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Union Pacific Railroad

Roster of Diesel and Turbine Locomotives, 1934-2009

This page was last updated on December 27, 2015.

(Return to UP Diesel Roster Index Page)

Roster Listing

GE C30-7 -- 86 units
3000 horsepower; C-C trucks; 395,000 pounds operating weight

Road
Number
First
Number
Second
Number
Builder
Date
Builder
Number
Date To
400/500 Series
7874 Series
Number
Renumber
Date
Date
Retired
Notes
UP 400 UP 2960 UP 2400 Jul 1977 41558 11 Nov 1996     7 Feb 2001  
UP 401 UP 2961 UP 2401 Jul 1977 41559 8 Nov 1996     30 Apr 1999 1
UP 402 UP 2962 UP 2402 Aug 1977 41560 19 Nov 1996     28 Dec 1999  
UP 403 UP 2963 UP 2403 Aug 1977 41561 21 Nov 1996     30 Apr 1999 1
UP 404 UP 2964 UP 2404 Aug 1977 41562 11 Nov 1996     30 Apr 1999 1
UP 405 UP 2965 UP 2405 Aug 1977 41563 12 Nov 1996     25 May 2000  
UP 406 UP 2966 UP 2406 Aug 1977 41564 19 Nov 1996     30 Apr 1999 1
UP 407 UP 2967 UP 2407 Aug 1977 41565 22 Nov 1996     27 Jun 2000  
UP 408 UP 2968 UP 2408 Aug 1977 41566 19 Nov 1996     30 Sep 1999  
UP 409 UP 2969 UP 2409 Aug 1977 41567 26 Dec 1996     31 Oct 2000  
UP 410 UP 2970 UP 2410 Aug 1977 41568 7 Dec 1996     28 Dec 1999  
UP 411 UP 2971 UP 2411 Sep 1977 41569 6 Feb 1997     30 Sep 1999  
UP 412 UP 2972 UP 2412 Sep 1977 41570 10 Jan 1997     23 Dec 1998  
UP 413 UP 2973 UP 2413 Sep 1977 41571 13 Mar 1997     11 Aug 1998 2
UP 414 UP 2974 UP 2414 Sep 1977 41572 7 Feb 1997     26 Sep 2000  
UP 415 UP 2415   Jun 1978 41782 16 May 1997     30 Sep 1999  
UP 416 UP 2416   Jun 1978 41783 11 Feb 1997     31 Mar 1999 1
UP 417 UP 2417   Jun 1978 41784 18 Dec 1997     30 Sep 1999  
UP 418 UP 2418   Jun 1978 41785 28 Dec 1996     29 Mar 2000  
UP 419 UP 2419   Jun 1978 41786 4 Feb 1997     30 Apr 1999 1
UP 420 UP 2420   Jun 1978 41787 11 Feb 1997     25 Feb 2000  
UP 423 UP 2423   Jul 1978 41790 7 Jan 1999 7883 5 Oct 2000 26 Sep 2000 3
UP 424 UP 2424   Jul 1978 41791 19 Apr 1997     11 Aug 1998 2
UP 425 UP 2426   Jul 1978 41793 9 Aug 1997     30 Apr 1999 1
UP 433 UP 2435   Dec 1978 42098 18 Jul 1998     31 May 1999  
UP 437 UP 2439   Dec 1978 42102 18 Nov 1997     6 Oct 1999  
UP 438 UP 2440   Jan 1979 42103 6 Nov 1996     27 Aug 1999  
UP 439 UP 2441   Jan 1979 42104 25 Nov 1997     30 Apr 1999 1
UP 444 UP 2446   Jan 1979 42109 19 Dec 1997     29 Mar 2001  
UP 445 UP 2447   Jan 1979 42110 28 Oct 1996     27 Feb 2001  
UP 447 UP 2449   Jan 1979 42112 17 Dec 1997     26 Sep 2000  
UP 448 UP 2450   Jan 1979 42113 30 Oct 1996     31 Dec 1997 2
UP 458 UP 2461   Jan 1980 42701 13 Dec 1997     26 Jan 2000  
UP 461 UP 2464   Jan 1980 42704 25 Mar 1997     30 Apr 1999 1
UP 462 UP 2465   Jan 1980 42705 6 Mar 1999     30 Nov 1999  
UP 464 UP 2467   Jan 1980 42707 3 Feb 1997     17 Mar 2000  
UP 466 UP 2469   Jan 1980 42709 30 May 1998     24 Sep 1998 2
UP 468 UP 2471   Jan 1980 42711 30 Mar 1998     30 Sep 1999  
UP 469 UP 2472   Jan 1980 42712 14 May 1997     11 Aug 1998 2
