Work on India’s first underground bullet train station at Mumbai’s Bandra Kurla Complex has reached a significant milestone, with 84 per cent of excavation completed, officials confirmed on Friday.
Engineers are digging to a depth of nearly 32.5 metres, roughly the height of a 10-storey building, to construct the lone underground stop on the ambitious Mumbai-Ahmedabad high-speed rail corridor. The platform will sit at about 26 metres below ground, supported by three levels, concourse, platform, and a dedicated service floor.
Officials said the design provides for six platforms, each about 415 metres long, with direct links to Metro Line 2B and the MTNL building. The station will also feature skylight provisions for natural lighting, wider concourses for passenger movement, and modern amenities at the platform level.
“Approximately 84 per cent excavation work (i.e., 15.7 lakh cubic metres) has been completed. A total of 18.7 lakh cubic metres of earthwork is required at this site,” an official noted.
Also read: Mumbai-Ahmedabad Bullet train soon, travel time 127 mts: Vaishnaw
Casting of the base slab, the deepest level of construction, is under way with M-60 grade temperature-controlled concrete. Officials said that two lakh cubic metres of concrete would be poured solely for the base slab, of which more than 51,000 cubic metres has already been placed. The columns are being cast with higher-grade M-80 temperature-controlled concrete.
Three batching plants, each with a capacity of 120 cubic metres per hour, have been set up at the site. Equipped with ice and chiller plants, they ensure controlled concrete temperatures during the casting process. A modern concrete laboratory at the site carries out tests including Water Permeability and Rapid Chloride Penetration, with intermittent checks sent to reputed external labs.
Structural elements such as secant piling, capping beams and flood walls are already complete. “The pace of development showcases India’s capability to execute world-class infrastructure using cutting-edge global technology, with Japan playing a pivotal role as a trusted partner in this transformative journey,” officials added.
When operational, the Mumbai-Ahmedabad Bullet Train corridor is expected to cut intercity travel times drastically while offering passengers a faster, safer and more reliable alternative to existing transport options.
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