Built between 1886 and 1894, the Tower Bridge in London is a suspension bridge over the River Thames. It has acquired the status of a symbol of the city of London just like the Tower of London. It is one of the most spectacular buildings of modern construction in the contemporary world. The origins of the bridge date back to 1876 when eastern London began to get congested and stuffy. Getting across the Thames became an ordeal for the layman in contemporary London because of the huge rush.
The minds of a lot of contemporary architects went into making the bridge. The bridge as we see today over the Thames is the contribution of more than 450 workers who toiled hard to turn the designs of the bridge approved by the engineers and architects into a reality. Their united efforts brought about a transformation and the 11,000 tons of steel were finally turned into a steel bridge vibrant with Victorian Gothic design. The novelty was not readily accepted by the denizens of London, but gradually it came to be one of the most significant landmarks of London.
The bridge had to be designed in such a manner as to allow the passage of traffic through the river Thames. With the harbour being close at hand, it became all the more necessary for a mechanism of a movable bridge to be put into place. The bridge can be opened and closed whenever needed. The entire system is operated by electric power since 1976. An open bridge provides a clearance area of 45 metres.