ATSF
| Atchison Topeka & Santa Fe | 5 |
BN
| Burlington Northern | 34 |
BNSF
| BNSF Railway | 2 |
BO
| Baltimore & Ohio | 2 |
CBQ
| Chicago Burlington & Quincy | 5 |
CN
| Canadian National Railways | 3 |
CRIP
| Chicago Rock Island & Pacific | 5 |
CSP
| Camas Prairie RailNet Incorporated | 8 |
CSX
| CSX Railroad | 2 |
DRGW
| Denver & Rio Grande Western | 2 |
EIRR
| Eastern Idaho Railroad Incorporated | 3 |
GN
| Great Northern | 4 |
KCS
| Kansas City Southern | 1 |
MILW
| Milwaukee Road | 3 |
MP
| Missouri Pacific | 1 |
MPEX
| Motive Power Industries | 2 |
MRL
| Montana Rail Link | 11 |
MSN
| Meeker Southern | 1 |
NLR
| NLR | 1 |
NP
| Northern Pacific | 2 |
PGE
| Pacific Great Eastern | 2 |
PGR
| Progressive Rail, Inc | 1 |
SLSF
| Saint Louis-San Francisco | 3 |
SOO
| Soo Line | 2 |
SP
| Southern Pacific | 1 |
STMA
| St. Maries River Railroad Company | 4 |
SVRY
| SVRY | 3 |
TMBL
| Tacoma Municipal Belt Line Railway | 4 |
UP
| Union Pacific Railroad Company | 14 |
WIM
| WIM | 1 |
WTCX
| Weyerhauser | 2 |