L&T achieves third tunnel breakthrough under Patna metro rail project phase-I

Larsen & Toubro Limited (L&T) has achieved its third tunnel breakthrough under package PC-03 at Patna Junction station for the Patna metro rail project phase I. It was commissioned at Gandhi Maidan station in November 2023 and travelled for 1.7 km till Patna Junction.

The package PC-03 involves design and construction of a twin tunnel by shield tunnel boring machine (TBM), tunnel by cut and cover, underground ramp at Rajendra Nagar and six underground stations, viz. Rajendra Nagar, Moin Ul Haq Stadium, University, Patna Medical College and Hospital (PMCH), Gandhi Maidan and Akashvani with entry/exits and connecting subway including architectural finishing, water supply, sanitation installation and drainage works in corridor 2. L&T was awarded the contract for the package in December 2021.

The phase I of the project involves the development of a 32.5 km long metro rail network in Patna and Bihar at an estimated cost of Rs 139.25 billion. It involves the development of two corridors, viz. corridor 1 (Danapur Cantt-Mithapur) and corridor 2 (Patna Junction-Patna ISBT).