UP 470 UP 2473   Jan 1980 42713 1 Jul 1998     12 Oct 2000  
UP 472 UP 2476   Jan 1980 42716 28 Jan 1997     27 Feb 2001  
UP 474 UP 2478   Jan 1980 42718 26 Feb 1997     19 Dec 2001  
UP 476 UP 2480   Jan 1980 42720 10 Jul 1997     19 Apr 2001  
UP 477 UP 2481   Jan 1980 42721 9 Apr 1998     30 Nov 1999 4
UP 478 UP 2482   Jan 1980 42722 30 Nov 1998     30 Apr 1999 1
UP 479 UP 2483   Jan 1980 42723 6 Jun 1998     30 Apr 1999 1
UP 480 UP 2485   Jan 1980 42725 11 Dec 1996     27 Feb 2001  
UP 490 UP 2495   Feb 1980 42735 26 Dec 1997     27 Aug 1999  
UP 491 UP 2496   Feb 1980 42736 3 Sep 1997     19 Dec 2001  
UP 495 UP 2500   Aug 1980 43067 4 Feb 1997 7921 19 Nov 2001 12 Oct 2000 5
UP 496 UP 2501   Aug 1980 43068 11 Feb 1997     30 Sep 1999  
UP 497 UP 2502   Aug 1980 43069 11 Feb 1997     30 Apr 1999 1
UP 498 UP 2503   Aug 1980 43070 24 Jan 1997     18 Jun 2001  
UP 499 UP 2504   Aug 1980 43071 21 Feb 1997     26 Jan 2000  
UP 500 UP 2505   Aug 1980 43072 26 Feb 1997     30 Apr 1999 1
UP 501 UP 2506   Aug 1980 43073 15 Feb 1997     26 Jan 2000  
UP 502 UP 2507   Aug 1980 43074 6 Mar 1997     31 May 1999 6
UP 503 UP 2508   Aug 1980 43075 3 Feb 1997     30 Apr 1999 1
UP 504 UP 2510   Aug 1980 43077 6 Mar 1997     12 Oct 2000  
UP 505 UP 2511   Aug 1980 43078 10 Feb 1997     30 Apr 1999 1
UP 506 UP 2512   Aug 1980 43079 14 Mar 1997     30 Jun 1999  
UP 507 UP 2513   Aug 1980 43080 3 Feb 1997     29 Jan 1999 1
UP 508 UP 2514   Aug 1980 43081 5 Feb 1997     27 Feb 2001  
UP 509 UP 2515   Aug 1980 43082 29 May 1997     21 Nov 2000 7
UP 510 UP 2516   Aug 1980 43083 17 Jun 1997 7928 23 Jun 2000 18 Apr 2000 8
UP 511 UP 2517   Aug 1980 43084 2 Jun 1997     25 Feb 2000  
UP 512 UP 2518   Aug 1980 43085 9 Jun 1997     18 Apr 2000  
UP 513 UP 2519   Aug 1980 43086 31 Jul 1997     30 Apr 1999 1
UP 514 UP 2520   Aug 1980 43087 10 Jun 1997     18 Apr 2000  
UP 515 UP 2521   Aug 1980 43088 10 Jun 1997     21 Nov 2000  
UP 516 UP 2522   Aug 1980 43089 7 Jul 1997     28 Feb 1999 1
UP 517 UP 2523   Aug 1980 43090 28 Oct 1997     17 Mar 2000  
UP 518 UP 2524   Sep 1980 43091 4 Dec 1996     19 Apr 2001  
UP 519 UP 2525   Sep 1980 43092 11 Aug 1997     20 May 1999  
UP 520 UP 2526   Sep 1980 43093 10 Feb 1998     30 Jun 1999  
UP 521 UP 2527   Sep 1980 43094 7 Aug 1998     21 Nov 2000  
UP 522 UP 2528   Sep 1980 43095 14 Aug 1998     26 Jan 2000  
UP 523 UP 2529   Sep 1980 43096 21 Aug 1997 7937 31 May 2000 18 Apr 2000 9
UP 524 UP 2530   Sep 1980 43097 2 Sep 1998     25 Feb 2000  
UP 525 UP 2531   Oct 1980 43098 10 Feb 1997     29 Jan 2001  
UP 527 UP 2533   Oct 1980 43100 24 Feb 1997     21 Nov 2000  
UP 529 UP 2535   Oct 1980 43102 14 Aug 1998     30 Apr 1999 1
UP 531 UP 2538   Oct 1980 43105 24 Aug 1998     7 Feb 2001  
UP 532 UP 2532   Oct 1980 43099 13 Aug 1998     31 Dec 1997 2
UP 534 UP 2534   Oct 1980 43101 13 Aug 1998     31 Dec 1997 2
UP 537 UP 2537   Oct 1980 43104 13 Aug 1998     11 Aug 1998 2

