Bridge or Bust

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Recommended: Types of bridges essay

In a new era of technology and engineering the world's longest bridge is more than a hundred miles long! A bridge is a structure built to span physical obstacles such as a body of water, valley, or road. There are many different bridge designs that are created to serve different purposes. Designs of bridges vary depending on the function of the bridge, the terrain where the bridge is constructed and anchored, the money available to build the bridge, and the material used to make it. Based on this criteria an engineer might decide to build either a truss, beam, or arch bridge. When evaluating bridge designs based on their weight bearing capacity truss bridges are the most structurally sustainable, because triangles are the strongest building shape.

The simplest and most common bridge design is beam bridge. Beam bridges are horizontal beams supported at each end by substructural foundations and can be either only be supported when the beams connect across a single span, or continuous when the beams are connected across two or more spans ("Bridge Basics"). When there are multiple sp...

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