O.C.G.A. § 32-10-12: Designation of projects as part of county and municipal public road systems and as part of state highway system.

Each county or urban road project leased by the authority to the state and the department, upon completion of the action with respect thereto undertaken by the authority, shall be a part of the system of public roads of the state and of the county or counties or incorporated municipality or municipalities wherein the project is located; but no such project shall become a part of the state highway system until designated as such as provided by law.