Union Pacific Railroad
Timeline of Motive Power, 1934-1982
This page was last updated on December 14, 2005.
(Return to UP Steam Roster Index Page)
(Return to UP Diesel Roster Index Page)
(Note: UP's diesel era began with the delivery of the M-10000, a distillate powered articulated Streamliner train, and M-10001, a diesel powered articulated Streamliner train, in May and June 1934.)
1934
(1,507 total steam on 1 January 1934)
(0 total diesel on 1 January 1934)
Steam
(No purchases)
| Retired (42) | 7 | 0-6-0 | UP 4350, 4357, 4374, 4397, 4406, 4418, 4735 |
| 16 | 2-8-0 | UP 120, 150, 154, 209, 225, 232, 277, 300, 303, 426, 435, 499, 746, 6013, 6015, 6040 | |
| 4 | 4-6-0 | UP 1261, 1366, 1743, 1744 | |
| 15 | 4-6-2 | UP 2809, 2818, 3106, 3107, 3150, 3151, 3152, 3153, 3157, 3158, 3163, 3166, 3167, 3168, 3170 |
Diesel
| Added (2) | 2 | Streamliner | UP M-10000, M-10001 |
1935
(1,465 total steam on 1 January 1935)
(2 total diesel on 1 January 1935)
(No purchases)
(No retirements)
1936
(1,465 total steam on 1 January 1936)
(2 total diesel on 1 January 1936)
(Operations of UP, OSL, O-WR&N, StJ&GI, and LA&SL consolidated on January 1, 1936)
Steam
| Added (19) | 4 | 4-6-0 | OSL 1584-1587 (purchased secondhand from P&IN) |
| 15 | 4-6-6-4 | UP 3900-3914 (renumbered to UP 3800-3814 in 1944) | |
| Retired (35) | 9 | 0-6-0 | 4236, 4355, 4356, 4366, 4386, 4396, 4403, 4908, 4930 |
| 9 | 2-8-0 | 107, 204, 222, 288, 468, 473, 6066, 6076, 6077 | |
| 1 | 4-4-0 | 947 | |
| 6 | 4-6-0 | 1239, 1251, 1273, 1322, 1530, 1556 | |
| 10 | 4-6-2 | 2800, 2812, 2820, 2826, 2832, 2842, 3200, 3201, 3209, 3214 |
Diesel
| Added (5) | 5 | Streamliner | UP M-10002 to M-10006 |
1937
(1,449 total steam on 1 January 1937)
(7 total diesel on 1 January 1937)
Steam
| Added (45) | 20 | 4-8-4 | UP 800-819 |
| 25 | 4-6-6-4 | UP 3915-3939 (renumbered to UP 3815-3839 in 1944) | |
| Retired (14) | 4 | 0-6-0 | UP 4408, 4755, 4757, 4911 |
| 5 | 2-8-0 | UP 218, 281, 307, 318, 333 | |
| 2 | 4-6-0 | UP 1258, 1260 | |
| 3 | 4-6-2 | UP 2815, 2828, 2846 |
Diesel
| Added (6) | 2 | E2A | City of Los Angeles LA-1, City of San Francisco SF-1 |
| 4 | E2B | City of Los Angeles LA-2, LA-3, City of San Francisco SF-2, SF-3 |
1938
(1,480 total steam on 1 January 1938)
(13 total diesel on 1 January 1938)
Steam
(No purchases)
| Retired (6) | 6 | 2-8-0 | 240, 292, 311, 404, 431, 700 |
Diesel
(No purchases)
1939
(1,474 total steam on 1 January 1939)
(13 total diesel on 1 January 1939)
Steam
| Added (15) | 15 | 4-8-4 | UP 820-834 |
| Retired (3) | 3 | 2-8-0 | UP 6006, 6020, 6056 |
Diesel
| Added (2) | 1 | E3A | City of Los Angeles LA-5 |
| 1 | E3B | City of Los Angeles LA-6 | |
| 3 | Streamliner booster | CD-05C, CD-06-C, CD-07-C | |
| Operated | 2 | Steam Turbine | UP 1, 2 (in service, April to June 1939) |
| 1 | NW2 | EMC 889 (EMC demonstrator) (in service, October 1939 to March 1940) | |
| 1 | SW1 | EMC 911 (EMC demonstrator) (in service, October 1939 to March 1940) | |
| Retired | 1 | Streamliner | UP M-10001 |
| 1 | Streamliner | UP LA-4 (ex M-10004) |
1940
(1,486 total steam on 1 January 1940)
(16 total diesel on 1 January 1940)
Steam
(No purchases)
| Retired (46) | 3 | 0-6-0 | UP 4237, 4931, 4933 |
| 26 | 2-8-0 | UP 119, 257, 265, 289, 412, 413, 429, 439, 447, 452, 453, 457, 462, 464, 467, 474, 483, 706, 728, 755, 767, 6005, 6019, 6024, 6069, 6081 | |
| 9 | 4-6-0 | UP 1583, 1735, 1742, 1749, 1750, 1752, 1753, 1756, 1758 | |
| 8 | 4-6-2 | UP 2802, 2803, 2823, 2827, 2830, 2850, 3210, 3216 |
Diesel
| Added (21) | 6 | E6A | UP 7-M-1A,2A, 8-M-1A,2A, 9-M-1A,2A |
| 15 | NW2 | UP 1000-1014 (including EMC 889 demonstrator) |
1941
(1,440 total steam on 1 January 1941)
(37 total diesel on 1 January 1941)
Steam
| Added (20) | 20 | 4-8-8-4 | UP 4000-4019 |
Diesel
| Added (18) | 2 | E6A | City of Los Angeles LA-4, City of San Francisco SF-4 |
| 4 | E6B | City of Los Angeles LA-5, LA-6, City of San Francisco SF-5, SF-6 | |
| 12 | NW2 | UP 1015-1026 | |
| Retired | 1 | Streamliner | UP M-10000 |
1942
(1,460 total steam on 1 January 1942)
(54 total diesel on 1 January 1942)
Steam
| Added (20) | 20 | 4-6-6-4 | UP 3950-3969 |
| Rebuilt (10) | 10 | 4-10-2 | LA&SL 8800-8809 rebuilt from three-cylinder to two-cylinder; renumbered to LA&SL 5090-5099 |
| Retired (3) | 2 | 0-6-0 | UP 4902, 4904 |
| 1 | 4-6-0 | UP 1716 |
Diesel
| Added (9) | 9 | NW2 | UP 1027-1035 |
1943
(1,477 total steam on 1 January 1943)
(63 total diesel on 1 January 1943)
Steam
| Added (25) | 25 | 4-6-6-4 | UP 3975-3999 |
| Retired (2) | 2 | 0-6-0 | UP 4903, 4906 |
Diesel
| Added (17) | 13 | S-2 | UP 1036-1048 |
| 4 | VO-1000 | UP 1057-1060 |
1944
(1,500 total steam on 1 January 1944)
(80 total diesel on 1 January 1944)
Steam
| Added (35) | 10 | 4-8-4 | UP 835-844 |
| 20 | 4-6-6-4 | UP 3930-3949 | |
| 5 | 4-8-8-4 | UP 4020-4024 |
Diesel
| Added (8) | 6 | S-2 | UP 1049-1054 |
| 2 | VO-1000 | UP 1055, 1056 |
1945
(1,535 total steam on 1 January 1945)
(88 total diesel on 1 January 1945)
Steam
| Added (35) | 30 | 2-8-8-2 | UP 3570-3599 (purchased secondhand from C&O) |
| 5 | 2-8-8-2 | UP 3670-3674 (purchased secondhand from N&W) | |
| Retired (4) | 2 | 0-6-0 | UP 4226, 4907 |
| 2 | 4-6-0 | UP 1733, 1737 |
(No steam locomotive purchases after 1945)
Diesel
| Added (37) | 33 | S-2 | UP 1119-1151 |
| 2 | Erie A | UP 50-M-1A,2A | |
| 1 | Erie B | UP 50-M-3B | |
| 1 | H10-44 | UP 1300 |
1946
(1,566 total steam on 1 January 1946)
(125 total diesel on 1 January 1946)
Steam
| Retired (67) | 10 | 0-6-0 | 4242, 4243, 4419, 4600, 4707, 4731, 4740, 4749, 4916, 4929 |
| 35 | 2-8-0 | 155, 158, 213, 216, 231, 245, 268, 271, 274, 285, 286, 290, 291, 299, 301, 304, 305, 310, 312, 313, 329, 350, 352, 405, 408, 436, 443, 455, 458, 487, 536, 584, 707, 710, 6014 | |
