Chennai, Aug 5:
Tamil Nadu has unveiled an ambitious Vision 2035 Road Infrastructure Plan, proposing the development of a 4,543.5-km road network at an estimated cost of ₹1.37 lakh crore to boost connectivity, ease congestion, and support industrial growth.
The roadmap, presented at the CII Tamil Nadu Infrastructure Summit 2026, has been jointly prepared by the National Highways Authority of India (NHAI) and the State Highways Department. It outlines 144 road corridors covering 4,543.5 km, with investments of ₹84,891 crore from NHAI and ₹52,105 crore from the State.
The plan focuses on strengthening connectivity to ports, airports, industrial hubs, and Tier-II cities, while reducing traffic congestion in urban centres, particularly Chennai.
According to officials, the proposed network includes 20 spine corridors, 21 link roads, industrial and coastal connectivity projects, nine airport connectivity corridors, and dedicated improvements within the Chennai Metropolitan Area. Transport master plans have already been approved for Coimbatore, Madurai, and Hosur, while Thoothukudi is awaiting clearance.
Chennai alone will see 13 new road projects spanning 164 km, with an estimated investment of ₹2,947 crore.
NHAI Regional Officer Virender Sambyal said that 855 km of national highway projects worth over ₹33,000 crore are currently under construction in Tamil Nadu. Additionally, around 2,500 km of highways, requiring investments exceeding ₹1 lakh crore, are in the pipeline.
Key projects under the roadmap include the Chennai–Trichy–Madurai greenfield access-controlled corridor, the Maduravoyal–Sriperumbudur elevated corridor, six-laning of the Chengalpattu–Tindivanam stretch of NH-32, and four-laning of the Nagapattinam–Thoothukudi–Kanyakumari corridor. Plans also include improved connectivity to Cuddalore Port and bypass projects in Coimbatore, Salem, and Tiruchirappalli.
Officials said the large-scale investments are expected to enhance freight movement, improve logistics efficiency, and support Tamil Nadu’s manufacturing and export-driven economy while driving long-term economic growth.