Two Types of Tension Bridges

Most bridge builders choose from a short list of structure types, and some even use more than one type in their final design. The arch, span and suspension bridge are the most common. All bridges rely on the physics of tension and compression in varying degrees within their architecture. Suspension bridges and their cousin, the cable-stayed bridge, use large tension cables to support their structures.
  1. Suspension Bridges

    • A famous example of this type of bridge is the Golden Gate Bridge in San Francisco. Tresses that support the deck are suspended from large flexible cables that run over the towers and are attached at either end of the bridge by load-bearing anchorages. These cables and anchorages support the immense tension created by the deck and everything that passes over it.

    Cable-Stayed Bridges

    • Similar to the suspension bridge in that it utilizes cables to support the tension created by the weight of the structure, a cable-stayed bridge supports the bridge in a different way. The cables are attached directly from its towers to the deck below, allowing the tower and cables to directly support the structure. This design gives the bridge better stability against the wind than the suspension bridge.

    Smart Bridges

    • Advances in technology are allowing engineers to implement new safety measures in modern day bridges. Wireless and optical technology are being used to allow engineers to predict and prevent structural and mechanical problems. Overall performance data gathered from this new technology will allow engineers make even better bridges in the future, including suspension and cable-stayed bridges.

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