Starting From Atlanta, Ga: Get On I-75 S/I-85 S: Head South On Peachtree St. Use The Right Lane To Take The Ramp Onto I-75 S/I-85 S. Follow I-75 S: Merge Onto I-75 S/I-85 S And Continue On I-75 S. Stay On I-75 S For About 18 Miles. Take Exit 228 For Ga-138 Toward Stockbridge: Use The Right Two Lanes To Take Exit 228 For Ga-138 E Toward Stockbridge.