Last revised: October 19, 2026
By: Adam Burns
The Chicago, Rock Island & Pacific diesel fleet, counted once, is 1,029 locomotives. A renumber is the same locomotive. A rebuild is the same locomotive unless the builder gave it a new serial. Six of those new-serial rebuilds are in the total: U28B 254 and 261, GP40 360 and 361, and GP18m 1238 and 1239. The railroad those engines worked, from the charter of February 27, 1847, through directed service in 1980, is the Rock Island page. The steam locomotives are a separate roster.
U30C 4582 and SD40-2 4795, circa 1975. Mike Bledsoe collection. American-Rails.com collection.
On this page: At a glance · Switchers · Cab units · Road-switchers · Roster
| Item | Detail |
|---|---|
| Railroad | Chicago, Rock Island & Pacific. Marks RI and CRIP. Company history |
| This table | Diesel locomotives, each frame once. A later number is the same locomotive. Serial and order are separate columns |
| Switchers | 221. The SW900 and SW900m numbers are rebuilds of the 1937–1938 SW fleet |
| Cab units | 243, boosters included. Nineteen F9Am and twelve F9Bm came from the Union Pacific and had not been on the roster before |
| Road-switchers | 557. Eight acquired Geeps have no printed serial. The GP7R numbers of Rock Island Geeps are the same frames |
| Also | Slugs 282 and 283, five RDC-3s, and Alco-GE bi-power boxcab 10000 |
| Frames | 1,029. FT 83–93 and 83A–93A are counted as eleven and eleven. Their serial spans are six numbers, so those serial cells are blank |
The switchers are 221 frames. Davenport built 30-ton and 44-ton engines, and two 112-tonners, 798 and 799. Whitcomb built five 44-tonners and, with the Canadian Locomotive Company, seventeen 75-tonners that came from Canadian National. Electro-Motive’s SW fleet of 1937 and 1938, numbers 500–528, is 29 locomotives. Those same frames were later rebuilt as SW900s and SW900m engines. The new numbers are not a second fleet. Alco’s switchers run from two S-1s and the HH900 demonstrator, No. 730, through the S-2s. Baldwin supplied VO-1000s, two S-12 demonstrators, and five S-8s. Lima-Hamilton built 800 and 801. The later Electro-Motive switchers are NW2s, SW8s, SW9s, SW1200s, and SW1500s, including SW1s from the Illinois Central and NW2s from the Pittsburgh & Lake Erie.
Slugs cut from switchers already in this table stay with those switchers. SW1 532 became slug 998, dedicated to the Silvis shop employees. SW1 544 became slug 999, named Pride of Armoudale. The two slugs that were new to the railroad, 282 and 283, are at the end of the roster.
The cab units and boosters are 243 frames. Six TA diesels, 601–606, built in 1937, were the power for the first Rockets. The FT freight locomotives followed in 1944 and 1945. Numbers 83–93 and 83A–93A are printed as eleven cabs and eleven boosters, and each of those rows is also printed with only six serials. The count uses the eleven road numbers. The serial cells are blank. F2s, F7s, and ten FP7s, 402–411, filled out the covered-wagon fleet. Sixteen FA-1s and eight FB-1s, 145–160 and 145B–152B, were later rebuilt as FA-1m and FB-1m engines and renumbered into the 120s. Those are the same twenty-four frames.
FA-1m 128 at Paris, Iowa, in June 1963. The rebuild used the frame of one of the sixteen FA-1s. Rick Burn photo.
Passenger cabs begin with the DL103b, two DL107s, and DL-109 621, which was repowered with an Electro-Motive engine and named Christine. E3s, E6s, E7s, and E8s followed, and E6A 627 was rebuilt as E8A 656 on the same frame. E6A 630 and E8A 652 are at the Manly Junction Railroad Museum. Two AB6s, 750 and 751, are E6B carbodies with one engine, a cab, and a steam generator. Three LWT-12s include the power car for the Jet Rocket. The railroad also bought nineteen F9Am and twelve F9Bm units from the Union Pacific. Those had not been Rock Island locomotives before, so they are in the count. F9Am 4158 was Union Pacific 522.
Rock Island FA-2 #128 leads a westbound consist about 7 miles west of Manhattan, Kansas during July of 1966. James Watson photo.
