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An arch bridge is a bridge with abutments at each end shaped as a curved arch.Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side, and partially into a vertical load on the arch supports.
The bridge is composed of five sequential wooden arch bridges on four stone piers as well as two wooden piers on the dry riverbed where the bridge begins and ends. Each of the three middle spans is 35.1 meters long, while the two end spans are 34.8 meters, for a total length of about 175 meters with a width of 5 meters. [1]
The first bridge, a wooden trestle, in 1864. The Erie Railroad Company built a wooden trestle bridge over the Genesee River just above the Upper Falls in the mid-1800s. Construction started on July 1, 1851, and the bridge opened on August 14, 1852. [2] At the time, it was the longest and tallest wooden bridge in the world. [3]
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 opened for highway M-26 traffic in 1990, at which point the neighboring Lake Shore Drive Bridge was restricted to pedestrian use. [4] On August 26, 1992, the bridge was entered into the 1992 Timber Bridge Design and Construction Award Competition. [5] It was awarded first place in the "Long Span Vehicular Bridges" category. [6]
The Vebjørn Sand da Vinci Project built a laminated-wood parabolic-arch pedestrian bridge in Norway over European route E18 in Ås, Norway, in 2000.It was a partnership between the Norwegian Public Roads Administration and the Norwegian painter and artist Vebjørn Sand, who headed the project.
Some wooden moon bridges employ a “woven-arch” style: cross beams are threaded between the longitudinal members, developing inherent stiffness and shape. [1] Though rare, this technique is displayed on the 12th century Chinese “Rainbow Bridge”, the 1913 moon bridge in the Japanese garden of the Huntington Library in California.
The Dinkey Creek Bridge, also known as Fresno County Bridge No. 42C-04, [a] is a single-span, timber bowstring arch truss bridge that crosses Dinkey Creek in Fresno County, California, within Sierra National Forest. Built in 1938, it closed to automobile traffic in 1965 and was renovated in 1988 to replace rotting timbers.