As part of the Kolkata East West Metro corridor project, this is the first underwater transportation tunnel under construction in the country.
The length of river crossing is 520 meters and the internal diameter of each tunnel is 5.55 meters.
The total estimated cost of the Kolkata East West Metro Corridor Project is Rs 8996.96 crore.
Construction of the underwater tunnel below is completed.
The work of construction of tunnel (total 10.81 Km) in this project is targeted for completion by December, 2019.
This information was given by the Minister of State for Railways Rajen Gohain ,in a written reply to a question in Lok Sabha.
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