Third Mountain Tunnel Breakthrough Achieved for Mumbai–Ahmedabad Bullet Train Project
The 417-metre-long and 14.4-metre-wide tunnel has been designed to accommodate both up and down tracks of the high-speed rail corridor. Excavation was carried out using a controlled drilling-and-blasting method from both ends, supported by advanced monitoring and safety systems.
The breakthrough marks the third mountain tunnel completed in Maharashtra within the last five months, highlighting rapid progress in one of the most technically challenging sections of India’s first high-speed rail project.
The project team deployed sophisticated geotechnical monitoring systems, including surface settlement points, 3D targets, strain gauges and seismographs, to ensure structural stability, precision execution and worker safety throughout the tunnelling process.
Earlier, the project achieved breakthroughs in the 1.5-km-long MT-05 tunnel near Saphale in January 2026 and the 454-metre MT-06 tunnel in February 2026. Among the seven mountain tunnels under construction in Maharashtra, MT-05, MT-06 and MT-07 have now been completed, while MT-03 has crossed 80% excavation progress and MT-04 is nearing 60% completion.
The Mumbai–Ahmedabad Bullet Train corridor includes eight mountain tunnels in total, seven in Maharashtra’s Palghar district and one in Gujarat’s Valsad district, where tunnelling has already been completed.
The project continues to advance the adoption of modern tunnelling and construction technologies, strengthening India’s capabilities in high-speed rail infrastructure development.
Published on:
03 June 2026
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