SP RS11 page
This page is dedicated to SP's fleet of ALCO RS11 locomotives. The SP rostered 37 RS11's including 3 former ALCO demonstrator units and 6 low hood units.
Original orders:
The SP purchased RS11's as follows:
SP:
| Orig. road numbers | ALCO const. no. | build date |
| SP 5720-5722 | 81456-81458 | 02/1956 (demonstrators) |
| SP 5723-5729 | 82043-82049 | 11/1956 |
| SP 5845-5856 | 83407-83418 | 04-05/1959 |
| SP 5857-5859 | 83432-83434 | 05/1959 |
| SP 5860-5865 | 83445-83450 | 08/1959 |
| SP 5866-5871 | 83451, 83487-83491 | 08-09/1959 (low hood) |