MML-3 is a 33.5 KMs long underground corridor running along Colaba-Bandra-SEEPZ. Length of the corridor is marked with 27 key stations out of which 26 will be underground and 1 at grade. The details of the stations are:
| Sr. No. | Stations | Inter station | Chainage (m) | Interchange |
|---|---|---|---|---|
| 1 | Cuffe Parade | 0 | 0.00 | |
| 2 | Vidhan Bhavan | 600 | 1,438 | |
| 3 | Churchgate | 685 | 2,216 | WR Suburban station |
| 4 | Hutatma chowk | 817 | 3,087 | |
| 5 | CST Metro | 854 | 3,902 | CR Terminus |
| 6 | Kalabadevi | 935 | 4,754 | |
| 7 | Girgaon | 725 | 5,452 | |
| 8 | Grant Road | 1540 | 7,035 | WR Suburban Station |
| 9 | Mumbai Central Metro | 911 | 7,951 | WR Terminus, ST bus depot |
| 10 | Mahalaxmi | 1149 | 9,047 | WR Suburban Station |
| 11 | Science Museum | 1100 | 10,208 | |
| 12 | Acharya Atre Chowk | 1200 | 11,256 | |
| 13 | Worli | 1408 | 12,723 | |
| 14 | Siddhivinayak | 1555 | 14,286 | |
| 15 | Dadar | 1277 | 15,683 | |
| 16 | Sitaladevi | 1769 | 17,364 | |
| 17 | Dharavi | 1781 | 19,095 | |
| 18 | BKC | 1919 | 20,925 | |
| 19 | Vidyanagari | 1587 | 22,138 | |
| 20 | Santacruz | 1215 | 23,155 | |
| 21 | Domestic Airport | 2272 | 25,510 | |
| 22 | Sahar Road | 1607 | 27,220 | |
| 23 | International Airport | 1052 | 28,202 | |
| 24 | Marol Naka | 871 | 29,200 | Metro Line 1 |
| 25 | MIDC | 1396 | 30,380 | |
| 26 | SEEPZ | 1321 | 31,697 | |
| 27 | Aarey Depot | 33,000 |