The $636 million I-77 Express Lanes will be a 26-mile, express toll lane facility in the median of I-77 extending through Charlotte, North Carolina and its northern suburbs. The project converts existing high-occupancy vehicle (HOV) lanes on I-77 to express lane operation and adds a second express lane in both directions on a 19-mile segment of I-77 between Downtown Charlotte (Exit 11) and West Catawba Avenue in Cornelius (Exit 28). From there, a single express lane will extend north for eight miles to Exit 36 in Mooresville in Iredell County. Motorcyclists, buses and carpoolers with three or more occupants will be able use the Express Lanes at no cost. Other vehicles will be charged tolls that vary in real time according to congestion levels in the corridor.