The Tamil Nadu government is significantly increasing its capital expenditure to enhance the state’s infrastructure. For the fiscal year 2025-26, the allocated budget for capital expenditure is ₹57,231 crore, marking a 22% increase from the ₹46,766 crore set in the Revised Estimates for 2024-25. Projections suggest that capital expenditure will rise to ₹71,539 crore in 2026-27 and ₹89,423 crore in 2027-28.
This ambitious capital outlay for FY26 comes even though the state slightly underperformed compared to the originally budgeted capital expenditure in FY25, which was ₹47,681 crore, with a revised estimate of ₹46,766 crore.
A significant portion of this capital expenditure is earmarked for enhancing road infrastructure, allocating more funds for metro rail projects, and improving drinking water systems, particularly in Chennai and other urban areas. Among the key initiatives announced is the ‘Ring Main Pipeline Project’, which aims to connect all water distribution stations to guarantee equitable water supply throughout Chennai. This project is set to be implemented over three years at an estimated cost of ₹2,423 crore.
With rapid economic growth and urban expansion in Tamil Nadu, the state government is also considering establishing a Regional Rapid Transit System (RRTS) across three routes, mirroring the Semi High-Speed Railway (SHR) model between New Delhi and Meerut.
The Chennai Metro Rail Corporation will conduct comprehensive feasibility studies for the proposed SHR system, which would reach speeds of 160 kmph, covering the following stretches: Chennai–Chengalpattu–Tindivanam–Villupuram (167 km), Chennai–Kanchipuram–Vellore (140 km), and Coimbatore–Tiruppur–Erode–Salem (185 km), as per the 2025-26 budget.
The minister highlighted that the Phase-II project of the Chennai Metro Rail, which is the largest ongoing metro rail initiative in India, is being implemented at a cost of ₹63,246 crore along three corridors with a total length of 119 km. The project is advancing rapidly, with the elevated corridor between Poonamallee and Porur expected to be opened to the public by December of this year.
Additionally, detailed project reports (DPRs) have been submitted for new metro rail projects in Coimbatore, covering routes along Avinashi Road and Sathyamangalam Road, estimated at ₹10,740 crore, and for the corridor connecting Thirumangalam and Othakadai in Madurai, estimated at ₹11,368 crore. Construction will commence once approvals from the Union Government are granted.
Further DPRs are planned for extending the Chennai Airport metro line to the Kalaignar Centenary Bus Terminus in Kilambakkam, covering 15.46 km at an estimated cost of ₹9,335 crore; extending the Koyambedu line to Pattabiram via Avadi, spanning 21.76 km at a cost of ₹9,744 crore; and for a 27.9 km extension of the metro line from Poonamallee to Sunguvarchatram through Sriperumbudur, estimated at ₹8,779 crore.
Moreover, the Chennai Metro Rail Corporation will explore the feasibility of high-altitude transport systems, such as ropeways, in tourist areas like Mamallapuram, Udhagamandalam, and Kodaikanal.
To further enhance tourism in southern Tamil Nadu and foster development in economically underprivileged regions, a new airport is planned for the Rameswaram area in Ramanathapuram district.
Road Transport Initiatives
The budget also includes initiatives to improve transportation services in Tamil Nadu’s remote villages, with ₹1,031 crore allocated for acquiring 3,000 new buses. Additionally, 750 existing buses with functioning chassis will undergo refurbishment at an estimated cost of ₹120 crore.
To boost operational efficiency, service delivery, and the financial health of State Transport Undertakings (STUs), an incentive fund of ₹2,000 crore will be set up in the coming fiscal year to provide performance-linked incentives to these transport entities.
Addressing Traffic Congestion in Chennai
In response to escalating traffic congestion in Chennai, the Tamil Nadu State Highways Authority (TANSHA) will construct a 14.2 km long four-lane elevated road from Thiruvanmiyur to Uthandi along the East Coast Road, at an estimated cost of ₹2,100 crore.
Industrial Corridor Development
The government is committed to developing multiple industrial corridors to foster industrial growth and create more job opportunities. The first phase of this initiative will establish the Oragadam-Cheyyar Industrial Corridor, aimed at enhancing the export capabilities of products manufactured in the Cheyyar Industrial Park, with development work valued at ₹250 crore scheduled for this fiscal year.
