ATSF
| Atchison Topeka & Santa Fe | 1 |
BN
| Burlington Northern | 3 |
BNSF
| BNSF Railway | 1 |
CNW
| Chicago & Northwestern | 5 |
GWWR
| Gateway Western | 2 |
HZGX
| Herzog Contracting Corporation | 1 |
MP
| Missouri Pacific | 1 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 1 |
SOU
| Southern | 2 |
SPMW
| Southern Pacific Maintenance of Way | 7 |
UP
| Union Pacific Railroad Company | 1 |