The road-switchers are 557 frames. General Electric’s contribution is 39 U25Bs, 42 U28Bs, 25 U33Bs, and 18 U30Cs. The U28B total includes 262–281, twenty engines of late 1966, and two new-serial rebuilds, 254 and 261, from wrecked U25Bs. The U33Bs are 190–199, 285–289, and 290–299. Slug 282 was rebuilt from Seaboard Coast Line U33B 1719. U25Bs 201, 203, 210, and 222 became slugs and are still those U25Bs.
Electro-Motive’s Geeps are the largest share. The GP7s are 122 engines. Later GP7R and GP9R numbers assigned to those engines, and to the railroad’s own GP9s, are the same frames. Eight GP7Rs came from other railroads and are counted: 4429, 4430, 4471, 4472, and 4475–4478. Their serials were not printed. Number 4478 is ex-Precision National 1504, ex-Norfolk & Western 3471, built as Wabash 471. The GP9s in the table are 19. GP9m 1322 and 1331 are rebuilds of an F2A and an FTB and are not added. GP9 1332, serial 25356, is counted. A second note gives serial 23643 to a GP9m that it also numbers 1332. That serial is the one tied to F2A 41. 1332 stays one locomotive in this count.
GP18s are 21, plus two GP18m engines, 1238 and 1239, which received new serials after F-unit wrecks. GP35s are 34. GP40 360 and 361 are new-serial rebuilds of wrecked GP35s 306 and 310. The rest of the GP40s, including 4700–4719, bring that model to 77. GP40-2 numbers 3000–3006 are rebuilds of those GP40s, and 3005 and 3006 were marked incomplete. They are not new frames. The GP38-2s are 68, in three builder orders. Ten SD40-2s, order 73676, and five BL2s, five RS2s, thirty-five RS3s, fifteen RS1s, ten C415s, and two Fairbanks-Morse H15-44s complete the road-switchers. Four RS1s went to the Army as RSD-1s without new serials. RS3 463 was renumbered 475 after a wreck. It is still one locomotive.
RS3 493 with an outbound commuter at the north end of the Beverly Branch in 1964. Rick Burn photo.
U30Cs at Silvis on July 11, 1988, with 4588 closest to the camera. The units were about fifteen years old. The railroad’s directed service had ended in 1980. Marty Bernard photo.
Five Budd RDC-3s, 9000–9004, have no printed serials. The first diesel on the property was Alco-GE bi-power boxcab 10000, built in April 1930, Alco 68399 and General Electric 11232, one locomotive.
| Builder | Model | Numbers | Qty | Serial | Order | Date | Notes |
|---|---|---|---|---|---|---|---|
| Davenport | 30-ton | 345–349 | 5 | 2344–2348 | — | 10–11/1941 | — |
| Davenport | 30-ton | 350 | 1 | 2305 | — | 6/1950 | — |
| Davenport | 44-ton | 351 | 1 | 2268 | — | 2/1939 | — |
| Davenport | 44-ton | 361 | 1 | 2280 | — | 8/1939 | — |
| Davenport | 44-ton | 362–366 | 5 | 2293–2297 | — | 4–5/1940 | — |
| Davenport | 44-ton | 372–376 | 5 | 2310–2314 | — | 8–10/1940 | — |
| Davenport | 44-ton | 377 | 1 | 2338 | — | 5/1942 | — |
| Whitcomb | 44-ton | 367–371 | 5 | 60023–60027 | — | 6–7/1940 | — |
