In Kolkata East West Metro corridor project, a twin tunnel is being constructed below river Hooghly, between Howrah and Mahakaran stations.
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.
Line 2, also known as the East-West Corridor of the Kolkata Metro is a rapid transit system under construction which will connect Salt Lake in Kolkata with Howrah by going underneath the Hooghly River/Ganga in the Indian state of West Bengal.
