The Delhi Metro Rail Corporation has invited bids for the design and construction of twin underground tunnels and two new subterranean stations under Phase V(A) of the Delhi Metro project along the Central Vista corridor. The scope covers a critical urban stretch and specifies integration with existing metro infrastructure to enhance access in a sensitive administrative area.\n\nDMRC indicated the tunnel alignment will include twin bores between Shivaji Stadium and Central Secretariat to be constructed using tunnel boring machines, and a cut-and-cover tunnel stretch extending to Kartavya Bhawan. The contract encompasses construction of Central Secretariat and Kartavya Bhawan stations together with entry and exit structures, pedestrian subways and related civil works. The successful contractor will be responsible for design and execution, structural works, tunnelling, station fit-outs, utility integration and associated infrastructure.\n\nDetailed geotechnical surveys and continuous ground monitoring will be required, with real-time instrumentation systems deployed to control ground settlement and protect nearby buildings and utilities. The tunnels will run close to operational metro corridors, requiring careful coordination to maintain uninterrupted services and to minimise risk to existing structures. Advanced construction technology and monitoring protocols are expected to be employed to ensure safety in the high-security administrative zone.\n\nThe announcement follows cabinet approval of three new corridors under Phase V(A) at an estimated cost of Rs. 120.14 bn, which will add over 16 km to the network. Approved corridors comprise RK Ashram Marg to Indraprastha via Central Vista, Tughlakabad to Kalindi Kunj, and Aerocity to Indira Gandhi Domestic Terminal-one. The RK Ashram Marg–Indraprastha corridor is expected to provide direct metro access to Kartavya Bhawan and surrounding offices, benefiting nearly 60,000 office-goers and around zero point two mn visitors daily. Officials expect the expansion to reduce traffic congestion, curb pollution and ease daily commutes for thousands of people, with final timelines to be determined after the bidding process concludes.