| EMC | SW | 500–502 | 3 | 672–674 | — | 5/1937 | Rebuilt to SW900m 561, SW900 912, SW900m 558. |
| EMC | SW | 503–506 | 4 | 685, 676–678 | — | 5–6/1937 | Rebuilt to SW900 913, 902, 900, 909. |
| EMC | SW | 507–509 | 3 | 686–688 | — | 6/1937 | Rebuilt to SW900m 552, 554 and SW900 906. |
| EMC | SW | 510, 511 | 2 | 691, 660 | — | 8/1937, 3/1938 | Rebuilt to SW900 910 and SW900m 562. |
| EMC | SW | 512, 513 | 2 | 664, 665 | — | 3/1938 | Rebuilt to SW900 911 and 914. |
| EMC | SW | 514–516 | 3 | 706–708 | — | 3/1938 | Rebuilt to SW900m 560 (later 915), 550, and 556. |
| EMC | SW | 517 | 1 | 709 | — | 3/1938 | Rebuilt to SW900 901, later SW9m 780. |
| EMC | SW | 518, 519 | 2 | 716, 747 | — | 3/1938, 7/1938 | Rebuilt to SW900 908 and 903. |
| EMC | SW | 520 | 1 | 717 | — | 7/1938 | Rebuilt to SW900m 559. |
| EMC | SW | 521 | 1 | 719 | — | 7/1938 | Rebuilt to SW900 905. |
| EMC | SW | 522–526 | 5 | 720–724 | — | 7/1938 | The rebuild list is incomplete and includes 565, outside 550–563. |
| EMC | SW | 527, 528 | 2 | 733, 734 | — | 7/1938 | Rebuilt to SW900 904 and 907. |
| EMD | SW1 | 529–536 | 8 | 1678–1685 | — | 2–4/1942 | 532 later slug 998, dedicated to Silvis shop employees. |
| EMD | SW1 | 537–546 | 10 | 7473–7482 | — | 7/1949 | 544 later slug 999, named Pride of Armoudale. |
| Alco | S-1 | 598, 599 | 2 | 69497, 69498 | — | 7/1941 | Ex-Pullman Railroad 20, 21. |
| EMC | NW1 | 700, 701 | 2 | 778, 780 | — | 2/1938 | Repowered with Alco 244 engines. |
| EMC | NW1 | 702 | 1 | 828 | — | 8/1938 | — |
| EMC | NW1 | 703, 704 | 2 | 789, 790 | — | 7/1938 | — |
| EMC | NW1 | 705–707 | 3 | 825–827 | — | 8/1938 | Repowered with Alco 244 engines. |
| Alco | S-2 | 716–720 | 5 | 76191–76195 | — | 11/1948 | — |
| Alco | S-2 | 721–725 | 5 | 73597–73601 | — | 7/1945 | — |
| Alco | S-2 | 726–729 | 4 | 69901–69904 | — | 9–10/1942 | — |
| Alco | HH900 | 730 | 1 | 69058 | — | 2/1938 | Built as Alco demonstrator 101. |
| Alco | S-2 | 731, 732 | 2 | 74662, 74793 | — | 8/1946, 9/1946 | Ex-Toledo Terminal 101, 102. |
| Baldwin | S-12 | 758, 759 | 2 | 75935, 75936 | — | 6/1953 | Built as Baldwin demonstrators 1200, 1201. |
| Baldwin | VO1000 | 760, 761 | 2 | 70107, 70108 | — | 12/1943 | — |
| Baldwin | VO1000 | 762–764 | 3 | 70129–70131 | — | 1/1944 | — |
| EMD | NW2 | 765–774 | 10 | 6124–6133 | — | 12/1948–1/1949 | — |
| EMD | SW9 | 775–778 | 4 | 18731–18734 | — | 11/1953 | — |
| EMD | SW9 | 779 | 1 | 18964 | — | 11/1953 | — |
| EMD | NW2 | 795–797 | 3 | 3164–3166 | — | 3/1948 | Ex-NYO&W 111–113. |
| Davenport | 112-ton | 798, 799 | 2 | 3236, 3237 | — | 12/1950 | — |
| Lima-Hamilton | 800 hp | 800, 801 | 2 | 9448, 9449 | — | 9/1950 | — |
| Baldwin | S-8 | 802–806 | 5 | 75683–75687 | — | 9/1952 | — |
| EMD | SW8 | 811–813 | 3 | — | — | 9/1950 | Three units. 11696 is printed twice, and 11694 is not printed. |
| EMD | SW8 | 814–824 | 11 | 16609–16619 | — | 4–6/1952 | — |