General Notes:

a. Total of 86 units renumbered from UP 2400-2539 series to UP 400-531 series.
b. UP 400-414 built as UP 2960-2974; renumbered to UP 2400-2414 in May in June, and July 1978.
c. UP 415-531 built as UP 2415-2538; last two digits differ due to retirement of eight units (UP 2425, 2432, 2459, 2475, 2484, 2509, 2536, 2539) prior to renumbering from 2400 series to 400 series.
d. UP 402, as UP B2402, operated in trailing unit-only status (by removal of cab signals, refrigerator, toilet, and cab seats) from 26 February 1992 until renumbered to 402 on 19 November 1996.
e. UP 400-531 group renumbered from UP 2400-2539 group beginning in October 1996 (UP 445, former UP 2447, was the first, completed on 28 October 1996) to avoid conflict with GP38-3 units in UP 2400/2500 series leased from Helm Financial Corp.
f. UP 532, 534, and 537 (all three units already retired) were renumbered from UP 2532, 2534, and 2537 to clear their 2500 series numbers for use by newly delivered GP38-2s; their previously assigned 500 series numbers (526, 528, and 530) are blank and not used.
g. Assigned UP 400-531 in October 1996, 86 units renumbered; assigned UP 7874-7941 in December 1999, four units renumbered; remaining 82 units all retired by 2001.
h. During the last week of November 1999, and the first week of December, 29 former UP C30-7s previously retired by UP and sold on 15 April 1999 to Boise Locomotive Co., at Boise, Idaho, moved over UP rails from Boise to North Platte, Nebraska, and on to Laredo, Texas. The units were interchanged to TFM and moved into Mexico over the following two weeks. The units involved were UP 401, 403, 404, 406, 413, 416, 424, 425, 448, 461, 469, 478, 479, 500, 507, 513, 529, 532, 2427, 2437, 2445, 2453, 2455, 2456, 2462, 2466, 2468, 2492, and 2498, and all were shown in UP's computer as being placed at the MPI de Mexico shop at San Luis Potosi by 18 December 1999. One report was that BLC had sold them to its affiliate MPI de Mexico, and that MPI de M will rebuild them for use by one of the Mexican roads.