| 4 | 2-8-2 | 2102, 2523, 2536, 2538 | |
| 1 | 2-8-8-2 | 3597 | |
| 8 | 4-6-0 | 1584, 1587, 1715, 1731, 1734, 1738, 1739, 1760 | |
| 9 | 4-6-2 | 2819, 2829, 2854, 2855, 2857, 2858, 2859, 3108, 3213 |
Diesel
| Added (30) | 15 | NW2 | UP 1036-1050 |
| 6 | E7A | UP 907A, 927A, 930A, 931A, 959A, 960A | |
| 7 | E7B | UP 908B, 909B, 928B, 929B, 961B, 962B, 963B | |
| 2 | S-2 | UP 1152, 1153 | |
| Retired | 1 | Streamliner | UP M-10002 |
1947
(1,499 total steam on 1 January 1947)
(154 total diesel on 1 January 1947)
Steam
| Retired (334) | 49 | 0-6-0 | 4230, 4233, 4234, 4235, 4238, 4239, 4240, 4241, 4405, 4411, 4413, 4415, 4416, 4426, 4427, 4430, 4431, 4432, 4438, 4440, 4445, 4450, 4452, 4454, 4458, 4463, 4465, 4469, 4470, 4472, 4473, 4476, 4601, 4606, 4608, 4609, 4703, 4736, 4741, 4742, 4743, 4744, 4748, 4750, 4751, 4756, 4912, 4913, 4915 |
| 1 | 2-10-2 | 5045 | |
| 92 | 2-8-0 | 202, 203, 207, 208, 211, 214, 220, 223, 224, 227, 228, 229, 230, 233, 234, 238, 239, 241, 242, 244, 249, 251, 252, 258, 262, 266, 269, 276, 279, 282, 295, 296, 298, 302, 308, 320, 321, 326, 330, 401, 422, 425, 427, 442, 446, 456, 459, 469, 470, 479, 493, 518, 524, 528, 534, 565, 566, 579, 581, 585, 588, 590, 594, 598, 599, 610, 614, 620, 621, 705, 718, 719, 721, 738, 741, 747, 753, 756, 759, 766, 6001, 6002, 6008, 6010, 6012, 6023, 6029, 6030, 6049, 6057, 6061, 6075 | |
| 82 | 2-8-2 | 1900, 1904, 1907, 1909, 1910, 1913, 1915, 1917, 1921, 1926, 1929, 1931, 1936, 1939, 2000, 2004, 2011, 2012, 2018, 2022, 2024, 2028, 2029, 2031, 2032, 2101, 2107, 2110, 2123, 2127, 2128, 2129, 2130, 2131, 2132, 2136, 2139, 2142, 2143, 2144, 2146, 2149, 2153, 2155, 2162, 2163, 2166, 2169, 2200, 2227, 2234, 2237, 2238, 2239, 2240, 2247, 2255, 2256, 2260, 2261, 2271, 2274, 2284, 2293, 2296, 2299, 2300, 2301, 2313, 2319, 2508, 2512, 2518, 2522, 2530, 2563, 2700, 2705, 2706, 2708, 2712, 2732 | |
| 7 | 2-8-8-0 | 3505, 3509, 3511, 3517, 3525, 3527, 3557 | |
| 33 | 2-8-8-2 | UP 3570-3596, 3599, 3670-3674 | |
| 11 | 4-6-0 | 1573, 1578, 1580, 1585, 1586, 1745, 1748, 1754, 1755, 1757, 1759 | |
| 59 | 4-6-2 | 2824, 2835, 2844, 2852, 2853, 2861, 2862, 2871, 2872, 2875, 2876, 2877, 2879, 2880, 2882, 2883, 2884, 2885, 2886, 2887, 2891, 2892, 2893, 2895, 2896, 2898, 2900, 2901, 2902, 2903, 2904, 2905, 3100, 3104, 3105, 3109, 3110, 3111, 3113, 3115, 3117, 3118, 3120, 3125, 3126, 3127, 3128, 3132, 3133, 3176, 3179, 3180, 3181, 3204, 3205, 3212, 3218, 3220, 3224 |
Diesel
| Added (128) | 25 | NW2 | UP 1051-1075 |
| 1 | GE 44 ton | UP 1399 | |
| 2 | Erie A | UP 984A, 985A | |
| 2 | Erie B | UP 986B,. 987B | |
| 4 | H10-44 | UP 1301-1304 | |
| 11 | H20-44 | UP 1360-1370 | |
| 4 | PA-1 | UP 994A-997A | |
| 2 | PB-1 | UP 998B, 999B | |
| 1 | RS-2 | UP 1191 | |
| 1 | RSC-2 | UP 1190 (former Alco demonstrator) | |
| 5 | F3A passenger | UP 964A-968A | |
| 10 | F3B passenger | UP 969B-978B | |
| 10 | F3A freight | UP 1400A-1409A | |
| 10 | F3B freight | UP 1442B-1451B | |
| 24 | FA-1 | UP 1500A-1523A | |
| 16 | FB-1 | UP 1524B-1541B |
1948
(1,165 total steam on 1 January 1948)
(282 total diesel on 1 January 1948)
Steam
| Retired (90) | 5 | 0-6-0 | 4421, 4428, 4435, 4443, 4457 |
| 2 | 2-10-2 | 5000, 5070 | |
| 27 | 2-8-0 | 217, 235, 250, 253, 309, 351, 353, 417, 475, 529, 562, 568, 577, 592, 605, 612, 619, 731, 732, 735, 6003, 6022, 6031, 6039, 6059, 6067, 6085 | |
| 34 | 2-8-2 | 1901, 1903, 1906, 1908, 1911, 1918, 1920, 2007, 2008, 2009, 2113, 2135, 2154, 2156, 2158, 2212, 2216, 2222, 2229, 2232, 2248, 2249, 2273, 2276, 2303, 2308, 2513, 2531, 2532, 2542, 2707, 2727, 2729, 2735 | |
| 4 | 2-8-8-0 | 3503, 3507, 3515, 3547 | |
| 2 | 4-10-2 | 5094, 5096 | |
| 1 | 4-12-2 | 9018 | |
| 6 | 4-6-0 | 1577, 1579, 1730, 1740, 1741, 1747 | |
| 9 | 4-6-2 | 2873, 2878, 2881, 2890, 2909, 3116, 3123, 3177, 3208 |
Diesel
| Added (232) | 5 | DS-4-4-10 | UP 1206-1210 |
| 1 | DRS-6-4-15 | UP 1250 (former Baldwin demonstrator) | |
| 20 | NW2 | UP 1076-1095 | |
| 5 | H15-44 | UP 1325-1329 | |
| 4 | Erie A | UP 704-707 | |
| 2 | Erie B | UP 704B, 706B | |
| 10 | RSC-2 | UP 1180-1189 | |
| 3 | RS-2 | UP 1192-1194 | |
| 6 | F3A passenger | UP 905-910 | |
| 6 | F3B passenger | UP 905B, 905C, 907B, 907C, 909B, 909C | |
| 64 | F3A freight | UP 1410A-1423A, 1424-1463, 1550-1559 | |
| 58 | F3B freight | UP 1452B-1465B, 1424B,C-1438B,C (even numbers only), 1442B,C-1458B,C (even numbers only) | |
| 20 | FA-1 | UP 1542A, 1543A, 1627-1643 | |
| 28 | FB-1 | UP 1540B, 1541B, 1618B,C-1642B,C (even numbers only) | |
| Retired (6) | 1 | E2A | UP 983J (sold to SP) |
| 1 | E2A | UP 984J (sold to C&NW) | |
| 1 | E6A | UP 985J (sold to C&NW) | |
| 1 | E7A | UP 988J (sold to C&NW) | |
| 2 | E7B | UP 986BJ, 986CJ (sold to SP) |
1949
(1,075 total steam on 1 January 1949)
(508 total diesel on 1 January 1949)
Steam
| Retired (57) | 3 | 0-6-0 | 4441, 4453, 4455 |
| 8 | 2-10-2 | 5001, 5500, 5505, 5506, 5510, 5520, 5521, 5523 | |
| 10 | 2-8-0 | 113, 117, 247, 255, 306, 315, 317, 420, 595, 611 | |
| 14 | 2-8-2 | 1927, 1928, 1940, 2017, 2020, 2027, 2118, 2152, 2205, 2291, 2311, 2506, 2526, 2553 | |
| 15 | 2-8-8-0 | 3510, 3513, 3516, 3526, 3531, 3532, 3537, 3546, 3548, 3549, 3551, 3554, 3562, 3564, 3565 | |
| 2 | 4-10-2 | 5098, 5099 | |
| 1 | 4-6-0 | 1751 | |
| 3 | 4-6-2 | 2874, 2907, 3178 | |
| 1 | 4-8-2 | 7009 |
Diesel/GTEL
| Added (20) | 1 | 4500 GTEL | UP 50 |
| 4 | PA-1 | UP 604-607 | |
| 4 | PB-1 | UP 604B, 605B, 606B | |
| 1 | RS-2 | UP 1195 | |
| 4 | F3A freight | UP 1560-1563 | |
| 6 | F3B freight | UP 1440B,C, 1560B,C, 1562B,C | |
| Retired (2) | 1 | F3A | UP 1435 (wrecked) |
| 1 | F3B | UP 1422C (wrecked) |
1950
(1,018 total steam on 1 January 1950)
