BN
| Burlington Northern | 4 |
BNSF
| BNSF Railway | 4 |
CBQ
| Chicago Burlington & Quincy | 2 |
CLC
| Columbia and Cowlitz Railway Company | 1 |
MRL
| Montana Rail Link | 1 |
PNWR
| Portland and Western Railroad Incorporat | 6 |
SP
| Southern Pacific | 9 |
UP
| Union Pacific Railroad Company | 7 |