Georgia State Route 400 begins at Interstate 85 just north of Downtown Atlanta, goes through Buckhead, then has a junction with Interstate 285 before heading north into the northern Atlanta suburbs.
Georgia State Route 400 begins at Interstate 85 just north of Downtown Atlanta. Georgia State Route 400 goes through Buckhead. Georgia State Route 400 has a junction with Interstate 285 before. Georgia State Route 400 is heading north into the northern Atlanta suburbs.