Ambala Chandigarh Expressway is four-lane 35 km long, high-traffic density corridor of Ambala-Chandigarh section (km 5.735 to km 39.960 on NH-22 and 0 km to 0.871 km on NH 21) on BOT basis, was completed in 30 months at a cost of ₹2.98 billion (US$45 million) The expressway has been operational since December 2009 and was constructed by the GMR Group with assistance from the World Bank.