Tennessee Code Title 54. Highways, Bridges and Ferries § 54-5-503

In order for the citizens of the state to get the greatest possible use from the interstate highway system or fully controlled access highways, the department is authorized to use any powers granted under any general law to establish a system of connectors so located and spaced as to furnish adequate access to the interstate highway system or fully controlled access highways from the existing road and street networks along the interstate system or fully controlled access highways.