ADN
| Ashley Drew & Northern | 7 |
ALM
| Arkansas Louisiana and Mississippi Railr | 10 |
ANR
| Angelina and Neches River Railroad | 1 |
CSX
| CSX Railroad | 1 |
GTRA
| Golden Triangle Railroad | 2 |
IFRX
| Infinity Rail LLC | 1 |
LRWN
| Little Rock & Western | 1 |
NS
| Norfolk Southern | 1 |
SP
| Southern Pacific | 1 |
UP
| Union Pacific Railroad Company | 1 |