The Mumbai Metropolitan Region Development Authority (MMRDA) had submitted the Detailed Project Report (DPR) for the proposed line to the Cabinet sub-committee for approval. Metropolitan. Maharashtra has cleared a ₹13,856.37-crore infrastructure project that seeks to improve connectivity between Kalyan-Dombivli and Navi Mumbai, with Chief Minister Devendra Fadnavis setting a. The Maharashtra Cabinet Infrastructure Committee has approved the ₹13,856-crore Mumbai Metro Line 12A to enhance connectivity between Kalyan-Dombivli and Navi Mumbai.