Proposed Metro Corridors of Patna PROPOSED METRO CORRIDORS LENGTH (K.M.) PHASE – I CORRIDOR-IA East-West Metro Corridor Danapur-Mithapur/Bypass Chow Via Patna Railway Station 14.50 CORRIDOR-IB Digha Link Metro Corridor Digha Ghat-High Court/Vikas Bhawan 5.50 CORRIDOR-II North-South Metro Corridor Patna-Railway Station-ISBT Via Gandhi Maidan-PMCH-Rajendra Nagar Railway Station-Kumhrar-Zero Mile 16.00 PHASE-II CORRIDOR-III Mithapur/Bypass Chowk-Didarganj 13.00 PHASE-III CORRIDOR-IV Mithapur/Bypass Chowk-Phoolwari Sharif/AIIMS