The first concrete foundation slab of the Mumbai underground bullet train station was cast on November 30, 2024 at a depth of about 32 meters from ground level, equivalent to a 10-storey building. The station is going to be built using the bottom-up method, that is, excavation from the ground level and paving work has started from the foundation.
This slab is 3.5 meters deep, measuring about 30 meters in length and 20 meters in width. This is the first of 69 slabs that will be cast for the station which will form the deepest construction level for a bullet train station.
High-grade reinforced steel, 6200 rebar couplers, 2254 cubic meters of M60 grade concrete and 4283 MT (metric ton) of aggregate concrete are being used for slab casting.
The concrete pouring was controlled at temperatures below 25°C, through in-situ ice and chiller plants. Adequate waterproofing measures are ensured before casting the slab.
Mumbai’s bullet train station, located in the Bandra Kurla complex, is the only underground station on the Mumbai-Ahmedabad high-speed rail corridor.
Platform 24 meters from ground level
The platform is planned to be built at a depth of about 24 meters from the ground surface. There will be three floors consisting of platform, concourse and service floor.
Excavation is being done to a depth of 32 meters from the ground. The station will have six platforms and the length of each platform is about 415 meters (enough to accommodate a 16-coach bullet train).
The station will have road and metro connectivity. Two entry/exit points are planned at the station – one to access the nearby metro station and the other towards the MTNL building. The station is planned in such a way as to accommodate passenger movement at concourse and platform level.