Tennessee State Route 120 is a north-south highway on the western side of Fort Campbell, in Stewart County. TN St Rt 120 passes through the followingtown in Stewart County. Big Rock TN St Rt 120 is not multi-plexed in Stewart County. TN St Rt 120 intersects the following highways in Stewart County. Kentucky State Route 139, at the Kentucky/Tennessee State Line. U.S. Rt. 79, near Big Rock. Tennessee State Route 76, near Big Rock.