Notes:

1. UP 401, 403, 404, 406, 416, 419, 425, 439, 461, 478, 479, 497, 500, 503, 505, 507, 513, 516, and 529 (19 units) were sold to Boise Locomotive Co., Boise, Idaho, on 30 September 1999.
2. UP 413, 424, 448, 466, 469, 532, 534, and 537 (eight units) were sold to Boise Locomotive Co., Boise, Idaho, on 15 April 1999.
3. UP 423 was retired on 26 September 2000, then renumbered to UP 7883 on 5 October 2000 to clear the 423 number for use by renumbered GP38-2 1923.
4. UP 477 was wrecked on 17 November 1999 at Carnes, Iowa; scrapped at wreck site.
5. UP 495 was retired on 12 October 2000 but was still on property and was renumbered to UP 7921 on 19 November 2001 to clear the UP 495 number for use by renumbered SP GP38-2 4869.
6. UP 502 was retired on 31 May 1999 but still on property and was renumbered to WP 502 on 16 November 2000 to clear the UP 502 number for use by renumbered GP38-2 2002.
7. UP 509 was retired on 21 November 2000 but was still on property and was renumbered to WP 509 on 7 January 2002 to clear the UP 509 number for use by renumbered GP38-2 2009.
8. UP 510 was retired on 18 April 2000, then renumbered to UP 7928 on 23 June 2000 to clear the UP 510 number for use by renumbered GP38-2 2010.
9. UP 523 was retired on 18 April 2000, then renumbered to UP 7937 on 31 May 2000 to clear the UP 523 number for use by renumbered GP38-2 2023.
   

