India’s Deepest Railway Station Under Construction in Mumbai: Will Be Deep Enough to Fit a 10-Storey Building
India’s Deepest Railway Station Under Construction in Mumbai: Will Be Deep Enough to Fit a 10-Storey Building
Mumbai: Deep below the busy streets of Mumbai’s Bandra-Kurla Complex (BKC), India’s deepest railway station is rapidly taking shape—set to be built around 100 feet underground. As part of the ambitious Mumbai-Ahmedabad High-Speed Rail Project, this will be the country’s only underground stop on the 508-km bullet train corridor.
This engineering marvel is designed across three spacious levels: a platform level, a concourse level, and a service floor—so deep that a 10-storey building could easily fit inside. When complete, it will redefine urban transport infrastructure in India.
Fast Progress Below Ground
Nearly 80% of excavation work has already been completed, and 69 massive base slabs are being laid about 32 meters underground to support the structure and rail operations. Six platforms, each around 415 meters long, will handle 16-coach Shinkansen E5 bullet trains from Japan.
The entire high-speed rail corridor itself is equally ambitious, featuring 24 major bridges, seven mountain tunnels, and even a 7-km-long undersea tunnel under Thane Creek. Advanced tunnel boring machines (TBMs) and the New Austrian Tunneling Method (NATM) are being used to carve out a 21-km-long tunnel section starting from Mumbai.
Blending Indian Scale with Global Tech
The project, costing around ₹1.08 lakh crore, is being developed with Japanese assistance—both in funding and Shinkansen technology. When operational, the bullet train will cut travel time between Mumbai and Ahmedabad from 8 hours to just 3 hours, running at speeds up to 320 km/h.
Inside, passengers can choose from three travel classes: First Class with 15 luxury seats, Business Class with 55 seats, and Standard Class offering 620 seats—altogether accommodating 690 passengers per train.
Looking Ahead
Originally aimed for completion in 2026, the underground station and full corridor are now expected to be ready by 2028. To ensure safety and structural stability, over 3,300 secant pile walls have been built. Meanwhile, work continues at other shafts in Vikhroli (56 meters deep) and Sawli (39 meters deep).
Supported by the Mumbai Metropolitan Region Development Authority (MMRDA), the underground station will also connect directly to Mumbai Metro lines 2B and 3 through pedestrian corridors and foot overbridges, creating a seamless travel experience.
What’s happening beneath Mumbai is more than just engineering—it’s a bold step toward transforming how India travels, powered by global collaboration, cutting-edge design, and a vision for the future of high-speed rail.
