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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 has traditional bridge design, and the elevated portion of the bridge is located above U.S. Route 75. [5] It is the world's only net-tied arch bridge with a doubly-curved deck and skewed supports. [5] The bridge has a structural weight of 800,000 pounds, [5] and can withstand a maximum load of approximately 445,000 pounds. [5]
This enables bridges to be considerably lighter. [citation needed] The Luten Bridge Company was one seller of the designs. The Topeka Bridge & Iron Co. was a western seller of the designs. [1]: 3 According to Luten, by 1919 he had designed more than 17,000 Luten arch bridges, and there were examples in all but three US states. [2]: 142
In the 3rd century, segmental arch bridges, or flat arch bridges, emerged. One of the earliest examples of this type of bridge is the Limyra Bridge, [15] situated near Limyra in present-day Turkey. It is 360 meters in length and comprises 26 segmental arches and two semi-circular arches. [16]
The design is a continuous cantilevered cable-stayed steel through arch, with bedstead endposts. Memphians also call the bridge the "New Bridge", [2] as it is newer than the Memphis & Arkansas Bridge (carrying Interstate 55) downstream, and the "M Bridge", due to its distinctive shape.
It is the tenth-longest spanning-arch bridge in the world and the tallest steel arch bridge, measuring 134 m (440 ft) from top to water level. [6] It was also the world's widest long-span bridge, at 48.8 m (160 ft) wide, until construction of the new Port Mann Bridge in Vancouver was completed in 2012. [7] [8]
The actual resolution of forces will depend upon the bridge' design. [1] If no horizontal thrusting forces are generated, this becomes an arch-shaped truss which is essentially a bent beam – see moon bridge for an example. If horizontal thrust is generated but the apex of the arch is a pin joint, this is termed as a three-hinged arch.
The through arch bridge usually consists of two ribs, [5] although there are examples like the Hulme Arch Bridge of through arches with a single rib. When the two arches are built in parallel planes, the structure is a parallel rib arch bridge. When the two arch ribs lean together and shorten the distance between the arches near the top, the ...