The Howrah Bridge on the River Hooghly is without a doubt one of the symbols of Calcutta, as well as being the largest bridge in India and the world's busiest. It is located in the eastern part of the city between the Armenian Ghat and Howrah Railway Station. In the early 1900s the old Pontoon Bridge began to prove inadequate for the increasing traffic of vehicles and people, and it was decided to build a new single-span steel suspended. The construction was delayed, however, before the First World War and then by the bureaucracy and the work did not start until 1935. The bridge was then delivered by the manufacturers in 1943. Cross at rush hour is a unique experience, the traffic of both pedestrians and vehicles, is really impressive (as well as pollution, both air noise).