Mumbai, Maharashtra will start the first undersea tunnel of India in the year 2023 which is being constructed as part of Coastal Road project of Mumbai.

  • The Two tunnels will be built under the Mumbai Coastal Road Project.
  • The undersea tunnel will have the length of 2.07 kilometer out of which 1 km portion will be under the sea.
  • It is the first India’s undersea road tunnel.
  • The tunnel will pass through Arabian Sea near Girgaon Chowpatty.
  • It will start from the Priyadarshani Park and will terminate at the Netaji Subhash Road in Marine Drive.
  • The tunnel will be built at a depth of 20m below the seabed.
  • The total cost of the project is Rupees 2,798.44 crore.
  • Each of the tunnel will be completed in 8 to 9 months.
  • The undersea tunnel is being built by the India’s biggest Tunnel Boring Machine.

About Mumbai Coastal Road Project

  • The Mumbai Coastal Road Project is a 10.58-kilometer long road project that starts from the Marine Drive and terminates at the Worli-end of Bandra-Worli Sea Link.
  • The project comprises of land-filled roads, bridges and tunnels.
  • It was started under the plan of linking South Mumbai with North Mumbai with a toll-free road.
  • The Mumbai Coastal Road Project will also ease the traffic run in the city.

Challenges to construction a tunnel

The construction of the tunnel is challenging because it will be built under sea. The major challenges include:

  1. Flow of sea water into the tunnel.
  2. The Tunnel will exert pressure of the sea so there will be fear of tunnel caving.

However, the tunnel is being constructed near the coast so it has eased the construction process. Further, all the safety measures are being taken to ensure stability of tunnel.

Mumbai Undersea Tunnel