Referring to my statement, " Incidentally the direct Memphis-Louisville line is no more, either."
New Johnsonville DuPont plant is on the ex NC&StL line west out of Nashville. This line is (probably still?) CTC from Nashville to Bruceton TN. For reference to those in the other parts of the world, the Tennessee River bridge is just west of New Johnsonville and immediately north of the US 70 bridge. Rail traffic on the line is low enough that the standard position of the lift span is up unless a train is approaching. New Johnsonville is 80 miles west of Nashville and Bruceton is 95 miles west of Nashville. According the the CSX "Nashville Service Lane Maps what is left is the following: The former NC&StL Memphis line which went south out of Bruceton to go through Jackson TN is gone except for a few miles in the Jackson vicinity accessed by trackage rights out of Milan TN on the NS (ex ICRR). When the NC&StL was still independent this portion was also CTC. Now Memphis freight goes on the former NC Union City branch to McKenzie where it is connected to the former L&N direct line to Louisville. A look at Google maps shows the Louisville line gone north of the wye, even to the point that the ex NC diamond is gone but the NC line is in place as far as Dresden. As to the original L&N Louisville-Memphis line out of Bowling Green, the Tennessee River bridge was removed sometime around the early 70's and the line leading up to it from both ends either abandoned or sold off for the entire distance between Memphis Jct at Bowling Green and McKenzie TN. The remaining portion between McKenzie and Memphis is not signaled and never has been. There are only two long sidings in the entire 130 mile distance. Bruceton-McKenzie-Memphis.Yes, it was TT/TO when I rode over it on the Memphis Pan. Are you sure that portion hasn’t been upgraded for PTC. Large chemical plant at New Johnsonville (ex DuPont) plus traffic to/from Old Hickory would require PTC if routed via Memphis. The ex L&N Memphis branch stops at Cumberland City. Rode there a few times on current operator RJ Corman.