Vidyasagar Setu is a toll bridge over the Hooghly River in West Bengal, India, linking the cities of Kolkata (previously known as Calcutta) and Howrah.

Construction began on 3 July 1979, and the bridge was commissioned on 10 October 1992 by the Hooghly River Bridge Commission.The project was a joint effort between the public and private sectors, under the control of the Hooghly River Bridge Commissioners.

The bridge is used by around 30,000 vehicles daily, considerably less than the bridge's capacity of 85,000.

http://en.wikipedia.org/wiki/Vidyasagar_Setu