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.
A trestle bridge is a bridge composed of a number of short spans supported by closely spaced frames. A trestle is a rigid frame used as a support, historically a tripod used to support a stool or a pair of isosceles triangles joined at their apices by a plank or beam such as the support structure for a trestle table. Each supporting frame is a bent. A trestle differs from a viaduct in that viaducts have towers that support much longer spans and typically have a higher elevation.
The Tower Bridge is a vertical lift bridge across the Sacramento River, linking West Sacramento in Yolo County to the west, with the capital of California, Sacramento, in Sacramento County to the east. It has also been known as M Street Bridge. It was previously a part of U.S. Route 40 until that highway was truncated to east of Salt Lake City as well as US Route 99W, which served the western portion of the Sacramento Valley from Sacramento to Red Bluff. The bridge is maintained by the California Department of Transportation as part of State Route 275 and connects West Capitol Avenue and Tower Bridge Gateway in West Sacramento with the Capitol Mall in Sacramento.
The Hares Hill Road Bridge is a single-span, wrought iron, bowstring-shaped lattice girder bridge. It was built in 1869 by Moseley Iron Bridge and Roof Company and is the only known surviving example of this kind. The bridge spans French Creek, a Pennsylvania Scenic River.
The Gimlet Bridge is a 217-foot, single span Pegram truss railroad bridge in Blaine County, Idaho. It is 17 feet (5.2 m) and is supported by concrete piers at each end. It provides 21 feet (6.4 m) clearance above a roadbed below.
The Jackson Branch Bridge No. 15, also known as the Tecumseh Railroad Bridge due to its close proximity to the city of Tecumseh, is a historic railway deck truss bridge that spans the River Raisin in rural Raisin Charter Township in Lenawee County, Michigan. The bridge was added to the National Register of Historic Places on December 4, 2001.
The Albion River Bridge is a wooden deck truss bridge crossing the Albion River in Mendocino County, California. It is the only remaining wooden bridge on California State Route 1; dramatic views of the bridge are visible from the nearby town of Albion, California. It was listed on the National Register of Historic Places in July 2017.
George Herndon Pegram (1855–1937), most commonly known as George H. Pegram, was an engineer who patented the Pegram truss.
The Ririe A Pegram Truss Railroad Bridge is a Pegram truss railroad bridge which crosses the Snake River 3 miles (4.8 km) north of Ririe, Idaho. The bridge, which carries a one-track section of the East Belt Branch, consists of two truss spans and is 420 feet (130 m) long by 18 feet (5.5 m) wide. The bridge was originally constructed for a crossing in Nyssa, Oregon in 1894 for the Union Pacific Railroad and was relocated to its current site in 1914, where it carried Oregon Short Line Railroad tracks. The bridge's Pegram truss design was the work of George H. Pegram, the chief engineer for Union Pacific; as Pegram held a patent on the design, all surviving Pegram truss bridges were commissioned during Pegram's tenure with the Union Pacific and Missouri Pacific railroads.
The Ririe B Pegram Truss Railroad Bridge is a Pegram truss railroad bridge which crosses the flood channel of the Snake River north of Ririe, Idaho. The single-span bridge, which carries a single track of the East Belt Branch, is 210 feet (64 m) long and 18 feet (5.5 m) wide. The bridge was originally constructed for a Union Pacific Railroad crossing in Nyssa, Oregon in 1894 and was relocated to its current site in 1914, where it carried Oregon Short Line Railroad tracks. The bridge's Pegram truss design was the work of George H. Pegram, the chief engineer for Union Pacific; as Pegram held a patent on the design, all surviving Pegram truss bridges were commissioned during Pegram's tenure with the Union Pacific and Missouri Pacific railroads.
The Stony Creek Bridge is a bridge located on a private road over Stony Creek in Olive Township, Clinton County, Michigan. It was listed on the National Register of Historic Places in 1999. It is the last example of a queen post truss bridge extant in Michigan.
The Quechee Gorge Bridge is a historic bridge, carrying U.S. Route 4 (US 4) across Quechee Gorge, near the Quechee village of Hartford, Vermont. Built in 1911, it is Vermont's oldest surviving steel arch bridge. It was listed on the National Register of Historic Places in 1990.
The Middlesex–Winooski River Bridge is a steel girder bridge carrying U.S. Route 2 (US 2) across the Winooski River in a rural area on the town line between Moretown and Middlesex, Vermont. The two-span bridge was built in 2010, replacing a 1928 three-span Pratt through truss, which was listed on the National Register of Historic Places in 1991.
The Ponca Creek Bridge, also known as NEHBS No. BD00-224, is a historic Pratt truss bridge spanning Ponca Creek that is listed on the National Register of Historic Places.
Grace Pegram Truss Railroad Bridge is a Pegram through truss bridge over the Bear River near Grace, Idaho. It was originally built in 1894 and was moved to its current location by the Union Pacific in 1913.
South Dakota Department of Transportation Bridge No. 63-210-282 was a historic bridge in rural Turner County, South Dakota, carrying 461st Avenue across the East Fork Vermillion River southwest of Centerville. Built in 1909, it was a well-preserved example of bridges built for the county by the Iowa Bridge Company. It was listed on the National Register of Historic Places in 1999. The bridge's original Pratt through main span was replaced by a steel girder span in 2009–10.
The Ashton to Tetonia Trail is a 29.6-mile (47.6 km) rail-trail conversion built on the former Teton Valley Branch of the Union Pacific Railroad from Ashton to Tetonia, Idaho. The trail is used for hiking, biking, horseback riding, cross-country skiing, snowshoeing, and snowmobiling. Access points are found at Ashton, Marysville, Bitch Creek, Felt, and Tetonia. It is managed through Harriman State Park under administration by the Idaho Department of Parks and Recreation.
The St. Anthony Pegram Truss Railroad Bridge, in Fremont County, Idaho near St. Anthony, Idaho, was built in 1896. It was listed on the National Register of Historic Places in 1997.
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.
The Black River Bridge near Carrizo, Arizona was funded in 1911 and built in 1912. It was listed on the National Register of Historic Places in 1988. It spans the Black River, bringing an army road, now Indian Route 9, over the river from Fort Apache to the railroad at the former town of Rice, Arizona.
