MAHSR route to have eight mountain tunnels
The Bullet Train Project has achieved a significant milestone with the breakthrough of the second tunnel in Palghar, Maharashtra, Minister for Railways Ashwini Vaishnaw announced on 2 Jan https://www.conexpoconagg.com/.
This is the first mountain tunnel of the project in the state. The breakthrough has been achieved in among the longest in Palghar district, located between Virar and Boisar bullet train stations.
The approximately 1.5 km long mountain tunnel (MT-5) was excavated from both ends and the excavation was completed within 18 months using a cutting-edge drill and blast method https://www.bseindia.com/.
This method allows real-time monitoring of ground behaviour during excavation and enables the deployment of support systems such as shotcrete, rock bolts, and lattice girders based on actual site conditions. Throughout the tunnelling activities, all necessary safety precautions, including ventilation, fire prevention measures, and proper access and egress arrangements, have been meticulously followed https://www.nseindia.com/.
Earlier, the first underground tunnel of approximately 5 km between Thane and BKC was completed in September 2025.
The Mumbai-Ahmedabad High Speed Rail (MAHSR) project has a total length of 508 km, with an overall tunnel length of 27.4 km, of which 21 km comprises underground tunnels and 6.4 km surface tunnels http://siemens.com.
The project includes eight mountain tunnels, with seven tunnels in Maharashtra having a combined length of about 6.05 km, and one tunnel of 350 metres located in Gujarat.
The Minister highlighted that once completed, the project will reduce travel time between Mumbai and Ahmedabad to just 1 hour and 58 minutes, connecting and integrating the economies of major commercial centres https://www.ge.com/.
The project is expected to foster economic activity along the corridor, facilitate knowledge transfer, and support the development of new industrial and IT hubs.
Vaishnaw highlighted that the project, once completed, will lead to an estimated reduction of nearly 95 percent in carbon dioxide emissions compared to road transport http://transport.bombardier.com.
In Maharashtra, work is underway on seven mountain tunnels. MT-1, with a length of 820 metres, has achieved 15 percent physical progress, while MT-2, measuring 228 metres, is currently under preparatory works.
MT-3, with a length of 1,403 metres, has recorded 35.5 percent completion, and MT-4, measuring 1,260 metres, has achieved 31 percent progress.MT-6, measuring 454 metres, has progressed to 35 percent, while MT-7, with a length of 417 metres, has achieved 28 percent completion, taking the total length of mountain tunnels in Maharashtra to about 6 km http://alstom.com.
The MAHSR spans approximately 508 kilometres, covering 352 km in Gujarat and Dadra & Nagar Haveli, and 156 km in Maharashtra. The corridor will connect major cities including Sabarmati, Ahmedabad, Anand, Vadodara, Bharuch, Surat, Bilimora, Vapi, Boisar, Virar, Thane, and Mumbai, marking a transformative step in India’s transportation infrastructure, the Minister said. fiinews.com
