The Bandra-Worli Sea Link (officially known as Rajiv Gandhi Sea Link) is a 5.6 km long, 8-lane wide bridge that links Bandra in the Western Suburbs of Mumbai with Worli in Central Mumbai. It is the longest sea bridge, as well as the 4th longest bridge in India after Bhupen Hazarika Setu, Dibang River Bridge and Mahatma Gandhi Setu. It is a cable-stayed bridge with pre-stressed concrete-steel viaducts on either side. It was planned as a part of the proposed Western Freeway that would link the Western Suburbs to Nariman Point in Mumbai's main business district, but is now planned to become part of the Coastal Road to Kandivali. The 1M bridge was commissioned by the Maharashtra State Road Development Corporation (MSRDC), and built by the Hindustan Construction Company. The first four of the eight lanes of the bridge were opened to the public on 30 June 2009. All eight lanes were opened on 24 March 2010. The sea-link reduces travel time between Bandra and Worli during peak hours from 20 to 30 minutes to 10 minutes. As of October 2009, BWSL had an average daily traffic of around 37,500 vehicles. History Mahim Causeway was the only road connecting the western suburbs to Mumbai's central business district. This north-southwestern corridor became a bottleneck and was highly congested at peak hours. The Western Freeway project was proposed to span the entire western coastline of Mumbai to ease congestion. The Bandra-Worli Sea Link, a bridge over Mahim Bay, was proposed as the first phase of this freeway system, offering an alternative route to the Mahim Causeway. The Mujeeb Acharwala Bridge connects the intersection of the Western Express Highway and Swami Vivekanand Road in Bandra to the Khan Abdul Ghaffar Khan Road in Worli. From Worli Seaface, it connects to Mumbai's arterial Annie Besant Road. The project was commissioned by the Maharashtra State Road Development Corporation Limited (MSRDC). The contract for construction was awarded to the Hindustan Construction Company (HCC), with project management led by the UK offices of Dar Al-Handasah. The foundation stone was laid in 1999 by Bal Thackeray. The original plan estimated the cost at to be completed in five years. But the project was subject to numerous public interest litigations, with the 5-year delay resulting in the cost escalating to , with the additional interest cost alone accounting for . Planning The overall project consisted of five parts, contracted