From Google Maps:
"Quick facts
Tusculum is a city in Greene County, Tennessee, United States. The population was 3,298 at the 2020 census. It is the site of Tusculum University, the oldest university in Tennessee and the 28th oldest in the United States. Tusculum is a suburb of nearby Greeneville."
By the way, West Point, that third through train was the Birmingham Special. It was the last passenger train on the line, despite at least during the early to mid 1960's both the Tennessean and the Pelican carried more passengers.
This whole line down the valley Roanoke to Knoxville is excruciatingly slow, and that not due to low maximum speeds but to curvature, which is near continuous. This from memory, as I do not have my old TT's at hand, Bristol to Knoxville is 130 miles by rail and a run time of somewhere above three hours. Google maps says I-81 is 114 miles and under two hours. Bristol north to Roanoke is/was also relatively slow by rail. I suspect ridership on this line would be relatively low, as it would be mostly people who don't want to or can't drive and don't want to take a bus, assuming such is available. Doubt there is much if anything in the way of flights except maybe Knoxville to DC or NY.