Truss Bridge

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truss bridge

[′trəs ‚brij]
(civil engineering)
A fixed bridge consisting of members vertically arranged in a triangular pattern.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Truss Bridge


a fixed bridge whose design is a rigid framework. In truss bridges, the roadway and truss members are rigidly interconnected. The truss members take up the longitudinal compressive forces and bending moments, thereby reducing the forces in the beams and allowing the use of lower verticals. Truss bridges are constructed for the most part of reinforced concrete, either cast in situ or precast, and only rarely of steel. Small truss bridges are commonly used for overbridges, where, in many cases, the truss members are arranged diagonally. This design ensures good visibility for the drivers and the safe passage of automobile traffic beneath the overbridge. Truss bridges with long spans are generally erected in the form of T-shaped frames. The cross section of the roadway on small bridges may be ribbed, boxlike, or solid (in the form of a slab). On large bridges, the beams used generally have a boxlike cross section.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
* A truss bridge uses triangle supports that make it very strong, so it needs less piers.
While most truss bridges incorporate stress relief joints, the Cooper River Bridge deck is fully continuous for a length of 1,600 ft.
Moreover, many of the steel deck truss bridges are "fracture critical" - engineering jargon for spans that lack redundancy or secondary support.
Triangles are a very rigid geometric shape which adds to the strength of a truss bridge. Many of these crisscross truss designs are named after the engineers who first patented them.
WARREN - In less than four hours late yesterday morning, a reassembled lenticular truss bridge was hoisted by crane and, in two moves, put in place spanning the Quaboag River.
27: Deck truss bridges, like the Minnesota bridge, on Oregon state and Interstate highways
WARREN - The Gilbert Road truss bridge, removed in 2004 for repair, was gone so long some local residents had doubts the historic bridge across the Quaboag River in West Warren would ever be reopened.
It is one of eight remaining lenticular pony truss bridges, among those built in Massachusetts during the late 19th century.
Mass Highway Department officials said recent inspections of steel truss bridges after the collapse of a steel truss bridge over the Mississippi River in Minnesota this summer, has found all similar bridges in the state to be safe, although some are in need of costly repair.