Patna Metro Rail Project: Technical Profile

The Patna Metro Rail Project is a state-of-the-art mass rapid transit system under construction in Patna, Bihar, designed to mitigate severe traffic congestion and environmental pollution. The project comprises two primary corridors with a total length of 30.91 km, integrating elevated and underground sections to enhance urban mobility. Its implementation leverages advanced technologies like Communication-Based Train Control (CBTC) to establish a modern, efficient, and sustainable public transportation network.

Technical Specifications

The engineering framework of the Patna Metro is defined by its two-corridor alignment and advanced operational systems. Corridor 1 extends 17.78 km from Danapur to Khemni Chak, featuring 14 stations (8 elevated, 6 underground). Corridor 2 runs 13.2 km between Patna Junction and the New ISBT, with 12 stations (6 elevated, 6 underground). A significant portion of the network, approximately 16.12 km, is constructed underground, primarily through dense urban areas, utilizing Tunnel Boring Machines (TBMs) for precision excavation.

Signaling and train operations are managed by a Communication-Based Train Control (CBTC) system, which includes Automatic Train Protection (ATP), Automatic Train Supervision (ATS), and Automatic Train Operation (ATO) for high-frequency, safe train movements. The rolling stock consists of modern stainless steel or aluminum-bodied trains in three and six-car configurations. Power is supplied via a 25 kV AC overhead line system, ensuring efficient and reliable energy for the fleet.

Key Takeaways

• Urban Decongestion: The project directly addresses Patna’s critical traffic congestion by providing a high-capacity alternative to private vehicles, expected to significantly reduce travel times and road saturation.
• Technological Integration: By deploying advanced CBTC signaling, automated fare collection (AFC), and robust telecommunication systems, the Patna Metro is establishing a benchmark for modern transit infrastructure in the region.
• Economic and Environmental Impact: The metro system is poised to become an engine for economic growth by improving connectivity and reducing logistics costs, while also curbing carbon emissions and improving air quality for a more sustainable urban environment.

Patna Metro FAQ

When will the Patna Metro open?
The Patna Metro is being constructed in phases. The priority corridor is expected to become operational between 2026 and 2027, with the entire 30.91 km network scheduled for full completion in subsequent years. Official timelines are subject to construction progress.

Who is building the Patna Metro?
The project is being executed by a consortium of leading infrastructure firms. Key civil works are handled by Larsen & Toubro (L&T) for underground tunnels and stations, and Nagarjuna Construction Company (NCC) and YFC-Montecarlo JV for elevated viaducts. The Delhi Metro Rail Corporation (DMRC) is serving as the General Consultant, providing technical expertise and project management oversight.