The Union transport ministry has fast tracked construction work of the ₹12,500 crore Bengaluru–Chennai expressway in a phased manner. Out of 10 construction packages, work is currently in full swing on six packages. In Tamil Nadu, the road covers 106 km and work has begun on three packages. The last package, which runs for a length of 12 km with the other half in Andhra Pradesh, has also been awarded. The length of the greenfield fully access-controlled signal-free elevated expressway is 262 km and runs through Karnataka (71 km), Andhra Pradesh (85 km) and Tamil Nadu (106 km) and the project is destined for completion in two years.
In Tamil Nadu, the expressway would crisscross Kancheepuram, Tiruvallur, Vellore and Ranipet districts where it is being taken up under the National Highways Development Program and on completion would allow motorists to reach Bengaluru in less than three hours from Chennai.