MMRDA Achieves First Tunnel Breakthrough for Mumbai Metro Line 7A

The Mumbai Metropolitan Region Development Authority (MMRDA) has achieved a major milestone with the first tunnel breakthrough on Metro Line 7A. Executed using a tunnel boring machine (TBM), the breakthrough covers a 1.6-km stretch connecting to Chhatrapati Shivaji Maharaj International Airport (CSMIA), overcoming significant engineering challenges.
Metro Line 7A is poised to significantly enhance connectivity across the region, linking Colaba in South Mumbai to the northern suburbs of Vasai-Virar via Mira-Bhayander, and integrating with Thane and the upcoming Navi Mumbai International Airport.