(526 total diesel/GTEL on 1 January 1950)
Steam
| Retired (21) | 1 | 0-6-0 | 4423 |
| 5 | 2-10-2 | 5003, 5076, 5306, 5308, 5504 | |
| 2 | 2-8-0 | 495, 591 | |
| 2 | 2-8-2 | 2305, 2527 | |
| 4 | 2-8-8-0 | 3545, 3556, 3560, 3569 | |
| 5 | 4-6-2 | 2864, 3114, 3119, 3121, 3225 | |
| 2 | 4-8-2 | 7011, 7860 |
Diesel/GTEL
| Added (39) | 3 | H16-44 | UP 1340-1342 |
| 1 | E7A | UP 988 (former EMD demonstrator) | |
| 5 | E8A | UP 926-930 | |
| 5 | E8B | UP 926B-930B | |
| 25 | SW7 | UP 1800-1824 |
(plus two 25 ton Whitcomb locomotives for tie treatment plants)
1951
(997 total steam on 1 January 1951)
(565 total diesel/GTEL on 1 January 1950)
(Merged with Laramie, North Park & Pacific, December 1951)
Steam
| Retired (11) | 6 | 2-8-0 | 105, 403, 523, 563, 570, 607 |
| 1 | 2-8-2 | 2103 | |
| 1 | 4-6-0 | 1575 | |
| 3 | 4-6-2 | 2906, 3215, 7001 |
Diesel/GTEL
| Added (61) | 8 | TR5 | UP 1870-1877 |
| 8 | TR5B | UP 1870B-1877B | |
| 15 | F7A | UP 1466-1480 | |
| 30 | F7B | UP 1466B,C-1494B,C (even numbers only) | |
| Retired (5) | 1 | 4500 GTEL | UP 50 |
| 2 | F3A | UP 1504, 1553 (wrecked) | |
| 2 | F3B | UP 1530B, 1558C (wrecked) |
1952
(986 total steam on 1 January 1952)
(621 total diesel/GTEL on 1 January 1952)
Steam
| Retired (38) | 3 | 0-6-0 | 4425, 4468, 4754 |
| 7 | 2-10-2 | 5004, 5017, 5026, 5048, 5059, 5305, 5317 | |
| 2 | 2-8-0 | 476, 6043 | |
| 3 | 2-8-2 | 2003, 2015, 2507 | |
| 11 | 2-8-8-0 | 3508, 3514, 3522, 3529, 3535, 3536, 3539, 3542, 3550, 3555, 3561 | |
| 9 | 4-6-2 | 2851, 2856, 2863, 2865, 2866, 2867, 2868, 2869, 3129 | |
| 3 | 4-8-2 | 7005, 7007, 7026 |
Diesel/GTEL
| Added (25) | 6 | 4500 GTEL | UP 51-56 |
| 1 | E8A | UP 925 | |
| 6 | AS-616 | UP 1260-1265 | |
| 2 | FP7 | UP 1498, 1499 (as UP 911, 912) | |
| 2 | F7B passenger | UP 1498B, 1498C (as UP 910B, 910C) | |
| 2 | F7A | UP 1481, 1482 (former EMD demonstrators) | |
| 2 | F7B | UP 1496B, 1496C (former EMD demonstrators) | |
| 2 | F7A | UP 1464, 1465 (rebuilt from wrecked F3As) | |
| 2 | F7B | UP 1464B, 1464C (rebuilt from wrecked F3Bs) |
1953
(948 total steam on 1 January 1953)
(646 total diesel/GTEL on 1 January 1953)
Steam
| Retired (69) | 12 | 0-6-0 | 4414, 4433, 4444, 4451, 4460, 4603, 4607, 4917, 4919, 4920, 4921, 4923 |
| 2 | 2-10-2 | 5015, 5040 | |
| 10 | 2-8-0 | 248, 254, 322, 328, 411, 434, 451, 478, 539, 761 | |
| 26 | 2-8-2 | 1916, 1925, 1935, 1941, 1944, 2034, 2119, 2122, 2124, 2137, 2141, 2160, 2221, 2226, 2231, 2265, 2269, 2297, 2304, 2481, 2490, 2493, 2535, 2543, 2554, 2734 | |
| 1 | 2-8-8-0 | 3559 | |
| 1 | 4-10-2 | 5095 | |
| 6 | 4-12-2 | 9002, 9008, 9025, 9034, 9056, 9081 | |
| 5 | 4-6-2 | 2870, 2899, 2910, 2911, 3122 | |
| 6 | 4-8-2 | 7004, 7024, 7030, 7037, 7861, 7867 |
Diesel/GTEL
| Added (122) | 4 | 4500 GTEL | UP 57-60 |
| 12 | E8A | UP 931-942 | |
| 23 | E8B | UP 922B-925B, 931B-949B | |
| 1 | F7A | UP 1483 (former EMD demonstrator) | |
| 30 | GP7 | UP 700-729 (renumbered to UP 100-129) | |
| 10 | SD7 | UP 775-784 (renumbered to UP 450-459) | |
| 42 | SW9 | UP 1825-1866 | |
| Retired (10) | 3 | Streamliners | City of Denver CD-05, CD-06, CD-07 |
| 3 | Streamliner booster | CD-05-C, CD-06-C, CD-07-C | |
| 4 | E2B | UP 983B, 983C, 984B, 984C |
1954
(879 total steam on 1 January 1954)
(758 total diesel/GTEL on 1 January 1954)
Steam
| Retired (258) | 15 | 0-6-0 | 4412, 4417, 4424, 4434, 4456, 4464, 4467, 4478, 4479, 4480, 4602, 4604, 4752, 4914, 4922 |
| 39 | 2-10-2 | 5005, 5016, 5018, 5019, 5021, 5022, 5023, 5025, 5027, 5029, 5031, 5032, 5038, 5039, 5042, 5043, 5046, 5054, 5055, 5058, 5061, 5062, 5066, 5068, 5075, 5077, 5081, 5082, 5084, 5086, 5302, 5312, 5400, 5403, 5407, 5507, 5508, 5526, 5527 | |
| 38 | 2-8-0 | 219, 221, 236, 243, 256, 267, 283, 319, 356, 400, 402, 410, 415, 418, 438, 441, 445, 449, 463, 472, 498, 525, 527, 573, 580, 582, 600, 736, 742, 760, 6051, 6219, 6221, 6236, 6243, 6256, 6267, 6283 | |
| 69 | 2-8-2 | 1902, 1914, 1922, 1923, 1943, 1946, 1947, 1949, 2002, 2010, 2014, 2016, 2019, 2021, 2023, 2025, 2026, 2033, 2106, 2111, 2114, 2126, 2134, 2138, 2140, 2147, 2150, 2165, 2170, 2202, 2203, 2211, 2213, 2230, 2235, 2236, 2257, 2267, 2279, 2281, 2282, 2283, 2287, 2288, 2302, 2314, 2316, 2486, 2489, 2491, 2492, 2495, 2496, 2504, 2511, 2524, 2525, 2539, 2544, 2546, 2549, 2550, 2551, 2558, 2561, 2562, 2710, 2713, 2715 | |
| 28 | 2-8-8-0 | 3500, 3501, 3502, 3504, 3506, 3512, 3518, 3519, 3520, 3521, 3523, 3524, 3528, 3530, 3533, 3534, 3538, 3540, 3541, 3543, 3544, 3552, 3553, 3558, 3563, 3566, 3567, 3568 | |
| 5 | 4-10-2 | 5090, 5091, 5092, 5093, 5097 | |
| 34 | 4-12-2 | 9004, 9005, 9012, 9019, 9020, 9021, 9022, 9023, 9024, 9027, 9028, 9029, 9030, 9032, 9036, 9039, 9045, 9047, 9049, 9053, 9054, 9055, 9057, 9059, 9079, 9080, 9083, 9087, 9504, 9506, 9507, 9511, 9513, 9514 | |
| 11 | 4-6-2 | 2860, 2889, 2894, 2908, 3134, 3160, 3217, 3221, 3222, 3226, 3227 | |
| 1 | 4-6-6-4 | 3834 | |
| 16 | 4-8-2 | 7000, 7003, 7008, 7012, 7018, 7019, 7020, 7022, 7027, 7031, 7032, 7034, 7038, 7039, 7852, 7859 | |
| 2 | 4-8-4 | 806, 810 |
Diesel/GTEL
| Added (274) | 15 | 4500 GTEL | UP 61-75 |
| 5 | E9A | UP 943-947 | |
| 10 | E9B | UP 950B-959B | |
| 169 | GP9A | UP 130-248, 250-299 | |
| 75 | GP9B | UP 130B-204B |
1955
(621 total steam on 1 January 1955)
(1,032 total diesel/GTEL on 1 January 1955)
Steam
| Retired (185) | 10 | 0-6-0 | 4245, 4246, 4422, 4448, 4753, 4918, 4924, 4925, 4926, 4928 |
| 41 | 2-10-2 | 5002, 5006, 5009, 5036, 5044, 5049, 5050, 5051, 5052, 5053, 5057, 5060, 5067, 5073, 5074, 5083, 5085, 5087, 5089, 5300, 5303, 5309, 5310, 5313, 5401, 5402, 5404, 5405, 5406, 5410, 5501, 5502, 5509, 5512, 5513, 5514, 5515, 5519, 5522, 5525, 5528 | |
