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The Bollman design, a through truss bridge, was the first successful all-metal bridge design to be adopted and consistently used on a railroad. [ 1 ] [ 2 ] The type was named for its inventor, Wendel Bollman , a self-educated Baltimore civil engineer . [ 2 ]
A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements, usually forming triangular units.The connected elements, typically straight, may be stressed from tension, compression, or sometimes both in response to dynamic loads.
Wendel Bollman. Wendel Bollman (January 21, 1814 – 1884) was an American self-taught civil engineer, best known for his iron railway bridges.Only one of his patented "Bollman truss" bridges survives, the Bollman Truss Railroad Bridge in Savage, Maryland.
A steel Pratt truss and plate girder bridge was built in 1894 to carry the B&O Valley Line (now the CSX Shenandoah Subdivision) toward Winchester, Virginia, along the Shenandoah River. This was complemented in 1930–1931 with a deck plate girder bridge that carried the B&O Main Line (now the CSX Cumberland Subdivision ) to Martinsburg, West ...
It is a Pegram truss through truss railroad bridge designed by George H. Pegram. [2] It brought the West Belt Branch of the former Oregon Short Line (later Union Pacific) railroad across Henry's Fork of the Snake River. It has two identical Pegram truss through spans, each 135 feet (41 m) long and 16 feet (4.9 m) wide. The total length of the ...
Pegram through truss: Conant Creek Pegram Truss Railroad Bridge: 1894, 1911, 1916 1997-07-25 Grainville: Fremont: Pegram through truss: Gimlet Pegram Truss Railroad Bridge: 1894, 1914 1997-07-25 Ketchum
The Waddell "A" Truss Bridge is standardized truss bridge design that was first patented in 1893 by prolific civil engineer John Alexander Low Waddell. The design provided a simple low-cost, high-strength solution for use by railroads across the United States and Empire of Japan for short spans of around 100 ft (30.5 m).
The Braga Bridge is a continuous truss bridge. It was the fourth longest span of this type when it was completed in 1966. This list of continuous bridge spans ranks the world's continuous truss bridges in two listings: The first is ranked by the length of main span (the longest length of unsupported roadway) and the second by the total length of continuous truss spans.