Truss Bridge

A bridge is a structure built for the purpose of providing passage over the obstacles such as water, valley. There are many different designs that all serve unique purposes. Designs of bridges vary depending on the function of the bridge, the nature of the terrain where the bridge is constructed, the material used to make it, and the funds available to build it[9]

6.2.1.1 Types of bridges

There different types bridge structures they are as follows...

6.2.1.1.1 Truss Bridge

A truss bridge is a bridge whose whole superstructure is composed of a truss. This truss is a structure of connected elements forming triangular units. The connected elements may be stressed from tension, compression, or sometimes both in response to dynamic loads. Truss bridges are one of the oldest types of modern bridges. The general types of truss bridges shown in this

6.2.1.1.2 Arch Bridge

Arch bridges have pier at each end. The weight of the bridge is thrust into the pier at either side. The earliest known arch bridges were built by the Greeks, and include the Arkadiko Bridge. Image 05: Arch bridge[12].

6.2.1.1.3 Suspension Bridge

The Suspension bridges are suspended from cables. The earliest suspension bridges were made of ropes covered with parts of bamboo. In modern bridges, the cables hang from towers that are attached to caissons or cofferdams. The caissons or cofferdams are implanted deep into the floor of a lake or river. Sub-types include the simple suspension bridge, the stressed ribbon bridge, the under spanned suspension bridge, the suspended-deck suspension bridge, and the self-anchored suspension bridge. Image 06: Suspension bridge, Golden Gate bridge, USA[13].

6.2.1.1.4 Cable-stayed bridge

Cable-stayed bridges, like suspension bridges, are held up by cables. However, in a cable-stayed bridge, less cable is required and the towers holding the cables are proportionately higher. Image 07: Sidney Linear Bridge, USA[14].

6.2.1.2 Uses of