Fort Loudon Lock, 6699 Highway 321 S, Lenoir City, TN 37772, US

The Tennessee Department of Transportation is also responsible for overlooking road and other forms of transportation in the state, including aviation, public transit, waterways and railroads. The department's involvement ranges from airport improvements to funding transit buses, as well as planning for the development of river ports. The Tennessee Department of Transportation provides aviation safety, transit management, and railroad rehabilitation and mobility services. The department s road system stretches for more than 87,000 miles and includes state-maintained and interstate highways. The Tennessee Department of Transportation maintains its headquarters in Nashville, Tenn.