From I-85 North And Merge Onto Ga-400 North. After About 5 Miles, Take Exit 4A To Merge Onto I-285 East. Follow I-285 For 2 Miles, Then Take Exit 29 For Ashford Dunwoody Road. Turn Left Onto Ashford Dunwoody, Then Left Onto Perimeter Center West. Continue Straight To Reach Huntington Circle. The Drive Takes About 20-30 Minutes, Depending On Traffic.