| EMD | SW8 | 825–835 | 11 | 16623–16633 | — | 11/1952 | 16620–16622 are not in this group. |
| EMD | SW8 | 836–838 | 3 | 18865–18867 | — | 11/1953 | 838 later went to the Danbury Railway Museum, after Pfizer Chemical 1. |
| EMD | SW8 | 839, 840 | 2 | 18708, 18709 | — | 8/1953 | Ex-Wichita Falls & Southern 801, 802, via 801 (2nd) and 802 (2nd). |
| EMD | SW1200 | 920–928 | 9 | 30638–30646 | — | 9–10/1965 | — |
| EMD | SW1200 | 929–936 | 8 | 30743–30750 | — | 10/1965 | — |
| EMD | SW1500 | 940–949 | 10 | 31745–31754 | — | 7/1966 | Road numbers are printed out of serial order; the ten serials are continuous. |
| Whitcomb | 75-ton | 1000–1014 | 15 | 60814–60828 | — | 10–12/1950 | CLC 2411–2425. Ex-CN 7803–7817. |
| Whitcomb | 75-ton | 1015, 1016 | 2 | 60830, 60831 | — | 1/1949 and 11/1950 | Canadian Locomotive Company 2427 and 2428. Ex-Canadian National 7819 and 7820. 60829 was not used. |
| EMD | SW1 | 4800–4802 | 3 | 981, 983, 986 | — | 12/1939–1/1940 | Ex-IC 600, 602, 604, nee 9014, 9016, 9019. |
| EMD | SW1 | 4803, 4804 | 2 | 3292, 3293 | — | 6/1946 | Ex-IC 609, 610, nee 9024, 9025. |
| EMD | NW2 | 4900, 4901 | 2 | 5256, 5252 | — | 12/1947 | Ex-P&LE 8712, 8708. |
| EMD | NW2 | 4902, 4903 | 2 | 5254, 5257 | — | 12/1947 | Ex-P&LE 8710, 8713. |
| EMD | NW2 | 4904–4906 | 3 | 7418–7420 | — | 2/1949 | Ex-P&LE 8740–8742. |
| EMD | NW2 | 4907–4909 | 3 | 7425–7427 | — | 3/1949 | Ex-P&LE 8747–8749. |
| Builder | Model | Numbers | Qty | Serial | Order | Date | Notes |
|---|---|---|---|---|---|---|---|
| EMD | LWT-12 | 1 | 1 | 20826 | — | 1/1956 | Jet Rocket power. |
| EMD | LWT-12 | 2, 3 | 2 | 21464, 21463 | — | 12/1955, 8/1955 | Ex-EMD demonstrators 1001, 1000. |
| EMD | F2A | 38–49 | 12 | 2637–2648 | — | 7/1946 | Which end of 2637–2648 is 38 is not fixed. 41 was later a GP9m. |
| EMD | FTA | 70–73 | 4 | 3745–3751 odds | — | 11/1945 | — |
| EMD | FTA | 70A–73A | 4 | 3746–3752 evens | — | 11/1945 | Later 74–77. |
| EMD | FTA | 83–93 | 11 | — | — | 5–9/1944 | Six serials, 2392–2387, for these eleven numbers. |
| EMD | FTA | 94–99 | 6 | 1845–1840 | — | 4/1944 | Serials run high to low. |
| EMD | FTB | 70B | 1 | 3753 | — | 11/1945 | — |
| EMD | FTB | 71B–73B | 3 | 3755–3757 | — | 11/1945 | 3754 is not in this group. |
| EMD | FTB | 83A–93A | 11 | — | — | 5–9/1944 | Six serials, 2398–2393, for these eleven numbers. |
| EMD | FTB | 94A–99A | 6 | 1851–1846 | — | 4/1944 | 97B later GP9m 1331. |
| EMD | F7A | 100–109 | 10 | 6094–6112 evens | — | 5/1949 | — |
| EMD | F7A | 110–119 | 10 | 6095–6113 odds | — | 5/1949 | — |
| EMD | F7A | 120–123 | 4 | 12950–12956 evens | — | 5/1951 | 121 later GP18m 1238. |
| EMD | F7A | 124–127 | 4 | 12951–12957 odds | — | 5/1951 | — |
| EMD | F7B | 100B–109B | 10 | 6114–6123 | — | 5/1949 | Later 10–19. |
| EMD | F7B | 120B–123B | 4 | 12958–12961 | — | 5/1951 | Later 20–23. |
| Alco | FA-1 | 145–149 | 5 | 76015–76019 | — | 9/1948 | Rebuilt to FA-1m. |
