If I ain't mistook - 79 starts out as Stage Road (which was a stage coach route at one time) and all the little towns along it have county and local mounties that will dog your bumper from one city limit to the other.
I think your wrong about where Highway 79 starts. It runs from Louisiana north. Its the main highway between Homer & Minden La. I grew up on a farm between these towns. I don't know where 79 goes north of Tn.