 At Lake Norman, I-77 crosses into Iredell County and becomes a more suburban interstate, passing by Mooresville and then Statesville, where it intersects with Interstate 40.It turns more rural outside of Statesville and becomes entirely rural after exiting Iredell County.For the rest of I-77's stretch through North Carolina, the only possible rest stop is the town of Elkin; the speed limit through this area is 70 mph (110 km/h).