Gps Address For Walkers Mill Model Home - 711 Mile Creek Rd. Edgemoor, Sc 29712. Driving Directions From Charlotte - Take I-77 To The Mt Holly Rd Exit (901) To The Left. Mt. Holly Rd Turns Into Edgeland Hwy. Turn Right Into Community. Driving Directions From Columbia - Take I-77 To The Lancaster Hwy Exit (9/901) To The Right. Turn Left On Edgeland Hwy (901). The Community Entrance Will Be On Your Left.