A 16.72 km long metro line from Joka (in extreme South Kolkata) and BBD Bagh (in central Kolkata) is under construction. It is being built by RVNL and the tender has gone to Simplex Infrastructures.

Proposed stations on this route:


The proposed Esplanade station will not to be the same as that of Line 1 (North-South Metro) but a completely different station. Park Street will serve as an interchange between Line 3 and Line 1.

లైన్ 4 (నౌపారా-బర్సాత్ మెట్రో)
ఇన్‌ఫ్రాస్ట్రక్చర్
లైన్ 3 (జోకా-బిబిడిబాగ్ మెట్రో)
లైన్ 6 (న్యూ గరియా-బిమన్ బ్యాండర్ మెట్రో)