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The truss configuration is the design patented by Bollman as the "Bollman suspension truss" in 1852. Each span is 79.5 feet (24.2 m) long, 25.5 feet (7.8 m) wide and about 21 feet (6.4 m) tall. The Bollman truss suspends the deck from a network of tension members, while the top chord resists compressive forces.
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.
In 1835 the Washington branch of the B&O Railroad was completed, and Savage Station was established on the line about a mile southeast of the present mill. A spur of the B&O was laid to the Savage factory in 1887, and it was at this time that the famous Bollman Truss Railroad Bridge was moved to its present site from another location ...
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 ...
This bridge was built in 1869 and is the only remaining Bollman truss bridge of its design in the country. It is now preserved as a National Historic Landmark. During the American Civil War, Savage Mill served an important role for the Union Army beginning in 1861. Despite a limited supply of cotton, the mill was used to manufacture canvas for ...
Bollman Suspension and Trussed Bridge: 1869 October 18, 1972: Savage ... Bollman Truss Bullfrog Road Bridge: 1908 ... Burr Arch Through Truss LeGore Bridge: 1898-1900
MD-170: Bollman Truss Bridge: Extant Pratt truss: 2007 Westminster: Carroll: MD-174: Gilpin's Falls Covered Bridge: Extant Burr truss: 1860 2012 MD 272 (North East Road) (former) North East Creek: North East: Cecil
Historic American Engineering Record (HAER) No. md-170, "Bollman Truss Bridge, Union Mills Homestead Park, 3311 Littlestown Pike, Westminster, Carroll County, MD", 1 photo, 1 photo caption page v t