Beware: if you're leaving the rental car lots and drive away from the airport on the same road that used to lead to Wilkinson Boulevard (eventually), it's now rerouted, and after driving past all of the rental car lots, you'll soon be forced to bear left and will be on a road around the airport. It took me about 10+ minutes to finally get to an entrance to I-485, which worked for me, but if you're heading uptown, you'll be way off track.