| 37 | 2-8-0 | 206, 260, 272, 284, 414, 423, 432, 433, 437, 440, 477, 494, 513, 531, 561, 567, 576, 587, 593, 602, 604, 608, 613, 617, 737, 745, 751, 762, 765, 6007, 6028, 6041, 6045, 6054, 6206, 6260, 6284 | |
| 31 | 2-8-2 | 1905, 1934, 1942, 2001, 2013, 2100, 2104, 2105, 2108, 2116, 2117, 2125, 2159, 2207, 2208, 2210, 2223, 2252, 2259, 2309, 2310, 2318, 2487, 2488, 2499, 2516, 2548, 2557, 2702, 2704, 2709 | |
| 36 | 4-12-2 | 9001, 9003, 9006, 9009, 9010, 9011, 9013, 9014, 9015, 9016, 9017, 9031, 9033, 9035, 9037, 9038, 9041, 9042, 9043, 9044, 9046, 9048, 9050, 9051, 9061, 9078, 9082, 9084, 9085, 9086, 9502, 9503, 9508, 9509, 9510, 9512 | |
| 1 | 4-6-0 | 1242 | |
| 8 | 4-6-2 | 2888, 3131, 3135, 3136, 3137, 3138, 3219, 3223 | |
| 21 | 4-8-2 | 7002, 7006, 7010, 7014, 7015, 7016, 7017, 7021, 7025, 7029, 7033, 7035, 7036, 7850, 7851, 7855, 7856, 7858, 7866, 7868, 7869 |
Diesel
| Added (65) | 15 | E9A | UP 948-962 |
| 15 | E9B | UP 960B-974B | |
| 35 | S-4 | UP 1154-1188 | |
| Rebuilt (1) | 1 | GP9M | UP 261 (rebuilt to 2000 horsepower using AiResearch turbochargers) |
1956
(436 total steam on 1 January 1956)
(1,097 total diesel on 1 January 1956)
Steam
| Retired (191) | 14 | 0-6-0 | 4244, 4407, 4410, 4446, 4447, 4449, 4459, 4461, 4462, 4471, 4475, 4477, 4605, 4909 |
| 27 | 2-10-2 | 5008, 5020, 5024, 5028, 5030, 5033, 5034, 5035, 5056, 5065, 5069, 5071, 5072, 5079, 5088, 5304, 5311, 5315, 5318, 5408, 5414, 5503, 5516, 5517, 5518, 5524, 5529 | |
| 51 | 2-8-0 | 201, 237, 273, 275, 316, 325, 407, 419, 421, 448, 460, 465, 480, 485, 491, 492, 512, 526, 530, 532, 538, 560, 569, 583, 596, 603, 622, 730, 739, 740, 744, 748, 750, 752, 757, 758, 763, 764, 768, 6033, 6035, 6050, 6053, 6070, 6079, 6080, 6201, 6237, 6272, 6273, 6275 | |
| 61 | 2-8-2 | 1912, 1930, 1932, 1933, 1937, 1945, 1948, 2030, 2109, 2115, 2133, 2148, 2164, 2167, 2171, 2201, 2204, 2209, 2219, 2244, 2245, 2264, 2270, 2280, 2285, 2286, 2289, 2290, 2292, 2294, 2298, 2306, 2307, 2312, 2315, 2317, 2320, 2480, 2482, 2483, 2484, 2485, 2494, 2510, 2515, 2517, 2519, 2528, 2529, 2540, 2545, 2547, 2552, 2556, 2559, 2560, 2703, 2714, 2726, 2728, 2730 | |
| 11 | 4-12-2 | 9000, 9007, 9026, 9040, 9052, 9058, 9060, 9062, 9500, 9501, 9505 | |
| 3 | 4-6-2 | 2897, 3202, 3206 | |
| 8 | 4-6-6-4 | 3805, 3810, 3811, 3813, 3826, 3833, 3835, 3836 | |
| 10 | 4-8-2 | 7013, 7023, 7028, 7853, 7854, 7857, 7862, 7863, 7864, 7865 | |
| 6 | 4-8-4 | 807, 811, 812, 818, 822, 831 |
Diesel
| Added (23) | 8 | E9A | UP 900-907 |
| 5 | E9B | UP 900B-904B | |
| 10 | S-4 | UP 1189-1198 | |
| Rebuilt (2) | 1 | GP9M | UP 281 (rebuilt to 2000 horsepower using AiResearch turbochargers) |
| 1 | GP9BM | UP 185B (rebuilt to 2000 horsepower using AiResearch turbochargers) | |
| Retired (13) | 1 | E3A | UP 991 |
| 1 | E3B | UP 992B | |
| 7 | E6A | UP 987, 992, 993, 994, 995, 996, 997 | |
| 4 | E6B | UP 985B, 985C, 987B, 987C |
(Operated the GM Aerotrain as City of Las Vegas, from December 1956 to September 1957)
1957
(245 total steam on 1 January 1957)
(1,107 total diesel/GTEL on 1 January 1957)
Steam
| Retired (113) | 5 | 0-6-0 | 4420, 4436, 4437, 4439, 4474 |
| 11 | 2-10-2 | 5014, 5037, 5041, 5047, 5063, 5064, 5078, 5080, 5301, 5307, 5316 | |
| 26 | 2-8-0 | 324, 332, 355, 357, 358, 430, 481, 486, 489, 490, 497, 533, 616, 618, 733, 743, 749, 6018, 6072, 6324, 6332, 6355, 6357, 6358, 6533, 6537 | |
| 31 | 2-8-2 | 1919, 1924, 1938, 2005, 2006, 2112, 2120, 2121, 2145, 2151, 2157, 2161, 2168, 2206, 2242, 2243, 2250, 2251, 2253, 2262, 2263, 2272, 2497, 2498, 2520, 2521, 2541, 2555, 2711, 2731, 2733 | |
| 1 | 4-6-2 | 3203 (UP's last operating 4-6-2 Pacific steam locomotive) | |
| 27 | 4-6-6-4 | 3704, 3711, 3714, 3800, 3801, 3802, 3807, 3808, 3809, 3812, 3814, 3815, 3816, 3817, 3819, 3820, 3821, 3822, 3824, 3825, 3827, 3831, 3837, 3839, 3955, 3960, 3961 | |
| 12 | 4-8-4 | 800, 803, 809, 813, 815, 816, 819, 820, 824, 827, 840, 841 |
Diesel/GTEL
| Added (100) | 50 | GP9A | UP 300-349 |
| 50 | GP9B | UP 300B-349B |
(Operated the GM Aerotrain as City of Las Vegas, from December 1956 to September 1957)
1958
(132 total steam on 1 January 1958)
(1,207 total diesel/GTEL on 1 January 1958)
Steam
(No retirements)
Diesel/GTEL
| Added (70) | 5 | 8500 GTEL | UP 1-5 |
| 32 | F9A | UP 500-532 (rebuilt from F3As) | |
| 33 | F9B | UP 500B-533B (rebuilt from F3Bs) | |
| Retired (67) | 33 | F3A | UP 1500-1503, 1505, 1507-1511, 1513-1520, 1522-1525, 1527, 1528, 1550-1552, 1554, 1557, 1559, 1561, 1562, 1563 (all rebuilt to F9As) |
| 34 | F3B | UP 1500B, 1500C, 1502B, 1502C, 1504B, 1504C, 1506B, 1506C, 1508B, 1510B, 1512C, 1516B, 1516C, 1518B, 1518C, 1520C, 1522C, 1524B, 1524C, 1526B, 1526C, 1528B, 1528C, 1550B, 1550C, 1554B, 1554C, 1556B, 1556C, 1558B, 1560B, 1560C, 1562B, 1562C (all rebuilt to F9Bs) |
1959
(132 total steam on 1 January 1959)
(1,210 total diesel/GTEL on 1 January 1959)
Steam
| Retired (46) | 6 | 2-8-0 | 264, 428, 535, 537, 6264, 6535 |
| 3 | 2-8-2 | 2295, 2537, 2564 | |
| 27 | 4-6-6-4 | 3705, 3709, 3716, 3717, 3803, 3804, 3823, 3828, 3829, 3830, 3832, 3838, 3933, 3935, 3936, 3939, 3940, 3941, 3942, 3945, 3947, 3948, 3949, 3951, 3963, 3964, 3994 | |
| 10 | 4-8-4 | 801, 804, 805, 808, 821, 826, 834, 837, 842, 843 |
(Last of steam: The last operation of steam locomotives in revenue freight service was in July 1959. The railroad entered 1960 with 86 steam locomotives still on roster; 31 were retired during 1960, 25 during 1961, and 22 during 1962, leaving eight steam locomotives in 1963. Between 1963 and 1988, the five remaining 4-8-8-4 Big Boy locomotives were retired and donated for preservation, and in 1996, 4-6-0 1243 was donated for preservation, leaving 4-8-4 844 and 4-6-6-4 3985 in regular excursion service.)
