Travel On Us 278 (Jimmy Lee Smith Parkway), Head Toward Dallas, Ga. Traveling From Ga 360 (Macland Road), Follow It Until It Merges Into Merchants Drive, Then Continue To Us 278. Once On Us 278 In Dallas, Look For Old Mill Road. Turn Onto Old Mill Road (It Will Be On Your Right If You’Re Heading West On Us 278). Drive About 1 Mile On Old Mill Road. Old Mill Preserve Will Be On Your Right At 1102 Old Mill Road.