To Reach 5255 Biffle Downs Rd, Stone Mountain, Ga 30088 From The Nearest Interstate, Head East On I-285 From Downtown Atlanta. Take Exit 44 For Covington Highway (Us-278) And Turn Left Onto Covington Highway. Continue For About 1 Mile, Then Turn Left Onto Young Road. After Approximately 0.5 Miles, Turn Left Onto Panola Road. Continue For About 1 Mile, Then Turn Left Onto Biffle Downs Road. Your Destination, 5255 Biffle Downs Rd, Will Be On The Right.