Mumbai-Ahmedabad Bullet Train Project Achieves Third Tunnel Breakthrough In Maharashtra
Mumbai-Ahmedabad Bullet Train Project Achieves Third Tunnel Breakthrough In Maharashtra
The successful completion of the third mountain tunnel in Palghar district marks another major milestone for India’s first high-speed rail corridor, highlighting rapid progress in one of the project’s most challenging sections.
A major engineering milestone has been achieved in the Mumbai-Ahmedabad Bullet Train Project with the successful breakthrough of the third mountain tunnel, MT-07, at Ambesari village in Dahanu taluka of Palghar district, Maharashtra.
The breakthrough marks the third mountain tunnel completed in Maharashtra within the last five months, reflecting the rapid pace of construction on India’s first high-speed rail corridor.
The newly completed MT-07 tunnel is 417 metres long and 14.4 metres wide. It has been designed to accommodate both up and down tracks of the Bullet Train corridor. The tunnel was excavated using a controlled drilling and blasting technique from both ends while maintaining strict engineering and safety standards.
During excavation, advanced monitoring systems and geotechnical instruments were deployed to ensure structural stability and worker safety. Real-time monitoring through surface settlement points, 3D targets, strain gauges and seismographs helped track tunnel behaviour, surrounding structures and vibration levels throughout the construction process.
Mumbai-Amdavad Bullet Train Project achieves another milestone 🇮🇳
— Ashwini Vaishnaw (@AshwiniVaishnaw) June 2, 2026
🛤️ 3rd mountain tunnel breakthrough in Maharashtra within 5 months.
📍Dahanu Taluka, Palghar pic.twitter.com/vhZcU4vgmP
Comprehensive safety measures, including ventilation systems, fire-safety arrangements, controlled access and continuous geotechnical supervision, were maintained during the tunnelling work.
The latest achievement follows two earlier breakthroughs in the Maharashtra section of the project. The first breakthrough, MT-05, a 1.5-km-long mountain tunnel near Saphale in Palghar district, was completed on January 2, 2026. The second breakthrough, MT-06, a 454-metre-long tunnel, was achieved on February 3, 2026.
Among the seven mountain tunnels being constructed in Maharashtra, MT-05, MT-06 and MT-07 have now achieved breakthroughs. Another tunnel, MT-08, had already achieved breakthrough status in October 2023. Meanwhile, excavation work on MT-03 has crossed 80 per cent completion, MT-04 is nearing 60 per cent progress, and work on MT-01 and MT-02 continues steadily.
All three mountain tunnels located between the Vapi and Boisar Bullet Train stations have now been successfully excavated. This stretch passes through a key industrial region connecting Maharashtra and Gujarat and forms an important segment of the high-speed rail corridor.
The Mumbai-Ahmedabad Bullet Train Project continues to showcase the use of advanced tunnelling, monitoring and construction technologies, strengthening India’s expertise in high-speed rail infrastructure and supporting the development of safe, modern and future-ready transportation networks.
