It is considered to be an engineering marvel, which took six years to construct in the 1940s.  Over 2,590 metric tonnes of high tensile steel make up this unique cantilever bridge that joins the main Railway Station (for Calcutta) and the industrial city of Howrah with the city of Calcutta. Supported by two piers, each nearly 90 meters in height above the road level, the bridge has a span of almost 500 meters (no pillars in the middle). It was opened in 1943 and today it is one of the busiest bridges in the world. It is the third largest bridge in the world, has around 2 million people crossing over it daily. Visible from many places in Calcutta, the bridge is called 'Rabindra Setu'.