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. There are several types of truss bridges, including some with simple designs that were among the first bridges designed in the 19th and early 20th centuries. A truss bridge is economical to construct primarily because it uses materials efficiently.
The Coraopolis Bridge[1] is a girder bridge over the back channel of the Ohio River connecting Grand Avenue on Neville Island to Ferree Street in Coraopolis, Pennsylvania. It opened in 1995 to replace a structure of historic significance. The original Pratt/Bowstring/Pennsylvania[2] through truss spans, designed by Theodore Cooper, were formerly the (third) Sixth Street Bridge, spanning the Allegheny River, in downtown Pittsburgh, and were built in 1892 by the Union Bridge Company. They were floated downstream by the Foundation Company in 1927 rather than being demolished when the bridge was removed to enable construction of the present (fourth) Three Sisters (Pittsburgh) Sixth Street Self-anchored suspension bridge. However, by the late 1980s, the old bridge could no longer support traffic volumes and was replaced by a newer structure.
Blackfriars Bridge in London, Ontario, Canada is a wrought iron bowstring arch through truss bridge, crossing the North Thames River. The bridge was constructed in 1875 and carries single-lane vehicles, bicycles and pedestrians from Blackfriars Street to Ridout Street North.
The Atherton Bridge is a historic iron truss bridge in Lancaster, Massachusetts, spanning the South Branch of the Nashua River. It is a rare example of a hybrid pony truss that is similar to the 19th century truss design of Simeon S. Post. It was built by J. H. Cofrode & Co. of Philadelphia in 1870. It was the first iron bridge to be constructed in the town. The bridge was added to the National Register of Historic Places in 1979.
The Hadley Parabolic Bridge, often referred to locally as the Hadley Bow Bridge, carries Corinth Road across the Sacandaga River in Hadley, New York, United States. It is an iron bridge dating from the late 19th century.
The Glen Falls Bridge is a historic bridge that formerly carried Brunswick Avenue over the Moosup River in Plainfield, Connecticut. Built in 1886 by the Berlin Iron Bridge Company, it is one of a shrinking number of surviving 19th-century lenticular truss bridges in the state. The bridge was listed on the National Register of Historic Places in 1999. It has been closed to all traffic for many years.
The Dodd Ford Bridge is a bridge spanning the Blue Earth River about 1 mile (2 km) southwest of Amboy, Minnesota, in Blue Earth County, Minnesota.
The Clinton Falls Bridge, also known as the Old Mill Bridge and formally as Bridge L-5573, is a historic steel Pratt through truss bridge that spans the Straight River in Clinton Falls Township, Minnesota. It was listed on the National Register of Historic Places in 1997 as Bridge No. L-5573 for having local significance in the theme of engineering. It was nominated for being an example of early steel truss bridge design in Minnesota.
The EDZ Irigary Bridge is a historic Pennsylvania truss bridge in southeastern Johnson County, Wyoming. The bridge was built in 1913 at Sussex, Wyoming, and moved in 1963 to Irigary Road. The bridge was listed on the National Register of Historic Places in 1985 as part of a Multiple Property Submission devoted to historic bridges in Wyoming.
The Indian Creek Bridge is a wrought iron bridge, built about 1880 to the east of Cedar Rapids, Iowa. The bridge crosses the Indian Creek, a tributary of the Cedar River, in Linn County. It was designed and built by the Wrought Iron Bridge Company (WIBCO) of Canton, Ohio as an eight-panel pin-connected through truss in an unusual double-intersection Pratt design.
The Bell Road Bridge is a Pratt through truss bridge in Dexter Township, Washtenaw County, Michigan. Built in 1891, the bridge carried Bell Road over the Huron River. From 1997 to 2018, the bridge sat on the riverbank, overgrown with brush. The bridge is a Michigan State Historic Site and is listed on the National Register of Historic Places.
The Delhi Bridge, also known as the East Delhi Bridge, is a one-lane, wrought iron Pratt through truss bridge that carries East Delhi Road over the Huron River in Scio Township, Michigan. The bridge was completed on October 12, 1883 to replace a wooden span built in 1851. In 1917, the bridge was severely damaged by a tornado but was rebuilt. After it was closed to traffic in 2005 for being unsafe, the bridge was renovated and reopened in 2009. The bridge is listed on the National Register of Historic Places.
The Pier Bridge is a historic covered bridge in Newport, New Hampshire. Originally built in 1907 to carry the Boston and Maine Railroad across the Sugar River, it now carries the multi-use Sugar River Trail, which was built on the abandoned right-of-way. It is one of a modest number of historic covered bridges in New Hampshire, and is named for the fact that it has a central pier. The bridge was listed on the National Register of Historic Places in 1975.
Starke County Bridge No. 39 is a single span Warren Pony Truss structure. The bridge is located on the northern outskirts of the small town of Knox, Indiana, where Main and Water Streets terminate at the former Penn Central Railroad cut. The bridge spans the rail cut in a northwest–southeast direction, allowing access to Wythougan Park.
Pugh Ford Bridge, also known as Bartholomew County Bridge No. 73, is a historic Pratt through truss bridge spanning the Flatrock River at Flat Rock Township and German Township, Bartholomew County, Indiana. It was built by the Elkhart Bridge and Iron Co. and built in 1911. It consists of two spans, with each measuring 128 feet long. It rests on concrete abutments and a concrete pier.
Aqueduct Bridge, also known as the Coffey Bridge and Clay County Bridge #182, is a historic Pratt through truss and Pratt pony truss bridge located in Perry Township and Sugar Ridge Township, Clay County, Indiana. The original span was built by the Cleveland Bridge and Iron Company in 1880 and the second section by the Vincennes Bridge Company in 1920. It carries Towpath Road over Birch Creek. The original span measures 60 feet (18 m) and the second span 102 feet (31 m) long. They rest on concrete abutments and a central pier.
Ohio Street Bridge, also known as the Joan Marchand Overlook, is a historic Pratt through Truss bridge located at Evansville, Indiana. It was built in 1891 by the Pittsburgh Bridge Company and the sandstone abutments constructed by Eigenmann & Hoolerbach. It is a single span steel truss bridge and measures 198 feet long and 24 feet wide. It is closed to vehicular traffic but is used by pedestrian traffic.
The Martin Covered Bridge is a wooden covered bridge spanning the Winooski River off United States Route 2 in southern Marshfield, Vermont. Built about 1890, it is the only surviving historic covered bridge in the town. It was listed on the National Register of Historic Places in 1974.
The Straight Street Bridge is a vehicular bridge over the Passaic River in Paterson, New Jersey, that is listed on the National Register of Historic Places.
The Morley Bridge, also known as the Romley Bridge, located near Romlee in Chaffee County, Colorado, is a wrought-iron pin-connected Pratt truss bridge that was built in 1881. It was listed on the National Register of Historic Places in 2003.