EMD F9A -- 41 units
1750 horsepower; B-B trucks; 232,500 pounds operating weight

Road
Number
Previous
Number
Rebuild
Date
Builder
Date
Builder
Number
Date
Retired
Notes
UP 500 UP 1525 May 1958 Mar 1948 4641 Oct 1966 Traded to EMD in October 1966.
UP 501 UP 1562 Jun 1958 Jan 1949 6727 Oct 1966 Traded to EMD in October 1966.
UP 502 UP 1514 Jun 1958 May 1947 4601 Dec 1966 Traded to EMD in December 1966.
UP 503 UP 1510 Jun 1958 Jul 1948 5718 Feb 1972 Sold to CRI&P 4150 in February 1972.
UP 504 UP 1527 Jun 1958 Apr 1948 5707 Dec 1966 Traded to EMD in December 1966.
UP 505 UP 1515 Jun 1958 Jan 1948 4627 Nov 1966 Traded to EMD in November 1966.
UP 506 UP 1552 Jun 1958 Nov 1948 6717 Apr 1968 Traded to EMD in April 1968.
UP 507 UP 1517 May 1958 Oct 1947 4611 Feb 1972 Sold to CRI&P 4151 in February 1972.
UP 508 UP 1557 Jul 1958 Dec 1948 6722 Sep 1966 Traded to EMD in September 1966.
UP 509 UP 1500 Jul 1958 Sep 1948 6713 Jan 1968 Traded to EMD in January 1968.
UP 510 UP 1513 Jun 1958 Mar 1948 4636 Oct 1966 Traded to EMD in October 1966.
UP 511 UP 1508 Jul 1958 Jul 1948 6362 Sep 1966 Traded to EMD in September 1966.
UP 512 UP 1551 Jul 1958 Oct 1948 6716 Feb 1968 Traded to EMD in February 1968.
UP 513 UP 1559 Jul 1958 Dec 1948 6724 Feb 1972 Sold to CRI&P 4152 in February 1972.
UP 514 UP 1511 Jul 1958 Jul 1948 5717 Oct 1966 Traded to EMD in October 1966.
UP 515 UP 1561 Aug 1958 Jan 1949 6726 Feb 1972 Sold to CRI&P 4153 in February 1972.
UP 516 UP 1554 Jul 1958 Nov 1948 6719 Jan 1963 Traded to EMD in February 1963.
UP 517 UP 1509 Aug 1958 Jul 1948 5719 Feb 1972 Sold to CRI&P 4154 in February 1972.
UP 518 UP 1518 Aug 1958 Jan 1948 4616 Feb 1972 Sold to CRI&P 4155 in February 1972.
UP 519 UP 1528 Jul 1958 Apr 1948 5708 Feb 1972 Sold to CRI&P 4156 in February 1972.
UP 520 UP 1503 Sep 1958 Sep 1948 6334 Feb 1968 Traded to EMD in February 1968.
UP 521 UP 1524 Sep 1958 Feb 1948 4629 Feb 1972 Sold to CRI&P 4157 in February 1972.
UP 522 UP 1522 Sep 1958 Jan 1948 4621 Feb 1972 Sold to CRI&P 4158 in February 1972.
UP 523 UP 1501 Sep 1958 Sep 1948 6714 Oct 1966 Traded to EMD in October 1966.
UP 524 UP 1505 Sep 1958 Sep 1948 6332 Feb 1972 Sold to CRI&P 4159 in February 1972.
UP 525 UP 1560 Mar 1959 Jan 1949 6725 Jan 1968 Traded to EMD in January 1968.
UP 526 UP 1523 Oct 1958 Jan 1948 4628 Sep 1966 Traded to EMD in September 1966.
UP 527 UP 1520 Nov 1958 Jan 1948 4619 Jan 1968 Traded to EMD in January 1968.
UP 528 UP 1512 Jan 1959 Jul 1948 5716 Feb 1972 Sold to CRI&P 4160 in February 1972.
UP 529 UP 1526 Jan 1959 Mar 1948 4645 Feb 1972 Sold to CRI&P 4161 in February 1972.
UP 530 UP 1507 Feb 1959 Sep 1948 5721 Dec 1966 Traded to EMD in December 1966.
UP 531 UP 1502 Nov 1958 Sep 1948 6335 Feb 1972 Sold to CRI&P 4162 in February 1972.
UP 532 UP 1556 Mar 1959 Dec 1948 6721 Dec 1966 Traded to EMD in December 1966.
UP 533 UP 1555 Mar 1959 Nov 1948 6720 Feb 1972 Sold to CRI&P 4163 in February 1972.
UP 534 UP 1521 Jan 1959 Jan 1948 4620 Feb 1972 Sold to CRI&P 4164 in February 1972.
UP 535 UP 1550 Dec 1958 Oct 1948 6715 Feb 1972 Sold to CRI&P 4165 in February 1972.
UP 536 UP 1506 Apr 1959 Sep 1948 6331 Dec 1966 Traded to EMD in December 1966.
UP 537 UP 1558 Feb 1959 Dec 1948 6723 Feb 1972 Sold to CRI&P 4166 in February 1972.
UP 538 UP 1563 Nov 1958 Jan 1949 6728 Feb 1972 Sold to CRI&P 4167 in February 1972.
UP 539 UP 1519 Sep 1958 Jan 1948 4617 Feb 1972 Sold to CRI&P 4168 in February 1972.
UP 540 UP 1516 Dec 1958 Oct 1947 4613 Jan 1968 Traded to EMD in January 1968.

General Notes:

a. UP 500-540 rebuilt by EMD at La Grange, Illinois, from UP 1500 and 1550 class F3As, originally built in 1947 and 1948.
b. UP 503, 507, 517, 518, 527, 539 equipped with full pilot snowplow.
c. UP 516 was wrecked in 1962 and sent to EMD as a direct trade-in for GP30 735. UP records and EMD records show F9A 516 as having been "rebuilt" to GP30 735.
d. Fourteen units were traded to EMD in 1966 for SD40s and seven units were traded to EMD in 1968 for SD45s.
e. Nineteen units were sold to CRI&P in 1972 in trade for a like number of former CRI&P units that UP sent to EMD as trade-in for its 1972 order of SD40-2s.
f. Individual unit histories:
  Road
Number
First
Number
Second
Number
Third
Number
  UP 500 UP 1436 UP 1525  
  UP 501 UP 1562    
  UP 502 UP 1400A UP 1400 UP 1514
  UP 503 UP 1453 UP 1510  
  UP 504 UP 1442 UP 1527  
  UP 505 UP 1422A UP 1422 UP 1515
  UP 506 UP 1552    
  UP 507 UP 1406A UP 1406 UP 1517
  UP 508 UP 1557    
  UP 509 UP 1462 UP 1500  
  UP 510 UP 1431 UP 1513  
  UP 511 UP 1455 UP 1508  
  UP 512 UP 1551    
  UP 513 UP 1559    
  UP 514 UP 1452 UP 1511  
  UP 515 UP 1561    
  UP 516 UP 1554    
  UP 517 UP 1454 UP 1509  
  UP 518 UP 1411A UP 1411 UP 1518
  UP 519 UP 1443 UP 1528  
  UP 520 UP 1460 UP 1503  
  UP 521 UP 1424 UP 1524  
  UP 522 UP 1416A UP 1416 UP 1522
  UP 523 UP 1463 UP 1501  
  UP 524 UP 1458 UP 1505  
  UP 525 UP 1560    
  UP 526 UP 1423A UP 1423 UP 1523
  UP 527 UP 1414A UP 1414 UP 1520
  UP 528 UP 1451 UP 1512  
  UP 529 UP 1440 UP 1526  
  UP 530 UP 1456 UP 1507  
  UP 531 UP 1461 UP 1502  
  UP 532 UP 1556    
  UP 533 UP 1555    
  UP 534 UP 1415A UP 1415 UP 1521
  UP 535 UP 1550    
  UP 536 UP 1457 UP 1506  
  UP 537 UP 1558    
  UP 538 UP 1563    
  UP 539 UP 1412A UP 1412 UP 1519
  UP 540 UP 1408A UP 1408 UP 1516
         

