Construction of the existing Howrah Bridge was started on 1937. The Cantilever Era was prevailing at that time, and engineers felts that cantilever bridges were more rigid than suspension bridges. This bridge is one of the finest cantilever bridges in the world - left to India by the British engineers. The bridge is 705 meters long and 97 feet (30m) wide. More than 26,500 MT of high-tensile steel went into the unique bridge supported by two piers, each nearly 90 meters above the road. An engineering marvel, it expands as much as a meter during a summer day. Technical Specifications : Builders- Rendel Palmer & Tritton, Cleveland Bridge & Engineering Co. Ltd. Material- Steel. Tower height- 82m. Number of Spans- 3. Length of spans- 99.125m, 457.50m, 99.125m. Length of drop-in span 172.08m. Official website of the Howrah Bridge
http://www.howrahbridgekolkata.nic.in
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