Updated On: 06 April, 2025 11:16 AM IST | Mumbai | Rajendra B. Aklekar
Four key corridors set to open this year, but delays and cost overruns continue; at least four Metro corridors have been targeted for completion by December 2025

Pic/Satej Shinde
The Mumbai Metropolitan Region Development Authority (MMRDA) is constructing an extensive Mumbai Metro network of 12 lines, spanning 337.1 km across the Mumbai Metropolitan Region (MMR). Of these, four lines covering 58.9 km (including the 12.44 km underground Aqua Line 3) are operational, while eight lines covering 165.7 km are at various stages of construction, with the remaining corridors still in the planning and tendering phase. At least four Metro corridors have been targeted for completion by December 2025.
Yellow Line 2B
Route: DN Nagar (Andheri) – Mandale (Mankhurd)
Cost: Rs 10,986 crore
Status: 83% complete; track work and finishing ongoing