Metro Builds Thick Sturdier Tunnels under Cooum

When Chennai’s largest underground station at Central gets operational, trains will plunge into the dark depths of the city and dart under the historic Cooum river at a depth of nearly 30metre through long, thick and sturdy tunnels that that prevent water seepage.

Chennai Metro Rail Limited (CMRL) through its contractor Afcons Infrastructure has taken additional measures to build the tunnels to withstand the pressure of the soil and the river running above. In times of emergency, commuters can also walk from one tunnel to the other under the river hrough a cross passage.

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