| Alco | FA-1 | 150–160 | 11 | 76247–76257 | — | 9–10/1948 | Rebuilt to FA-1m. Production page matches. |
| Alco | FB-1 | 145B–152B | 8 | 76277–76284 | — | 9–10/1948 | Rebuilt to FB-1m 128B–135B, later 28B–35B. |
| EMC | TA | 601–606 | 6 | 735–740 | — | 8–10/1937 | — |
| EMD | E8B | 613 | 1 | 10786 | — | 8/1950 | Ex-UP 930B. |
| EMD | E8B | 614 | 1 | 17791 | — | 2/1953 | Ex-UP 931B. |
| EMD | E8B | 615 (2nd), 616 | 2 | 17796, 17797 | — | 2/1953 | Ex-UP 936B, 937B. |
| EMD | E8B | 617 (2nd), 618 | 2 | 17798, 17799 | — | 3/1953 | Ex-UP 938B, 939B. |
| EMD | E8B | 619, 620 | 2 | 18275, 18276 | — | 4/1953 | Ex-UP 946B, 947B. |
| Alco | DL109 | 621 | 1 | 69439 | — | 10/1941 | Repowered with an EMD engine. Named Christine. |
| Alco | DL107 | 622, 623 | 2 | 69336, 69398 | — | 11/1940, 12/1940 | — |
| Alco | DL103b | 624 | 1 | 69186 | — | 12/1939 | — |
| EMD | E3A | 625, 626 | 2 | 934, 935 | — | 6/1939, 7/1939 | — |
| EMD | E6A | 627 | 1 | 1063 | — | 6/1940 | Rebuilt as E8A 656 in 12/1953. Same frame. |
| EMD | E6A | 628, 629 | 2 | 1064, 1065 | — | 6/1940 | — |
| EMD | E6A | 630, 631 | 2 | 1424, 1425 | — | 10–11/1941 | 630 is at the Manly Junction Railroad Museum with 652. |
| EMD | E7A | 632–636 | 5 | 3094–3098 | — | 4–5/1946 | — |
| EMD | E7A | 637–642 | 6 | 3733–3738 | — | 9/1946–2/1948 | — |
| EMD | E7B | 632B | 1 | 3099 | — | 4/1946 | Later 602. |
| EMD | E7B | 633B, 634B | 2 | 3461, 3462 | — | 4–5/1946 | Later 603–604. |
| EMD | E7B | 637B–642B | 6 | 3739–3744 | — | 9/1946–2/1948 | Later 607–612. No 635B or 636B is listed. |
| EMD | E8A | 643 | 1 | 10306 | — | 8/1949 | Ex-EMD demonstrator 952. |
| EMD | E8A | 644–649 | 6 | 14276–14281 | — | 6–7/1951 | — |
| EMD | E8A | 650–655 | 6 | 15197–15202 | — | 2–3/1952 | 652 is at the Manly Junction Railroad Museum with 630. |
| EMD | E8A | 657 | 1 | 1966 | — | 6/1952 | Ex-Union Pacific 925, previously Chicago & North Western 5007B. |
| EMD | E8A | 658 | 1 | 10781 | — | 8/1950 | Ex-UP 930. |
| EMD | E8A | 659, 660 | 2 | 17787, 17789 | — | 4/1953 | Ex-UP 936, 937. |
| EMD | E8A | 661 | 1 | 18272 | — | 5/1953 | Ex-UP 941. |
| EMD | E9A | 662, 663 | 2 | 21261, 21262 | — | 5/1956 | Ex-UP 900, 901. |
| EMD | E9A | 664, 665 | 2 | 21264, 21266 | — | 1–2/1956 | Ex-UP 903, 905. |
| EMD | F7A | 675–677 | 3 | 6139–6141 | — | 3/1949 | — |
| EMD | F7B | 675B | 1 | 6142 | — | 3/1949 | Later 615 (1st), then 25. |
| EMD | F7B | 676B | 1 | 6143 | — | 3/1949 | Rebuilt as GP18m 1239. |
| EMD | F7B | 677B | 1 | 6144 | — | 3/1949 | Later 617 (1st), then 27. |
| EMD | AB6 | 750, 751 | 2 | 1066, 1067 | — | 6/1940 | E6B carbodies with one engine, a cab, and a steam generator. |
| EMD | F9Bm | 4100, 4101 | 2 | 6731, 4649 | — | 6/1958, 8/1958 | Ex-UP 509B, 517B. |
| EMD | F9Bm | 4102, 4103 | 2 | 6356, 6360 | — | 5/1958 | Ex-UP 520B, 522B. |
| EMD | F9Bm | 4104, 4105 | 2 | 4665, 6359 | — | 9/1958, 8/1958 | Ex-UP 523B, 524B. |
