From I-75 At Jonesboro Road, Take Exit 221 And Turn Left Onto Jonesboro Road (Ga-81), Heading East Toward Mcdonough. Continue For About 7 Miles Until You Reach Old Jackson Road On Your Right. Continue For About 1/2 A Mile. Go Straight Through Roundabout And 315 Will Be Immediately On Your Left. For The Most Accurate Directions, Consider Using A Gps Navigation System.