Truss bridge
Bridge whose load-bearing superstructure is composed of a truss / From Wikipedia, the free encyclopedia
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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. The basic types of truss bridges shown in this article have simple designs which could be easily analyzed by 19th and early 20th-century engineers. A truss bridge is economical to construct because it uses materials efficiently.
Bridge whose load-bearing superstructure is composed of a truss
 Truss bridge of the Southern Pacific Railroad in California for a single track railway, converted to pedestrian use and pipeline support. | |
| Ancestor | Beam bridge[citation needed] |
|---|---|
| Related | None |
| Descendant | Cantilever bridge, truss arch bridge, transporter bridge, lattice bridge[citation needed] |
| Carries | Pedestrians, pipelines, automobiles, trucks, light rail, heavy rail |
| Span range | Short to medium – not very long unless it is continuous |
| Material | Timber, iron, steel, reinforced concrete, prestressed concrete |
| Movable | May be movable – see movable bridge |
| Design effort | Medium |
| Falsework required | Depends upon length, materials, and degree of prefabrication |