| EMD | F9Bm | 4106, 4107 | 2 | 6734, 6733 | — | 3/1959, 2/1959 | Ex-UP 531B, 532B. |
| EMD | F9Bm | 4108, 4109 | 2 | 6373, 6367 | — | 11/1958, 2/1959 | Ex-UP 536B, 539B. |
| EMD | F9Bm | 4110, 4111 | 2 | 6370, 6736 | — | 3/1959, 9/1958 | Ex-UP 540B, 542B. |
| EMD | F9Am | 4150, 4151 | 2 | 5718, 4611 | — | 5/1958 | Ex-UP 503, 507. |
| EMD | F9Am | 4152, 4153 | 2 | 6724, 6726 | — | 7/1958, 8/1958 | Ex-UP 513, 515. |
| EMD | F9Am | 4154, 4155 | 2 | 5719, 4616 | — | 8/1958 | Ex-UP 517, 518. |
| EMD | F9Am | 4156, 4157 | 2 | 5708, 4629 | — | 6/1958, 8/1958 | Ex-UP 519, 521. |
| EMD | F9Am | 4158, 4159 | 2 | 4621, 6332 | — | 8/1958, 9/1958 | Ex-UP 522, 524. |
| EMD | F9Am | 4160, 4161 | 2 | 5716, 4645 | — | 1/1959 | Ex-UP 528, 529. |
| EMD | F9Am | 4162, 4163 | 2 | 6335, 6720 | — | 11/1958, 3/1959 | Ex-UP 531, 533. |
| EMD | F9Am | 4164 | 1 | 4620 | — | 1/1959 | Ex-UP 534. |
| EMD | F9Am | 4165, 4166 | 2 | 6715, 6723 | — | 12/1958, 2/1959 | Ex-UP 535, 536. |
| EMD | F9Am | 4167, 4168 | 2 | 6728, 4617 | — | 9/1958, 11/1958 | Ex-UP 538, 539. |
| EMD | FP7 | 402–411 | 10 | 8623–8632 | — | 6–7/1949 | Cab unit. |
The FA-1m numbers, same sixteen cabs, were 128–133 from 155, 153, 148, 149, 158, and 151; 134–139 from 156, 146, 152, 154, 150, and 157; and 140–143 from 145, 160, 147, and 159. The FB-1m numbers were 128B–131B from 147B, 152B, 148B, and 146B, later 28B–31B, and 132B–135B from 149B, 151B, 145B, and 150B, later 32B–35B.
Rock Island U25B #225 is seen here at Blue Island, Illinois soon after it was delivered on September 12, 1965. After the Rock's liquidation this U-boat was acquired by Maine Central. Photographer unknown.
| Builder | Model | Numbers | Qty | Serial | Order | Date | Notes |
|---|---|---|---|---|---|---|---|
| GE | U33B | 190–199 | 10 | 37128–37137 | — | 5/1969 | — |
| GE | U33B | 285–289 | 5 | 36969–36973 | — | 1/1969 | — |
| GE | U33B | 290–299 | 10 | 36822–36831 | — | 7–9/1968 | — |
| GE | U25B | 200–205 | 6 | 34707–34712 | — | 5/1963 | 201 and 203 became slugs 54 and 50. 50 later 53. |
| GE | U25B | 206–211 | 6 | 34718–34723 | — | 9–10/1963 | 210 became slug 55. |
| GE | U25B | 212–224 | 13 | 35111–35123 | — | 4–6/1964 | 212 and 221 wrecked into U28B 254 and 261. 222 became slug 284. |
| GE | U25B | 225–238 | 14 | 35701–35714 | — | 9–10/1965 | To Maine Central 225–238. |
| GE | U28B | 240–249 | 10 | 35906–35915 | — | 3/1966 | — |
| GE | U28B | 250–253 | 4 | 36003–36006 | — | 5/1966 | — |
| GE | U28B | 254 | 1 | 36078 | — | 10/1966 | New serial. Rebuilt from wrecked U25B 212. |
| GE | U28B | 255–260 | 6 | 36007–36012 | — | 6–8/1966 | — |
| GE | U28B | 261 | 1 | 36013 | — | 8/1966 | New serial. Rebuilt from wrecked U25B 221. |
| GE | U28B | 262–281 | 20 | 36156–36175 | — | 10–12/1966 | To UP 500 (2nd)–519 (2nd). |
| EMD | GP35 | 300–314 | 15 | 30029–30043 | — | 4–6/1965 | 306 and 310 wrecked; GP40 360–361 have new serials. |
