The Thane Borivali Twin Tunnel, inaugurated on July 13, 2024, is India’s longest and largest urban tunnel, spanning 11.8 km and developed by the Mumbai Metropolitan Region Development Authority (MMRDA), reducing travel time from over an hour to just 12 minutes.
The Rs. 16,600 crore project cuts the travel distance by 12 km and is part of a larger infrastructure initiative aimed at improving connectivity in Mumbai.