The high-speed rail link between Mumbai and Ahmedabad, India’s first bullet train project, is moving forward quickly in Maharashtra. The National High-Speed Rail Corporation Limited (NHSRCL) provided an update on the progress made in key areas such as station construction, tunnel work, and bridge development.
Station Construction and Viaduct Work Underway
Construction of the elevated stations at Thane, Virar, and Boisar is moving at a steady pace. Concrete base slabs have already been installed at Virar and Boisar. Along the train route, foundation and pier work continues, with around 44 kilometers of piers completed so far.
In Palghar district, viaduct building has begun using full-span box girders. This work is being carried out near Dahanu, signaling a major step in the corridor’s development.
Tunnel Work Across Mountains and Rivers
Seven tunnels are being excavated in the hilly areas of Palghar, showing the scale and technical challenges of the project. In addition, work has begun on bridges over three major rivers in the state—Vaitarna, Ulhas, and Jagani.
A major highlight of the project is the 21-kilometer tunnel connecting Bandra-Kurla Complex (BKC) to Shilphata. Out of this, 7 kilometers will pass beneath Thane Creek. This tunnel will be a major milestone in India’s tunneling efforts.
Advancement in Underground Work
Of the 21-kilometer tunnel, 16 kilometers are being built using Tunnel Boring Machines (TBMs), while the remaining 5 kilometers are being dug using the New Austrian Tunnelling Method (NATM). Currently, 4.1 kilometers of tunnel heading have been completed using NATM near Shilphata. Vertical construction is also on track, with base slabs completed at the Vikhroli and Sawli shafts—56 and 39 meters deep respectively. Sludge treatment systems are being installed at tunnel sites.
Excavation at the BKC bullet train station is nearly finished, with 80% of the digging done. Base slab casting has begun at both ends of the station, located about 100 feet below ground level.
