U.S. Route 421 (Shady Street) connects Mountain City with Bristol, Tennessee, to the northwest and Boone, North Carolina, to the southeast. Tennessee State Route 67 traverses the Doe Creek Valley on the north side of Doe Mountain and connects Mountain City with Carter County and the Watauga Lake areas to the west. State Route 167 follows the Roan Creek Valley on the south side of Doe Mountain, rejoining S.R. 67 at Shouns in the southern part of Mountain City. Tennessee State Route 91 connects Mountain City to Laurel Bloomery, Tennessee, and Damascus, Virginia, to the north (the road becomes Virginia State Route 91 at the state line).
us route 421 (shady street) connects mountain city with bristol tennessee to the northwest and boone north carolina to the southeast tennessee state route 67 traverses the doe creek valley on the north side of doe mountain and connects mountain city with carter county and the watauga lake areas to the west state route 167 follows the roan creek valley on the south side of doe mountain rejoining sr 67 at shouns in the southern part of mountain city tennessee state route 91 connects mountain city to laurel bloomery tennessee and damascus virginia to the north (the road becomes virginia state route 91 at the state line)