O.C.G.A. § 32-6-118 (2019)

In connection with the development of any limited-access facility, the department, a county, or a municipality is authorized to plan, designate, establish, use, regulate, alter, improve, maintain, abandon, and dispose of local service roads or streets or to designate as local service roads any existing public road and to exercise jurisdiction over service roads in the same manner as authorized over any other public roads on their public road systems if such local service roads are deemed necessary or desirable. Such local service roads shall be of appropriate design and shall be separated from the limited-access facility property by means of any or all devices designated as necessary or desirable by the proper authority.