Diesel/GTEL
| Added (105) | 6 | 8500 GTEL | UP 6-11 |
| 9 | F9A | UP 533-540 (rebuilt from F3As) | |
| 10 | F9B | UP 534B-542B (rebuilt from F3Bs) | |
| 2 | UM20B A-units | UP 620, 621 (former GE demonstrators) | |
| 2 | UM20B B-units | UP 620B, 621B (former GE demonstrators) | |
| 1 | RS-1M | UP 1270 (former Bamberger Railroad) | |
| 30 | SD24A | UP 400-429 | |
| 45 | SD24B | UP 400B-444B | |
| Rebuilt (21) | 3 | GP9M | UP 302, 318, 331 (rebuilt to 2000 horsepower using AiResearch turbochargers) |
| 6 | GP9M | UP 306, 310, 314, 315, 324, 336 (rebuilt to 2000 horsepower using Elliott turbochargers) | |
| 6 | GP9M | UP 300, 301, 305, 311, 313, 320 (rebuilt to 2000 horsepower using an EMD turbocharger) | |
| 6 | GP9BM | UP 303B, 306B, 311B, 312B, 317B, 348B (rebuilt to 2000 horsepower using AiResearch turbochargers) | |
| 4 | GP9BM | UP 307B, 323B, 324B, 345B (rebuilt to 2000 horsepower using Elliott turbochargers) | |
| 3 | GP9BM | UP 300B, 301B, 308B (rebuilt to 2000 horsepower using an EMD turbocharger) | |
| Retired (17) | 8 | F3A | UP 1506, 1512, 1521, 1526, 1555, 1556, 1558, 1560 (all rebuilt to F9As) |
| 9 | F3B | UP 1508C, 1510C, 1512B, 1514B, 1514C, 1520C, 1522B, 1552B, 1552C (all rebuilt to F9Bs) |
1960
(1,298 total diesel/GTEL on 1 January 1960)
| Added (42) | 12 | 8500 GTEL | UP 12-23 |
| 30 | GP20 | UP 700-729 |
1961
(1,340 total diesel/GTEL on 1 January 1961)
| Added (20) | 7 | 8500 GTEL | UP 24-30 |
| 4 | RS-27 | UP 675-678 (former Alco demonstrators) | |
| 2 | E9A | UP 908, 909 | |
| 3 | SD24 | UP 445-447 (former EMD demonstrators) | |
| 4 | U25B | UP 625-628 | |
| Retired (16) | 2 | E7A | UP 998, 999 |
| 8 | Erie A | UP 650-657 | |
| 5 | Erie B | UP 650B, 652B, 654B, 656B | |
| 1 | PA-1 | UP 607 |
1962
(1,344 total diesel/GTEL on 1 January 1962)
| Added (106) | 1 | Coal Turbine | UP 80, 80B |
| 2 | E9A | UP 910, 911 | |
| 2 | E9B | UP 910B, 911B | |
| 75 | GP30 | UP 800-874 | |
| 1 | GP30 | UP 875 (former EMD demonstrator) | |
| 12 | RS-1 | UP 1211-1222 (leased from Spokane International) | |
| 1 | SD24 | UP 448 (former EMD demonstrator) | |
| 12 | U25B | UP 629-640 (UP 633-636 were former GE demonstrators) | |
| Rebuilt (6) | 6 | GP9BM | UP 302B, 309B, 316B, 322B, 332B, 344B (rebuilt to 2000 horsepower using an EMD turbocharger) |
| Retired (41) | 7 | 4500 GTEL | UP 51-57 |
| 1 | DRS-6-4-15 | UP 1250 | |
| 1 | E7A | UP 986 | |
| 3 | E7B | UP 994B, 996B, 998B | |
| 6 | F3A | UP 1405, 1421, 1430, 1437, 1455, 1461 | |
| 7 | F3B | UP 1400B, 1428C, 1430C, 1451B, 1456B, 1456C, 1458C | |
| 1 | F7A | UP 1482 | |
| 4 | F7B | UP 1464C, 1478C, 1480C, 1484B | |
| 5 | H20-44 | UP 1361, 1362, 1363, 1366, 1369 | |
| 6 | VO-1000 | UP 1200-1205 |
1963
(1,409 total diesel/GTEL on 1 January 1963)
| Added (84) | 3 | E9A | UP 912-914 |
| 2 | E9B | UP 912B, 913B | |
| 36 | GP30 | UP 700-735 | |
| 40 | GP30B | UP 700B-739B | |
| 3 | U50 | UP 31, 32, 33 | |
| Rebuilt(14) | 6 | GP9M | UP 322, 330, 332, 339, 342, 348 (rebuilt to 2000 horsepower using an EMD turbocharger) |
| 8 | GP9BM | UP 314B, 315B, 318B, 326B, 333B, 336B, 337B, 343B (rebuilt to 2000 horsepower using an EMD turbocharger) | |
| Retired (85) | 11 | 4500 GTEL | UP 60-66, 71-73, 75 |
| 3 | E7A | UP 988, 989, 990 | |
| 2 | E7B | UP 988B, 990B | |
| 19 | F3A | UP 1401, 1402, 1404, 1409, 1413, 1418, 1419, 1420, 1427, 1439, 1444, 1446, 1447, 1452, 1454, 1456, 1457, 1458, 1460 | |
| 17 | F3B | UP 1402B, 1404B, 1410B, 1412B, 1414C, 1416B, 1416C, 1418C, 1432B, 1434B, 1436C, 1438C, 1451C, 1452B, 1455B, 1457B, 1457C | |
| 9 | F7A | UP 1464, 1465, 1466, 1472, 1475, 1478, 1479, 1480, 1481 | |
| 14 | F7B | UP 1464B, 1466B, 1468C, 1474B, 1476B, 1482B, 1484C, 1486C, 1488C, 1490B, 1490C, 1494B, 1496B, 1496C | |
| 1 | F9A | UP 516 (wrecked) | |
| 1 | FA-1 | UP 1617 | |
| 4 | FB-1 | UP 1600C, 1604C, 1612B, 1612C | |
| 2 | UM20B A-units | UP 620, 621 | |
| 2 | UM20B B-units | UP 620B, 621B |
1964
(1,408 total diesel/GTEL on 1 January 1964)
| Added (66) | 27 | DD35 | UP 72B-98B (UP 72B, 73B were former EMD demonstrators) |
| 24 | GP35 | UP 740-763 (UP 762, 763 were former EMD demonstrators) | |
| 12 | U50 | UP 34-45 | |
| 2 | C855A | UP 60, 61 | |
| 1 | C855B | UP 60B | |
| Rebuilt (12) | 7 | GP9M | UP 304, 307, 326, 328, 334, 340, 344 (rebuilt to 2000 horsepower using an EMD turbocharger) |
| 5 | GP9BM | UP 319B, 327B, 334B, 340B, 342B (rebuilt to 2000 horsepower using an EMD turbocharger) | |
| Retired (120) | 7 | 4500 GTEL | UP 58, 59, 67-70, 74 |
| 1 | Coal Turbine | UP 80, 80B | |
| 20 | F3A | UP 1403, 1407, 1410, 1417, 1425, 1426, 1428, 1429, 1432, 1433, 1434, 1438, 1441, 1445, 1448, 1449, 1450, 1451,1453, 1459 | |
| 20 | F3B | UP 1400C, 1402C, 1408B, 1408C, 1410C, 1412C, 1430B, 1432C, 1434C, 1436B, 1438B, 1440B, 1440C 1452C, 1453B, 1453C, 1454B, 1454C, 1455C, 1458B | |
| 10 | F7A | UP 1467-1471, 1473, 1474, 1476, 1477, 1483 | |
| 17 | F7B | UP 1466C, 1468B, 1470B, 1470C, 1472B, 1472C, 1474C, 1476C, 1478C, 1480B, 1482C, 1486B, 1488B, 1492B, 1492C, 1494C, 1498B | |
| 14 | FA-1 | UP 1604, 1605, 1606, 1612, 1615, 1620, 1622, 1623, 1629, 1630, 1633, 1636, 1639, 1640 | |
| 11 | FB-1 | UP 1600B, 1604B, 1606C, 1616B, 1618C, 1626B, 1630B, 1630C, 1632C, 1640B, 1642B | |
| 2 | FP7 | UP 1498, 1499 | |
