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 ` 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 Press Release is based on the information given by the Minister of State for Railways Shri Rajen Gohain in a written reply to a question in Lok Sabha on 02.08.2017 (Wednesday).