The Blue Line of Patna Metro (also known as North – South Corridor or Corridor 2) is a rapid transit line currently under construction in Patna, Bihar, India. The line connects Patna Junction railway station (central Patna) with Patliputra Inter-State Bus Terminal (New ISBT) on State Highway 1. The Blue Line is mostly underground, covering (), but it also includes a elevated section. There are 12 stations on the line.

Blue Line will have two interchanges with the Red Line at Patna Junction and Malahi Pakdi stations. The red line is under construction.

The entire line is planned to open in two phases. The first phase, known as the priority corridor, spans a total distance of 6.1 km stretch (Malahi Pakri – Patliputra Bus Terminal) (New ISBT), and was scheduled for initial commissioning, whereas the second phase, covering the remaining stretch of 8.45 km (Patna Junction – Rajendra Nagar) is expected to be operational around December 2028. A 3.6 km stretch of this corridor was opened to the public on 7 October 2025.

Operations and maintenance are currently being handled by the Delhi Metro Rail Corporation (DMRC) under a minimum three-year arrangement.

History The original DPR prepared by RITES had proposed a route from PMCH to New ISBT, passing through Premchand Rangashala, Rajendra Nagar Terminal, Nalanda Medical College and Hospital (NMCH), Kumhrar, Gandhi Setu to Zero Mile. However, Chief Minister Nitish Kumar later decided against this alignment, as it ran through the historically significant city of Patliputra, encompassing heritage areas like Kumhrar and Patna City. The route was deemed unsuitable due to its potential impact on these sites. Subsequently, when the Delhi Metro Rail Corporation (DMRC) prepared their DPR, the alignment was revised to pass through Moin-ul-Haq Stadium, Malahi Pakdi, Khemnichak, and Bhootnath Road.

The foundation stone of the metro project was laid by the Prime Minister of India, Narendra Modi, on 17 February 2019.

Progress on this line unfolded in key stages: Soil testing began on 1 November 2019 at Malahi Pakri. Groundwork commenced on 26 November 2020. The first pier cap was cast on 28 April 2022. On the occasion of India's Republic Day, the first Precast viaduct U-girder span was placed between two pillars, P-103 and P-104, near the proposed Bhoothnath Station. The first Tunnel Boring Machine (TBM) completed tunneling at Moin-ul-Haque Stadium on 22 July 2023, marking a significant milestone for the underground segment of the corridor. ⁠The first trial run was successfully conducted on 2 September 2025 between Patliputra Bus Terminal and Bhootnath Metro Stations. The final and crucial trial was held on 29 September 2025, ahead of public inauguration. Three stations of this line were inaugurated on 6 October 2025 by Chief Minister Nitish Kumar and opened to the public on 7 October 2025. This event marked the official beginning of the Patna Metro. On 2 July 2026, the Blue Line was extended to Malahi Pakri.

Stations The line will have a total of 12 stations. The northern end of the line, which is underground, features seven underground stations, while the southern end, which is elevated, has five elevated stations.

Interchanges Passenger interchange facilities for connections to other metro and railway lines will be available at the following stations: Khemnichak: This station will offer interchange access to the Red Line, which will operate between Khemnichak and Danapur Cantonment. Patna Junction: This station will also connect to the Red Line, offering transfer along the route from Khemnichak and Danapur Cantonment. Additionally, it will provide direct connectivity to Patna Junction railway station operated by Indian Railways, ensuring easy access to long-distance and regional train services.

#Station nameOpeningInterchange connectionStation layoutPlatform level type*EnglishHindi1पटना जंक्शन Under construction (Under construction)UndergroundIsland2आकाशवाणी Under constructionNoneUndergroundIsland3गांधी मैदान Under constructionNoneUndergroundIsland4पीएमसीएच Under constructionNoneUndergroundIsland5पटना साइंस कॉलेज Under constructionNoneUndergroundIsland6मोइन-उल-हक स्टेडियम Under constructionNoneUndergroundIsland7 राजेंद्र नगरUnder construction UndergroundIsland8 मलाही पकरी2 July 2026NoneElevatedSide9 खेमनीचक2 July 2026 (Under construction)ElevatedSide10भूतनाथ7 October 2025NoneElevatedSide11 ज़ीरो माइल7 October 2025NoneElevatedSide12 पाटलिपुत्र बस टर्मिनल 7 October 2025 Patliputra ISBTElevatedSide

*To be confirmed

Train info Blue LineRakesTitagarh Firema#Train length3Train gauge broad gaugeElectrification25 kV, 50 Hz AC through overhead catenaryOHETrain's maximum operating speed80 km/h##Train operationPatna Metro # The rolling stock currently in operation is leased rather than owned. ## The system is designed for a speed of 90 km/h. However, the maximum operating speed is limited to 80 km/h in general section, 80 km/h within underground stations, and 70 km/h at elevated and at-grade stations.

See also

Urban rail transit in India List of metro systems Delhi Metro

References