| 2 | GP9 | UP 159 (wrecked), 199 (wrecked) | |
| 4 | H15-44 | UP 1325-1328 | |
| 6 | H20-44 | UP 1360, 1364, 1365, 1367, 1368, 1370 | |
| 3 | PA-1 | UP 600-602 | |
| 3 | PB-1 | UP 604B, 606B, 607B |
1965
(1,354 total diesel/GTEL on 1 January 1965)
| Added (33) | 10 | SDP35 | UP 1400-1409 |
| 15 | DDA35 | UP 70-84 | |
| 8 | U50 | UP 46-53 | |
| Rebuilt (12) | 7 | GP9M | UP 308, 316, 317, 329, 335, 343, 347 (rebuilt to 2000 horsepower using an EMD turbocharger) |
| 5 | GP9BM | UP 321B, 325B, 328B, 335B, 339B (rebuilt to 2000 horsepower using an EMD turbocharger) | |
| Retired (80) | 5 | DS-4-4-10 | UP 1206-1210 |
| 1 | F7B | UP 1498C | |
| 29 | FA-1 | UP 1600, 1601, 1602, 1603, 1607, 1608, 1609, 1610, 1611, 1613, 1614, 1616, 1618, 1619, 1621, 1624, 1625, 1626, 1627, 1628, 1631, 1632, 1634, 1635, 1637, 1638, 1641, 1642, 1643 | |
| 29 | FB-1 | UP 1602B, 1602C, 1606B, 1608B, 1608C, 1610B, 1610C, 1614B, 1614C, 1616C, 1618B, 1620B, 1620C 1622B, 1622C, 1624B, 1624C, 1626C, 1628B, 1628C, 1632B, 1634B, 1634C, 1636B, 1636C, 1638B, 1638C, 1640C, 1642C | |
| 5 | H10-44 | UP 1300-1304 | |
| 1 | H15-44 | UP 1329 | |
| 3 | H16-44 | UP 1340, 1341, 1342 | |
| 4 | PA-1 | UP 603-606 | |
| 3 | PB-1 | UP 600B, 602B, 605B |
1966
(1,307 total diesel/GTEL on 1 January 1966)
| Added (103) | 10 | U28C | UP 2800-2809 |
| 10 | C630 | UP 2900-2909 | |
| 75 | SD40 | UP 3000-3039, 3048-3082 | |
| 8 | SD40X | UP 3040-3047 (former EMD test bed demonstrators) | |
| Rebuilt (1) | 1 | GP9M | UP 325 (rebuilt to 2000 horsepower using an EMD turbocharger) |
| Retired (38) | 1 | E8A | UP 925 |
| 14 | F9A | UP 500, 501, 502, 504, 505, 508, 510, 511, 514, 523, 526, 530, 532, 536 | |
| 21 | F9B | UP 500B, 502B-508B, 510B, 511B, 513B-516B, 518B, 519B, 528B, 533B, 535B, 538B, 541B | |
| 2 | NW2 | UP 1000, 1001 |
1967
(1,372 total diesel/GTEL on 1 January 1967)
(No purchases)
(No retirements)
1968
(1,372 total diesel/GTEL on 1 January 1968)
| Added (53) | 1 | HH-1000 | UP 1251 (former Mt. Hood Railroad) |
| 1 | S-3 | UP 1250 (former Mt. Hood Railroad) | |
| 1 | SD24M | UP 3100 (3000 horsepower, rebuilt from SD24 423) | |
| 50 | SD45 | UP 3600-3649 | |
| Retired (51) | 5 | 8500 GTEL | UP 1-4, 19 |
| 4 | AS-616 | UP 1262-1265 | |
| 1 | E9A | UP 962 (wrecked) | |
| 7 | F9A | UP 506, 509, 512, 520, 525, 527, 540 | |
| 9 | F9B | UP 501B, 512B, 521B, 525B, 526B, 529B, 530B, 534B, 537B | |
| 1 | GP30 | UP 857 (wrecked) | |
| 4 | RS-2 | UP 1292-1295 | |
| 3 | RSC-2 | UP 1284, 1287, 1290 | |
| 16 | S-2 | UP 1100, 1103, 1105, 1107, 1108, 1110, 1114, 1115, 1118, 1128, 1133, 1136, 1139, 1147, 1150, 1153 | |
| 1 | SD24 | UP 423 (rebuilt to SD24M) |
1969
(1,374 total diesel/GTEL on 1 January 1969)
| Added (27) | 25 | DDA40X | UP 6900-6924 |
| 2 | U50C | UP 5000, 5001 | |
| Retired (76) | 9 | 8500 GTEL | UP 5, 6, 9, 11, 12, 13, 15, 17, 20 |
| 2 | AS-616 | UP 1260, 1261 | |
| 5 | E8A | UP 930, 935, 936, 937, 941 | |
| 13 | E8B | UP 924B, 930B, 931B, 936B, 937B, 938B, 939B, 942B, 943B, 945B, 946B, 947B, 949B | |
| 5 | E9A | UP 900, 901, 902, 903, 905 | |
| 1 | GP9 | UP 183 (wrecked) | |
| 12 | RS-1 | UP 1211-1222 (leased from Spokane International) | |
| 1 | RS-2 | UP 1291 | |
| 4 | RSC-2 | UP 1283, 1286, 1288, 1289 | |
| 24 | S-2 | UP 1101, 1104, 1106, 1111, 1113, 1117, 1119, 1121, 1122, 1124, 1125, 1126, 1129, 1130, 1131, 1132, 1134, 1140, 1142, 1145, 1146, 1148, 1151, 1152 |
1970
(1,325 total diesel/GTEL on 1 January 1970)
| Added (23) | 10 | DDA40X | UP 6925-6934 |
| 13 | U50C | UP 5002-5014 | |
| Retired (53) | 16 | 8500 GTEL | UP 7, 8, 10, 14, 16, 18, 21-30 |
| 2 | C855A | UP 60, 61 | |
| 1 | C855B | UP 60B | |
| 3 | E8B | UP 928B, 929B, 933B | |
| 4 | E9B | UP 900B, 901B, 903B, 904B | |
| 1 | F9B | UP 527B | |
| 1 | GP30B | UP 710B (wrecked) | |
| 1 | HH-1000 | UP 1251 (former Mt. Hood Railroad) | |
| 1 | RS-27 | UP 677 (wrecked) | |
| 4 | S-2 | UP 1109, 1116, 1138, 1149 | |
| 1 | S-3 | UP 1250 (former Mt. Hood Railroad) | |
| 17 | S-4 | UP 1157, 1158, 1159, 1160, 1163, 1164, 1165, 1167, 1168, 1173, 1176, 1180, 1184, 1185, 1186, 1196, 1197 | |
| 1 | U25B | UP 627 (wrecked) |
1971
(1,295 total diesel on 1 January 1971)
| Added (77) | 12 | DDA40X | UP 6935-6946 |
| 25 | U50C | UP 5015-5039 | |
| 40 | SD40 | UP 3083-3122 | |
| Retired (68) | 3 | E8A | UP 932, 933, 938 |
| 4 | E8B | UP 927B, 940B, 944B, 948B | |
| 10 | E9A | UP 906, 910, 911, 914, 944, 945, 946, 950, 956, 959 | |
| 13 | E9B | UP 902B, 910B, 911B, 913B, 950B, 956B, 957B, 959B, 960B, 961B, 962B, 964B, 965B | |
| 1 | GP7 | UP 128 (wrecked) | |
| 1 | NW2 | UP 1029 | |
| 4 | RSC-2 | UP 1280, 1281, 1282, 1285 | |
| 3 | RS-27 | UP 675, 676, 678 | |
| 10 | S-2 | UP 1102, 1112, 1120, 1123, 1127, 1135, 1137, 1141, 1143, 1144 | |
| 19 | S-4 | UP 1154, 1155, 1156, 1161, 1162, 1169, 1174, 1177, 1179, 1182, 1183, 1187, 1189, 1191, 1192, 1193, 1194, 1195, 1198 |
1972
(1,304 total diesel on 1 January 1972)
| Added (100) | 20 | U30C | UP 2810-2829 |
| 80 | SD40-2 | UP 3123-3202 | |
| Retired (103) | 6 | E8A | UP 926, 927, 929, 934, 940, 942 |
| 6 | E8B | UP 922B, 923B, 925B, 926B, 934B, 935B | |
| 11 | E9A | UP 904, 908, 912, 913, 947, 948, 949, 952, 957, 958, 961 | |
| 9 | E9B | UP 912B, 951B, 953B, 954B, 955B, 958B, 966B, 967B, 970B | |
