Kolkata Underwater Metro

India’s first underwater metro in Kolkata, Tunnel illuminated, 45 secs under Hooghly River.

Teeming with every kind of vehicle possible, the bridge has become a dreaded prospect for every Kolkata – Howrah bound traveller. This is where the East – West metro (Line 2) comes in with an alternative which combines an almost dreamlike appeal with uncompromised efficiency – travelling more than a 10 storied building below the water surface for almost ½ kilometer across the Hooghly.

The reinforced concrete segmental tunnel linings have a thickness of more than a quarter of a mater and are caulked with a composite gasket of neoprene and hydrophilic rubber to seal the tunnel from ingress of water. This marvel of modern technology is a resounding first in India as well as a rare venture world wide.

The tunnel is used by East West Metro Line (Green Line) for metro rail service by Kolkata Metro Rail Corporation and it was constructed by Afcons Infrastructure.

Metro Tunnel: