India’s Largest Tunnel Boring Machine Lowered For 11.8 km Thane–Borivali Twin Tunnel
December 1, 2025: In a major boost to Mumbai’s most ambitious underground mobility initiative, the Mumbai Metropolitan Region Development Authority (MMRDA) has successfully lowered India’s largest tunnel boring machine (TBM) for the Thane–Borivali twin tunnel project. The machine, a 13.34-metre single shield TBM—the biggest ever used in the country—was lowered into the Thane launch shaft […]