Chennai Metro Extension Near Government Review
Chennai is moving closer to adding a new underground metro connection linking the city’s southern waterfront with its historic administrative quarter, with the Detailed Project Report for the proposed corridor expected to reach the Tamil Nadu government shortly. The project could strengthen public transport access to major employment centres and civic institutions while supporting a more sustainable mobility network across the city.
According to officials familiar with the development, technical studies for the proposed underground metro corridor connecting Light House and Madras High Court have been completed. The report is likely to be examined by the state government before subsequent approvals from the Centre are pursued. The planned alignment spans nearly 5.7 kilometres and has been designed entirely below ground. Four stations have been proposed along the route at Ezhilagam, Island Grounds, Secretariat and Madras High Court. The estimated investment for the project is around ₹4,300 crore.
Urban planners say the proposal addresses a long-standing gap in connectivity between Chennai’s coastal districts and the administrative core of the city. The area houses several government offices, public institutions and event spaces that attract large daily footfalls but remain heavily dependent on road-based transport.The new underground metro corridor would effectively extend Corridor 4 of Chennai Metro’s Phase II programme. Light House station, currently under construction, is expected to serve as an important interchange point on the east-west network stretching from Poonamallee through densely populated neighbourhoods including Vadapalani, Kodambakkam, T Nagar, Nandanam, Alwarpet and Mylapore.Transport experts note that improving rail access to government complexes and commercial zones could help reduce pressure on buses and private vehicles. Such shifts are increasingly viewed as essential for lowering congestion, reducing transport-related emissions and improving urban productivity in rapidly growing metropolitan regions. The Island Grounds station could also enhance access to one of Chennai’s largest public event venues, potentially benefiting visitors and temporary workers during exhibitions and large gatherings.
Meanwhile, improved connectivity to Secretariat and Ezhilagam may shorten travel times for thousands of employees and citizens accessing public services.Infrastructure analysts point out that underground construction, though capital intensive, helps preserve surface space in highly built-up districts where land availability is limited. It also allows cities to expand mass transit networks without significantly disrupting existing neighbourhoods and heritage zones. The project now enters a critical phase, with approvals and financing decisions likely to determine its timeline. If sanctioned, the corridor would further strengthen Chennai’s transition towards a more integrated and low-carbon urban mobility system, while improving everyday access to jobs, governance centres and public spaces.
Chennai Metro Extension Near Government Review
