State Route 159
State Route 159 (SR 159) is a west to east highway in the U.S. state of Tennessee that is 12 miles (20 km) long. It begins in Carter County at State Route 67 and ends in Johnson County at the North Carolina state line. State Route 159 is little-known by the general public by this designation as it is overlain by U.S. Route 321; the "159" designation is seen on mileposts.SR 159, overlain by US 321, traverses 12.5 miles (20.1 km) along the banks of Watauga Lake. It is a curvy two-lane mountain highway.
State Route 159 Images: