Bandra Worli Sea Link Mumbai
The bridge is a part of the Western Freeway, which connects the Western Suburbs to the business district, Nariman Point. The total cost of construction of the bridge, built by the Hindustan Construction Company, was around Rs 1600 crore (US$ 240 million). There are four lanes in the Bandra Worli Sea Link and four of them were opened to the public in the month of June in 2009 and all the lanes were started working in 2010. The main intention behind the construction of Bandra Worli Sea Link was to reduce the 60–90 minutes time taken to travel from Bandra to Worli into 20–30 minutes. Around 37,500 vehicles uses the Bandra–Worli Sea Link every day according to the records in 2009.
History of Bandra–Worli Sea LinkBefore the Bandra–Worli Sea Link was opened, the Mahim Causeway was the one and only access to the Nariman point from the western suburbs of Mumbai. As Nariman point is the business district of Mumbai, the traffic to the location through the Mahim Causeway was very congested at peak hours. To reduce this traffic congestion The West Island Freeway project was commissioned by the Maharashtra State Road Development Corporation Limited (MSRDC).
As the first step of this project the The Bandra–Worli Sea-Link, was constructed over the Mahim Bay. In the year of 1999 the foundation stone of the project was laid by Bal Thackeray. The total cost estimated for the construction was around 6.6 billion INR. But a total of 16 billion INR was spent for the completion of the construction. The bridge was named as the Rajiv Gandhi Sea Link to commemorate the late prime minister of India, Mr. Rajiv Gandhi.
Design of the Bandra Worli Sea LinkThe Bandra–Worli Sea Link is the primary cable-stayed bridge constructed in open sea in India. The pylons of the bridge are having a complex geometry and the main span over the Bandra channel is made as the longest span to suit the design with the underlying geology of the sea.
Managing these complexities along with ensuring an aesthetic design for the bridge was one of the major challenges faced in completion of the project. The heaviest precast segment ever built in India has been the superstructure of the viaducts of the Bandra–Worli Sea Link.
A span-by-span method was used for the construction of these superstructure viaducts. Only very minute tolerance was imparted in the plan and designs to successfully complete the construction of 20,000 tone Bandra- end span of the bridge deck. The first infrastructure project with seismic arresters, in Mumbai was the Bandra–Worli Sea Link. Earthquakes measuring up to 8.0 on the Richter scale can be endured by the sea link as an advantage of the Seismic arresters.