| EMD | GP35 | 315–319 | 5 | 30300–30304 | — | 6/1965 | — |
| EMD | GP35 | 320–324 | 5 | 30690–30694 | — | 7/1965 | — |
| EMD | GP35 | 325–333 | 9 | 30647–30655 | — | 7–8/1965 | — |
| EMD | GP40 | 340–359 | 20 | 32232–32251 | — | 9–10/1966 | To UP 600 (2nd)–619 (2nd). |
| EMD | GP40 | 360, 361 | 2 | 32292, 32293 | — | 9/1966 | New serials. Rebuilt from wrecked GP35s 306 and 310. |
| EMD | GP40 | 362–373 | 12 | 32588–32599 | — | 12/1966–1/1967 | — |
| EMD | GP40 | 374–381 | 8 | 32600–32607 | — | 1/1967 | GP40-2 3000–3004 completed. 3005 and 3006 marked incomplete. 378 not rebuilt. |
| EMD | GP40 | 382–393 | 12 | 34763–34774 | — | 1/1969 | — |
| EMD | GP40 | 394–396 | 3 | 34868–34870 | — | 1/1969 | — |
| FM | H15-44 | 400, 401 | 2 | 15L12, 15L13 | — | 12/1948 | Repowered with EMD engines. |
| Alco | C415 | 415–424 | 10 | 3451-01 to 3451-10 | — | 9/1966, 11/1966 | Prefix is inside the serial. No separate order is printed. |
| EMD | BL2 | 425–429 | 5 | 6134–6138 | — | 12/1948–1/1949 | — |
| EMD | GP7 | 430–441 | 12 | 11682–11693 | — | 7–8/1950 | Later GP7R numbers. Same frames. |
| Alco | RS2 | 450–454 | 5 | 75952–75956 | — | 9–10/1948 | Repowered with EMD engines. |
| Alco | RS3 | 455–462 | 8 | 78253–78260 | — | 9/1950 | — |
| Alco | RS3 | 463 | 1 | 78261 | — | 9/1950 | Renumbered 475 after a wreck rebuild. |
| Alco | RS3 | 464–467 | 4 | 78262–78265 | — | 9/1950 | — |
| Alco | RS3 | 468, 469 | 2 | 78290, 78291 | — | 9/1950 | — |
| Alco | RS3 | 470–472 | 3 | 79058–79060 | — | 8/1951 | — |
| Alco | RS3 | 473, 474 | 2 | 79062, 79063 | — | 8/1951 | 79061 is not in this group. |
| Alco | RS3 | 485–499 | 15 | 79261–79275 | — | 10–11/1951 | 476–484 were not used. |
| Alco | RS1 | 735–739 | 5 | 71312–71316 | — | 1–2/1944 | — |
| Alco | RS1 | 740, 741 | 2 | 70823, 70824 | — | 11/1943 | — |
| Alco | RS1 | 742–745 | 4 | 70816–70819 | — | 5/1943 | — |
| Alco | RS1 | 746, 747 | 2 | 69569, 69570 | — | 8/1941 | To the Army as RSD-1s 8007 and 8004. No new serial. |
| Alco | RS1 | 748, 749 | 2 | 69424, 69425 | — | 3/1941 | To the Army as RSD-1s 8005 and 8006. No new serial. |
| EMD | GP7 | 1200–1211 | 12 | 14396–14407 | — | 6–7/1951 | — |
| EMD | GP7 | 1212 | 1 | 14506 | — | 7/1951 | Later GP7R 4438. |
| EMD | GP7 | 1213–1237 | 25 | 15172–15196 | — | 9–12/1951 | — |
| EMD | GP18m | 1238 | 1 | 28631 | — | 10/1963 | New serial. Rebuilt from wrecked F7A 121. Later 4423. |
| EMD | GP18m | 1239 | 1 | 28632 | — | 10/1963 | New serial. Rebuilt from wrecked F7B 676B. Later 4421. |
| EMD | GP7 | 1250–1262 | 13 | 16459–16471 | — | 7/1952 | Includes 1256, later GP18m and GP7R 4422. |
| EMD | GP7 | 1263–1292 | 30 | 17594–17623 | — | 10–12/1952 | 1288–1292 had steam generators. 1275 later GP9R 4424. |
| EMD | GP7 | 1293 | 1 | 18311 | — | 5/1953 | Later GP7R 4555. |
| EMD | GP7 | 1294–1298 | 5 | 18726–18730 | — | 10/1953 | Built with steam generators. |
