The undersea twin tunnels in South Mumbai, which are part of the Rs 12,721-crore Mumbai Coastal Road Project, are nearing completion and are set to open by November 2023, marking India's first undersea tunnel.
The construction of the 2.07-kilometer tunnels near Girgaon, proceeding north under the Arabian Sea, Girgaon Chowpatty, and Malabar Hill, and concluding at Breach Candy's Priyadarshini Park.
The tunnels, which have a diameter of 12.19 meters and stretch 17-20 meters below sea level, will feature six crosswalks, four for pedestrians and two for motorists, and each tunnel will have three 3.2-meter-wide channels.
The tunnels reached their deepest point at 72 metres near Malabar Hill.
The high-speed coastal route aims to reduce the 45-minute peak-time trip from Girgaon to Worli to only 10 minutes.
Construction of tunnels is a part of the Mumbai Coastal Road Project (MCRP) being built by the Brihanmumbai Municipal Corporation (BMC).
