Do you know about India's first underwater tunnel?

India's first underwater tunnel is being built from inside the Hooghly river in West Bengal. Let's know about it...

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It is being constructed as part of the East West Metro corridor of Kolkata.

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After the tunnel is built, the metro will cover a distance of 520 meters under water in just 45 seconds.

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Its cost will be around Rs 120 crore. This is India's first underwater tunnel which can be completed by December 2023.

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KMRC General Manager Shailesh Kumar told that Kolkata Metro is going to have the distinction of making the country's first metro rail.

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He also said that the Kolkata Metro is being expanded to cover the entire city and its outskirts as well.

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The underwater metro rail service in the Hooghly river will connect the cities of Kolkata and Howrah.

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This tunnel is being constructed on the lines of the London-Paris corridor in Europe. This tunnel is 13 meters above the river bed and

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33 meters below ground level. This tunnel being built in India will connect the IT hub Sector 5 of Salt Lake with the eastern part of Howrah Maidan.

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The inner diameter of the tunnel will be 5.55 meters and the outer diameter will be 6.1 metres.

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The center to center distance between the top and bottom tunnels will be 16.1 metres. Therefore, this tunnel will start functioning by December 2023.

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