| 19 | F9A | UP 503, 507, 513, 515, 517, 518, 519, 521, 522, 524, 528, 529, 531, 533, 534, 535, 537, 538, 539 | |
| 12 | F9B | UP 509B, 517B, 520B, 522B, 523B, 524B, 531B, 532B, 536B, 539B, 540B, 542B | |
| 1 | GP9B | UP 330B | |
| 14 | NW2 | UP 1002, 1010, 1014, 1016, 1038, 1046, 1053, 1057, 1060, 1067, 1070, 1073, 1079, 1084 | |
| 1 | RS-1M | UP 1270 (former Bamberger Railroad) | |
| 9 | S-4 | UP 1166, 1170, 1171, 1172, 1175, 1178, 1181, 1188, 1190 | |
| 15 | U25B | UP 625, 626, 628-640 |
1973
(1,301 total diesel on 1 January 1973)
| Added (80) | 40 | U30C | UP 2830-2869 |
| 40 | SD40-2 | UP 3203-3242 | |
| 1 | Yard Slug | UP S1 (rebuilt from GP9B 176B) (not included in total) | |
| Retired (33) | 10 | C630 | UP 2900-2909 |
| 2 | E8A | UP 931, 939 | |
| 2 | E8B | UP 932B, 941B | |
| 5 | E9A | UP 907, 909, 943, 953, 955 | |
| 4 | E9B | UP 952B, 963B, 971B, 972B | |
| 1 | GP30 | UP 864 (wrecked) | |
| 1 | GP9B | UP 176B (rebuilt to yard slug) | |
| 2 | NW2 | UP 1009, 1020 (wrecked) | |
| 6 | U50 | UP 33, 35, 38, 44, 46, 52 |
1974
(1,348 total diesel on 1 January 1974)
| Added (120) | 40 | GP38-2 | UP 2000-2039 |
| 45 | SD40-2 | UP 3243-3287 | |
| 35 | U30C | UP 2870-2904 | |
| 1 | Yard Slug | UP S2 (rebuilt from GP9B 341B) (not included in total) | |
| 1 | Yard Slug | UP S3 (rebuilt from GP9B 301B) (not included in total) | |
| Retired (22) | 1 | DDA40X | UP 6903 (wrecked) |
| 1 | GE 44 ton | UP 903999 | |
| 2 | GP9 | UP 140 (wrecked), 144 (wrecked) | |
| 3 | GP9B | UP 301B, 324B, 341B | |
| 1 | NW2 | UP 1048 (sold to PFE) | |
| 14 | U50 | UP 31, 32, 34, 36, 37, 39-43, 47-50 |
1975
(1,446 total diesel on 1 January 1975)
| Added (52) | 20 | GP38-2 | UP 2040-2059 |
| 17 | SD40-2 | UP 3288-3304 | |
| 15 | U30C | UP 2905-2919 | |
| 1 | Yard Slug | UP S4 (rebuilt from GP9B 316B) (not included in total) | |
| Retired (5) | 3 | GP9 | UP 276 (wrecked), 309 (wrecked), 310 (wrecked) |
| 1 | GP9B | UP 316B (rebuilt to yard slug) | |
| 1 | NW2 | UP 1028 (wrecked) |
1976
(1,493 total diesel on 1 January 1976)
| Added (100) | 40 | U30C | UP 2920-2959 |
| 60 | SD40-2 | UP 3305-3334, 8035-8064 | |
| 1 | Yard Slug | UP S5 (rebuilt from GP9B 314B) (not included in total) | |
| 1 | Yard Slug | UP S6 (rebuilt from GP9B 306B) (not included in total) | |
| Retired (132) | 33 | GP9 | UP 130, 169, 172, 178, 181, 185, 190, 198, 207, 208, 214, 218, 227, 234, 235, 241, 242, 251, 254, 263, 268, 274, 277, 281, 290, 292, 301, 306, 322, 323, 333, 342, 346 |
| 89 | GP9B | UP 130B, 131B, 132B, 133B, 135B, 136B, 137B, 139B, 140B, 141B, 142B, 144B, 145B, 146B, 147B, 148B, 149B, 150B, 151B, 152B, 153B, 154B, 155B, 159B, 160B, 161B, 162B, 163B, 165B, 166B, 167B, 168B, 169B, 170B, 171B, 172B, 173B, 175B, 177B, 178B, 180B, 181B, 182B, 183B, 185B, 187B, 188B, 189B, 190B, 191B, 192B, 193B, 195B, 196B, 198B, 199B, 200B, 201B, 202B, 203B, 300B, 302B, 304B, 305B, 306B, 308B, 310B, 311B, 313B, 314B, 315B, 317B, 319B, 320B, 321B, 322B, 323B, 326B, 327B, 328B, 331B, 332B, 333B, 342B, 343B, 344B, 345B, 346B, 349B | |
| 7 | NW2 | UP 1015, 1021, 1033, 1035, 1045, 1066, 1089 | |
| 1 | SW9 | UP 1830 | |
| 1 | TR5A | UP 1870 | |
| 1 | TR5B | UP 1872B |
1977
(1,461 total diesel on 1 January 1977)
| Added (90) | 15 | C30-7 | UP 2960-2974 |
| 75 | SD40-2 | UP 3335-3399, 8065-8074 | |
| Retired (113) | 7 | GP20 | UP 470, 471, 478, 479, 482, 488, 497 |
| 2 | GP30B | UP 712B, 725B (wrecked) | |
| 8 | GP7 | UP 102, 104, 106, 109, 110, 124, 125, 129 | |
| 5 | GP9 | UP 135, 176, 196, 201, 245 | |
| 10 | GP9B | UP 156B, 174B, 179B, 194B, 197B, 204B, 307B, 329B, 335B, 336B | |
| 13 | NW2 | UP 1003, 1005, 1008, 1011, 1023, 1034, 1036, 1058, 1065, 1071, 1072, 1074, 1088 | |
| 8 | SD24 | UP 407, 408, 411, 415, 416, 418, 421, 427 | |
| 33 | SD24B | UP 400B, 402B, 403B, 404B, 405B, 406B (rebuilt to yard slug), 407B, 409B, 410B, 412B, 413B, 415B, 416B, 417B, 418B, 419B, 421B, 422B, 423B, 424B, 425B, 426B, 427B, 429B, 432B, 433B, 434B, 438B, 439B, 440B, 441B, 442B, 443B | |
| 1 | SD40 | UP 3071 (wrecked) | |
| 2 | SD40-2 | UP 3146 (wrecked), 3336 (wrecked) | |
| 1 | SW7 | UP 1809 | |
| 3 | SW9 | UP 1827 (wrecked), 1842 (wrecked), 1863 | |
| 3 | U50 | UP 45, 51, 53 | |
| 17 | U50C | UP 5000-5016 |
1978
(1,438 total diesel on 1 January 1978)
| Added (120) | 25 | C30-7 | UP 2415-2439 |
| 89 | SD40-2 | UP 3410-3498 | |
| 6 | GP40X | UP 9000-9005 | |
| 1 | Yard Slug | UP S7 (rebuilt from SD24B 406B) (not included in total) | |
| 1 | Yard Slug | UP S3 (rebuilt from SD24B 444B) (not included in total) | |
| Retired (97) | 1 | DDA40X | UP 6921 (wrecked) |
| 7 | GP20 | UP 472, 473, 480, 483, 485, 489, 499 | |
| 10 | GP7 | UP 100, 101, 108, 113, 114, 115, 116, 119, 122, 123 | |
| 19 | GP9 | UP 133, 145, 147, 161, 179, 205, 206, 238, 239, 250, 270, 273, 278, 282, 289, 302, 331, 334, 348 | |
| 14 | GP9B | UP 134B, 138B, 143B, 157B, 158B, 164B, 184B, 186B, 312B, 318B, 337B, 338B, 340B, 347B | |
| 9 | NW2 | UP 1004, 1018, 1019, 1022, 1047, 1052, 1056, 1068, 1069 | |
| 2 | SD7 | UP 456, 457 | |
| 9 | SD24B | UP 401B, 414B, 420B, 428B, 431B, 435B, 436B, 437B, 444B (rebuilt to yard slug) | |
| 2 | SW7 | UP 1803, 1819 | |
| 1 | SW9 | UP 1845 (wrecked) | |
| 23 | U50C | UP 5017-5039 |
1979
