Sewri-Nhava Sheva transharbour link
| Mumbai Trans Harbour Link | |
|---|---|
 |
|
| Carries | Motor vehicles |
| Crosses | Thane Creek |
| Locale | Mumbai Metropolitan Region, India |
| Other name(s) | Sewri-Nhava Sheva Trans Harbour Link |
| Owner | MMRDA |
| Characteristics | |
| Total length | 21.8 kilometres (13.5 mi) |
| Width | 27 metres (89 ft) |
| Height | 25 metres (82 ft) |
| No. of lanes | 6 |
| Design life | 100+ years |
| History | |
| Construction cost | ₹17,843 crore (US$2.8 billion) |
| Opening | 2021 |
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|
The Mumbai Trans Harbour Link (MTHL), also known as the Sewri-Nhava Sheva Trans Harbour Link, is a proposed 21.8 km, freeway grade road bridge connecting the Indian city of Mumbai with Navi Mumbai, its satellite city. When completed, it would be the longest sea bridge in India. The bridge will begin in Sewri, South Mumbai and cross Thane Creek north of Elephanta Island and will terminate at Chirle village, near Nhava Sheva. The road will be linked to the Mumbai Pune Expressway in the east, and to the proposed Western Freeway in the west. The sea link will contain a 6 lane highway, which will be 27 meters in width, in addition to edge strip and crash barrier.
The project is estimated to cost ₹17,843 crore (US$2.8 billion). The MMRDA plans to award contracts for the project by September 2017, and construction is expected to begin by October 2017.
Transportation and traffic planning for Greater Bombay was commissioned to Wilbur Smith and Associates in mid-1962. The firm's report, based on extensive studies conducted over 18 months, was handed over to the Union Ministry of Transport on 19 December 1963. Among other projects, the report proposed the construction of a sea link, known as the Uran Bridge, to connect Mumbai with the mainland near the town of Uran. However, Smith was unsure of the link's feasibility. Citing poor traffic expectations in Uran even in 1981, his report advised a more detailed study of this connection and recommended waiting until "the Trans-Thana area develops further and more community services are extended to Uran." In 1973, the Vashi Bridge linking Mankhurd in Mumbai with Vashi in Navi Mumbai was opened.
The first concrete attempt to build the sea link was made in 2004, when Infrastructure Leasing & Financial Services (IL&FS) submitted a proposal to implement the project on a build, own, operate and transfer (BOOT) basis. The Maharashtra State Road Development Corporation (MSRDC) also submitted a counter proposal. However, the IL&FS proposal was side-lined by the government, for undisclosed reasons.
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