Live Chat I-20 Community Nearby Traffic Castle Lake Dam (Water dam) 2024-06-06 Roadnow Weather | Gas | Restaurants | Hotels | Car Repair | Convenience Stores Cities close to Castle Lake Dam (Water Dam) Alpharetta, GA 0.00 Roswell, GA 0.00 Smyrna, GA 4.45 Interstate highway exits close to Castle Lake Dam (Water Dam) Exit 16, i285ga 1.24 Exit 18, i285ga 2.29 Exit 15, i285ga 2.57 Interstate highways close to Castle Lake Dam (Water Dam) i285ga map 1.24 i75 map 3.91 i20 map 9.05 State roads close to Castle Lake Dam (Water Dam) GA 280 map 1.99 GA 8 map 6.15 GA 70 map 7.43