Mumbai-Ahmedabad bullet train project: The is working in full swing for the completion of India’s first . The 508-km-long high speed rail corridor stretches from Mumbai to Ahmedabad. The project is passing through Gujarat, Maharashtra and Union Territory of Dadra & Nagar Haveli.
The – High Speed Rail (MAHSR) corridor includes a 21-km-long tunnel. According to NHSRCL, 5 km of the total 21 km tunnel has been fully excavated, with construction being carried out using the New Austrian Tunneling Method (NATM).
“With excavation complete, work has now advanced to the next stages of tunnel construction,” the NHSRCL said. Inside the tunnel, the drainage system is being constructed using a Drainage Casting Gantry – ensuring that all seepage water is safely collected and chanelled away through a dedicated drainage system for the tunnel.
It added that waterproofing gantries install specialized membranes, creating a protective barrier to seal the tunnel against water ingress. Apart from these, reinforcement bar cages are being prepared and installed along the tunnel profile, forming the steel framework that strengthens the final concrete lining.
“The Lining Gantry follows, casting the final concrete lining that gives the tunnel its permanent structural strength and smooth finish.
Dedicated equipment rooms are also being developed to house the critical systems required for operations and maintenance. With each stage progressing steadily, the underground section of India’s first bullet train Project moves closer to completion,” the NHSRCL said.
As of March 29, 2026, out of the total 508 km Mumbai-Ahmedabad High Speed Rail (MAHSR) corridor, 343 km of viaduct and 434 km of pier work have been completed. Apart from these, 17 river bridges, 5 PSC (pre-stressed concrete) bridges and 13 steel bridges have been constructed. A look at the latest update on Mumbai-Ahmedabad bullet train project:
