dynamic load crossing the bridge between the two parts. [5]
The bridge design used his Burr arch truss. "This ultimate achievement of Burr's on the Susquehanna, having in all eighteen 200-foot trussed arch wooden spans, eight between the west shore and a first island, two between that and a second island, and eight more between that and the east shore, and a total length of 4,170 feet, was to be ...
Theodore Burr (August 16, 1771 – November 22, 1822) was an inventor from Torrington, Connecticut, who was credited with the Burr Arch Truss bridge design. He designed and built one of the first bridges across the Hudson River and several bridges that crossed the Susquehanna River .
West Union Bridge: Bypassed Burr truss: 1876 2002 CR 525 W (Tow Path Road) (former) Sugar Creek: Reserve Township: Parke: IN-106: Forsythe Bridge: Extant Burr truss: 1888 2002 CR 650 S Big Flat Rock River: Orange Township: Rush
Landis Mill Covered Bridge was built in 1873 by Elias McMellen at a cost of $969. McMellen, who built many of Lancaster's covered bridges using the Burr arch truss, chose to build this short bridge using a simpler design with multiple kingpost trusses and, instead of Burr arches, pyramidal-shaped trusses to add additional support. [3]
The Leatherwood Station Covered Bridge is a single span double Burr Arch Truss covered bridge structure that was built by Joseph A. Britton & Son in 1899. Originally it had sandstone abutments but when it was moved to Billie Creek Village they were replaced with concrete abutments with sandstone showing.
The Bowsher Ford Covered Bridge is a single span Burr Arch truss covered bridge structure that was built by J.A. Britton's son, Eugene Britton, in 1915. [ 1 ] [ 3 ] [ 4 ] History
Bogert's Bridge is a Burr Truss, named after a design created by Theodore Burr of Connecticut in the early 19th century. Its most distinctive feature is two long arch trusses resting on abutments at either end. It was built by local men. John Waltman of Allentown worked on the bridge as a carpenter's apprentice at the age of 16.