All you need to know about India's 1st under-river metro section in Kolkata The Howrah Maidan-Esplanade section passes under the River Hooghly, on the east and west banks of which are situated Kolkata and Howrah City. The 4.8 km stretch between Howrah Maidan and Esplanade is the second section of the East-West Metro corridor between Howrah Maidan and the IT hub Salt Lake Sector V.
The Metro is expected to cover a 520-metre stretch under the river Hooghly in 45 seconds. Out of the total 16.6 km length of the East-West Metro, the underground corridor constitutes 10.8 km between Howrah Maidan and Phoolbagan, with the tunnel under the Hooghly River while the rest of the stretch is an elevated corridor.
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