| EMD | GP7 | 1299 | 1 | 18864 | — | 10/1953 | Steam generator. Later GP7R 4467. |
| EMD | GP7 | 1300–1311 | 12 | 16447–16458 | — | 3–5/1952 | Steam generator later added to 1308. |
| EMD | GP9 | 1312–1321 | 10 | 22798–22807 | — | 5/1957 | — |
| EMD | GP9 | 1323–1330 | 8 | 25213–25220 | — | 4/1959 | — |
| EMD | GP9 | 1332 | 1 | 25356 | — | 4/1959 | Serial 25356. A conflicting note assigns 23643, the F2A 41 serial, to a GP9m numbered 1332. |
| EMD | GP18 | 1333–1339 | 7 | 25450–25456 | — | 1–2/1960 | — |
| EMD | GP18 | 1340–1342 | 3 | 25457–25459 | — | 2/1960 | — |
| EMD | GP18 | 1343 | 1 | 25683 | — | 2/1960 | — |
| EMD | GP18 | 1344–1353 | 10 | 26933–26942 | — | 10/1961 | — |
| EMD | GP7 | 4200–4202 | 3 | 11425–11427 | — | 10/1950 | Ex-D&RGW 5101–5103. |
| EMD | GP7 | 4203 | 1 | 14430 | — | 6/1952 | Ex-Denver & Rio Grande Western 5105. That railroad dates the group October 1950. |
| EMD | GP7 | 4204, 4205 | 2 | 14431, 14432 | — | 6/1952 | Ex-Denver & Rio Grande Western 5106 and 5107. That railroad dates the group October 1950. Serials 14429 and 14433 are not assigned. |
| EMD | GP7 | 4206, 4207 | 2 | 16544, 16545 | — | 6/1952 | Ex-Denver & Rio Grande Western 5110 and 5111. |
| EMD | GP7 | 4208, 4209 | 2 | 16546, 16547 | — | 6/1952 | Ex-D&RGW 5112, 5113. |
| EMD | GP38-2 | 4300–4314 | 15 | 756136-1 to 756136-15 | 756136 | 8–9/1976 | — |
| EMD | GP38-2 | 4315–4332 | 18 | 757136-1 to 757136-18 | 757136 | 9–10/1976 | — |
| EMD | GP38-2 | 4333–4351 | 19 | 757136-19 to 757136-37 | 757136 | 11/1976 | — |
| EMD | GP38-2 | 4352–4355 | 4 | 757136-38 to 757136-41 | 757136 | 9–11/1976 | 4356–4367 were not used. |
| EMD | GP38-2 | 4368–4371 | 4 | 786157-1 to 786157-4 | 786157 | 11/1978 | — |
| EMD | GP38-2 | 4372–4379 | 8 | 786157-5 to 786157-12 | 786157 | 11/1978 | — |
| EMD | GP7R | 4429, 4430 | 2 | — | — | — | Ex-UP GP9 144, 140. Serials were not printed. |
| EMD | GP7R | 4471, 4472 | 2 | — | — | — | Ex-N&W 3476, 3480, nee Wabash 476, 480. |
| EMD | GP7R | 4475 | 1 | — | — | — | Ex-N&W 2412, nee NKP 412. |
| EMD | GP7R | 4476, 4477 | 2 | — | — | — | Ex-Frisco 547, 557. |
| EMD | GP7R | 4478 | 1 | — | — | — | Ex-Precision National 1504, ex-N&W 3471, nee Wabash 471. |
| GE | U30C | 4582–4599 | 18 | 39479–39496 | — | 10–12/1973 | — |
| EMD | GP40 | 4700–4719 | 20 | 36386–36405 | — | 3–4/1970 | To UP 631 (2nd)–650 (2nd). |
| EMD | SD40-2 | 4790–4799 | 10 | 73676-1 to 73676-10 | 73676 | 12/1973 | — |
| Builder | Model | Numbers | Qty | Serial | Order | Date | Notes |
|---|---|---|---|---|---|---|---|
| — | Slug | 282 | 1 | — | — | — | Ex-SCL U33B 1719. |
| — | Slug | 283 | 1 | — | — | — | Ex-UP U25B 632. |
| Budd | RDC-3 | 9000–9004 | 5 | — | — | — | — |
| Alco-GE | Bi-power boxcab | 10000 | 1 | Alco 68399; GE 11232 | — | 4/1930 | One locomotive. First Rock Island diesel. |
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