Northeast Frontier Railway (NFR) has achieved breakthrough of a 3.94 km long T-4/P2 tunnel located in Darjeeling district in connection with the Sevoke-Rangpo new rail line project.
The project involves construction of 44.96 km long new broad-gauge line connecting Sevoke in West Bengal to Rangpo on the West Bengal-Sikkim border at an investment of Rs 78.76 billion.