Tenn. Code Ann. § 42-5-105

For the purposes of this chapter, a municipality may establish or acquire and maintain, within or bordering upon the territorial limits of the municipality, airports in, over and upon any public waters of this state, any submerged lands under such public waters, and any artificial or reclaimed lands that before the artificial making or reclamation thereof constituted a portion of the submerged lands under public waters; and may construct and maintain terminal buildings, landing floats, causeways, roadways, and bridges for approaches to or connecting with any such airport, and landing floats and breakwaters for the protection of any such airport.