(1,461 total diesel on 1 January 1979)
| Added (182) | 20 | C30-7 | UP 2440-2459 |
| 160 | SD40-2 | UP 3499-3583, 3609-3658, 8075-8099 | |
| 1 | SW10 | UP 1839 (rebuilt from SW9, renumbered to UP 1201, 4/80) | |
| 1 | SW10 | UP 1848 (rebuilt from SW9, renumbered to UP 1200, 3/80) | |
| Retired (99) | 19 | DD35 | UP 72B, 74B, 75B, 77B, 78B, 79B, 83B, 84B, 85B, 86B, 87B, 88B, 89B, 91B, 92B, 95B, 96B, 97B, 98B |
| 3 | DDA35 | UP 70, 82, 83 | |
| 5 | GP7 | UP 105, 111, 112, 117, 120 | |
| 35 | GP9 | UP 141, 155, 158, 162, 166, 171, 174, 186, 194, 203, 213, 216, 219, 221, 224, 225, 228, 230, 244, 258, 259, 261, 279, 285, 286, 288, 297, 300, 304, 308, 319, 320, 321, 328, 339 | |
| 6 | GP9B | UP 303B, 309B, 325B, 334B, 339B, 348B | |
| 5 | GP20 | UP 477, 492, 493, 496, 498 | |
| 12 | NW2 | UP 1006, 1012, 1013, 1017, 1025, 1041, 1050, 1075, 1076, 1078, 1087, 1093 | |
| 4 | SD7 | UP 450-453 | |
| 2 | SD24 | UP 428, 445 | |
| 2 | SD24B | UP 411B, 430B | |
| 2 | SW9 | UP 1848, 1839 (rebuilt to SW10) | |
| 4 | U28C | UP 2802, 2803, 2805, 2807 |
1980
(1,544 total diesel on 1 January 1980)
(Added 76 units from return of leased locomotives upon shut down of CRI&P (Rock Island), 31 March 1980)
| Added (76) | 5 | C415 | CRI&P 420-424 |
| 51 | GP40 | CRI&P 340-359, 362-369, 371, 372, 373, 4700-4719 | |
| 20 | U28B | CRI&P 262-281 | |
| Added (165) | 80 | C30-7 | UP 2460-2539 |
| 146 | SD40-2 | UP 3659-3804 | |
| 4 | SD40-2S | UP 3805-3808 (S=Special; extra carbody length) | |
| 1 | SD45M (Sulzer) | UP 60 (rebuilt from SD45 34) | |
| 11 | SW10 | UP 1202-1212 (rebuilt from SW9s) | |
| Retired (93) | 5 | C415 | CRI&P 420-424 |
| 7 | DD35 | UP 73B, 76B, 80B, 81B, 82B, 90B, 94B | |
| 4 | DDA35 | UP 75, 78, 80, 84 | |
| 1 | E8A | UP 928 | |
| 3 | E9A | UP 951 (transferred to heritage fleet), 954, 960 | |
| 4 | E9B | UP 968B, 969B, 973B, 974B | |
| 2 | GP7 | UP 118, 127 | |
| 27 | GP9 | UP 134, 142, 143, 148, 149, 157, 164, 173, 182, 184, 191, 200, 210, 229, 243, 253, 255, 262, 267, 287, 293, 311, 312, 313, 325, 330, 349 | |
| 3 | GP20 | UP 475, 484, 490 | |
| 4 | GP30B | UP 708B, 719B (wrecked), 720B, 738B | |
| 6 | NW2 | UP 1027, 1031, 1063, 1064, 1082, 1090 | |
| 2 | SD7 | UP 455, 458 | |
| 3 | SD24 | UP 409, 414, 426 | |
| 1 | SD45 | UP 34 (rebuilt to SD45M) | |
| 11 | SW9 | UP 1828, 1831, 1836, 1847, 1850, 1853, 1859, 1861, 1864, 1865, 1866 (rebuilt to SW10s) | |
| 5 | U28B | UP 512 (ex CRI&P 274), CRI&P 263, 266, 271, 275 | |
| 3 | U28C | UP 2800, 2808, 2809 | |
| 2 | U30C | UP 2820 (wrecked), 2870 (wrecked) |
1981
(1,769 total diesel on 1 January 1981)
| Added (21) | 4 | SD45M (Sulzer) | UP 61-64 (rebuilt from SD45s 14, 15, 13, 8) |
| 14 | SW10 | UP 1213-1226 (rebuilt from SW9s) | |
| 3 | SW10 | UP 1227-1229 (rebuilt from TR5As) | |
| Retired (92) | 1 | DD35 | UP 93B |
| 8 | DDA35 | UP 71, 72, 73, 74, 76, 77, 79, 81 | |
| 2 | GP7 | UP 107, 126 | |
| 28 | GP9 | UP 146, 163, 168, 192, 217, 220, 236, 240, 249, 257, 266, 271, 283, 303, 305, 314, 315, 316, 317, 324, 327, 335, 336, 338, 340, 345, 347 | |
| 2 | GP20 | UP 486, 495 | |
| 6 | GP30B | UP 705B, 706B, 714B, 727B, 730B, 734B | |
| 6 | NW2 | UP 1026, 1032, 1044, 1059, 1083, 1094 | |
| 6 | SD24 | UP 403, 405, 406, 419, 447, 448 | |
| 1 | SD24B | UP 408B | |
| 1 | SD40 | UP 3119 (wrecked) | |
| 5 | SD45 | UP 8, 13, 14, 15, 43 (UP 8, 13, 14, 15 rebuilt to SD45M) | |
| 1 | SW7 | UP 1812 | |
| 15 | SW9 | UP 1825, 1832, 1835, 1843, 1844, 1846, 1849, 1851, 1852, 1854, 1856, 1857, 1858, 1860, 1862 (all but UP 1843 rebuilt to SW10s) | |
| 3 | TR5A | UP 1873, 1874, 1876 (rebuilt to SW10s) | |
| 3 | TR5B | UP 1873B, 1874B, 1876B | |
| 1 | U28B | UP 508 (ex CRI&P 270) | |
| 3 | U28C | UP 2801, 2804 (training locomotive), 2806 |
1982
(1,698 total diesel on 1 January 1982)
| Added (16) | 1 | SD45M (Sulzer) | UP 65 (rebuilt from SD45 37) |
| 7 | SW10 | UP 1231, 1333, 1236-1239, 1243 (rebuilt from SW7s) | |
| 5 | SW10 | UP 1230, 1232, 1240, 1242, 1244 (rebuilt from SW9s) | |
| 3 | SW10 | UP 1234, 1235, 1241 (rebuilt from TR5As) | |
| Retired (99) | 22 | GP9 | UP 131, 132, 138, 152, 153, 154, 160, 180, 212, 233, 237, 246, 252, 269, 280, 298, 299, 318, 326, 341, 343, 344 |
| 4 | GP20 | UP 474, 476, 491, 494 | |
| 25 | GP30 | UP 700, 708, 709, 710, 712, 713, 714, 716, 722, 724, 731, 734, 801, 809, 810, 814, 815, 835, 839, 845, 852, 861, 862, 867, 875 | |
| 4 | GP35 | UP 740, 752, 754, 755 | |
| 3 | NW2 | UP 1049, 1051, 1054 | |
| 2 | SD7 | UP 454, 459 | |
| 5 | SD24 | UP 402, 404, 412, 420, 424 | |
| 1 | SD45 | UP 37 (rebuilt to SD45M) | |
| 7 | SW7 | UP 1806, 1810, 1815, 1817, 1821, 1822, 1824 (rebuilt to SW10s) | |
| 5 | SW9 | UP 1826, 1833, 1834, 1840, 1855 (rebuilt to SW10s) | |
| 3 | TR5A | UP 1871, 1872, 1875 (rebuilt to SW10s) | |
| 3 | TR5B | UP 1870B, 1871B, 1875B | |
| 14 | U28B | UP 502, 503, 506, 507, 510, 515-519 (ex CRI&P 264, 265, 268, 269, 272, 277- 281), CRI&P 262, 267, 273, 276 | |
| 1 | U30C | UP 2948 (wrecked) | |
| 1 | Yard Slug | UP S3 (not included in total) |
(Added 1,565 units, along with 23 yard slugs, from control of Missouri Pacific, effective on 1 January 1983)
(Added 145 units from control of Western Pacific, effective on 1 January 1983)
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