Walkers Mill Community Address Is 4171 Edgeland Hwy. Edgemoor, Sc 29712. From Charlotte: Take I-77 To The Mt. Holly Rd Exit (901) To The Left. Mt. Holly Rd Turns Into Edgeland Hwy (901). Turn Right Into Community. 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.