EMD F9B -- 43 units
1750 horsepower; B-B trucks; 225,000 pounds operating weight

Road
Number
Previous
Number
Rebuild
Date
Builder
Date
Builder
Number
Date
Retired
Notes
UP 500B UP 1526B May 1958 Jan 1948 4661 Apr 1966 Traded to EMD in November 1966.
UP 501B UP 1516B May 1958 Sep 1948 6372 Jan 1968 Traded to EMD in January 1968.
UP 502B UP 1562B May 1958 Jan 1949 6743 Dec 1966 Traded to EMD in December 1966.
UP 503B UP 1526C Jun 1958 Oct 1947 4648 Dec 1966 Traded to EMD in December 1966.
UP 504B UP 1524C Jun 1958 Jan 1948 4664 Sep 1966 Traded to EMD in September 1966.
UP 505B UP 1502B Jun 1958 Apr 1948 6358 Oct 1966 Traded to EMD in October 1966.
UP 506B UP 1510B Jun 1958 Jul 1948 6366 Oct 1966 Traded to EMD in October 1966.
UP 507B UP 1556B Jul 1958 Dec 1948 6737 Oct 1966 Traded to EMD in October 1966.
UP 508B UP 1518C Jun 1958 Feb 1948 4670 Dec 1966 Traded to EMD in December 1966.
UP 509B UP 1550B Jun 1958 Oct 1948 6731 Feb 1972 Sold to CRI&P 4100 in February 1972.
UP 510B UP 1506B Jul 1958 Jul 1948 6362 Sep 1966 Traded to EMD in September 1966.
UP 511B UP 1554B Jul 1958 Nov 1948 6735 Nov 1966 Traded to EMD in November 1966.
UP 512B UP 1512C Jul 1958 Jul 1948 6369 Mar 1968 Traded to EMD in March 1968.
UP 513B UP 1524B Jul 1958 Jan 1948 4663 Nov 1966 Traded to EMD in November 1966.
UP 514B UP 1550C Jul 1958 Oct 1948 6732 Nov 1966 Traded to EMD in November 1966.
UP 515B UP 1556C Aug 1958 Dec 1948 6738 Nov 1966 Traded to EMD in November 1966.
UP 516B UP 1528C Aug 1958 Oct 1947 4650 Dec 1966 Traded to EMD in December 1966.
UP 517B UP 1528B Aug 1958 Oct 1947 4649 Feb 1972 Sold to CRI&P 4101 in February 1972.
UP 518B UP 1506C Aug 1958 Aug 1948 6363 Sep 1966 Traded to EMD in September 1966.
UP 519B UP 1518B Aug 1958 Mar 1948 4671 Sep 1966 Traded to EMD in September 1966.
UP 520B UP 1500B Sep 1958 Apr 1948 6356 Feb 1972 Sold to CRI&P 4102 in February 1972.
UP 521B UP 1558B Sep 1958 Dec 1948 6739 Jan 1968 Traded to EMD in January 1968.
UP 522B UP 1504B Sep 1958 May 1948 6360 Feb 1972 Sold to CRI&P 4103 in February 1972.
UP 523B UP 1522C Sep 1958 Jan 1948 4665 Feb 1972 Sold to CRI&P 4104 in February 1972.
UP 524B UP 1502C Sep 1958 Apr 1948 6359 Feb 1972 Sold to CRI&P 4105 in February 1972.
UP 525B UP 1500C Sep 1958 Apr 1948 6357 Apr 1968 Traded to EMD in April 1968.
UP 526B UP 1504C Oct 1958 May 1948 6361 Apr 1968 Traded to EMD in April 1968.
UP 527B UP 1508B Nov 1958 Jul 1948 6364 Aug 1970 Traded to EMD in August 1970.
UP 528B UP 1560B Jan 1959 Jan 1949 6741 Dec 1966 Traded to EMD in December 1966.
UP 529B UP 1522B Mar 1959 Feb 1948 4667 Mar 1968 Traded to EMD in March 1968.
UP 530B UP 1520C Oct 1958 Feb 1948 4668 Feb 1968 Traded to EMD in February 1968.
UP 531B UP 1552C Mar 1959 Nov 1948 6734 Feb 1972 Sold to CRI&P 4106 in February 1972.
UP 532B UP 1552B Feb 1959 Nov 1948 6733 Feb 1972 Sold to CRI&P 4107 in February 1972.
UP 533B UP 1520B Jan 1959 Feb 1948 4669 Oct 1966 Traded to EMD in October 1966.
UP 534B UP 1562C Dec 1958 Jan 1949 6744 Jan 1968 Traded to EMD in January 1968.
UP 535B UP 1560C Dec 1958 Jan 1949 6742 Nov 1966 Traded to EMD in November 1966.
UP 536B UP 1516C Nov 1958 Sep 1948 6373 Feb 1972 Sold to CRI&P 4108 in February 1972.
UP 537B UP 1514C Apr 1959 Sep 1948 6371 Jan 1968 Traded to EMD in January 1968.
UP 538B UP 1512B Jan 1959 Jul 1948 6368 Oct 1966 Traded to EMD in October 1966.
UP 539B UP 1510C Feb 1959 Jul 1948 6367 Feb 1972 Sold to CRI&P 4109 in February 1972.
UP 540B UP 1514B Mar 1959 Sep 1948 6370 Feb 1972 Sold to CRI&P 4110 in February 1972.
UP 541B UP 1508C Feb 1959 Sep 1948 6365 Oct 1966 Traded to EMD in October 1966.
UP 542B UP 1554C Sep 1958 Nov 1948 6736 Feb 1972 Sold to CRI&P 4111 in February 1972.

General Notes:

a. UP 500B-542B rebuilt by EMD at La Grange, Illinois, from UP 1500 and 1550 class F3Bs, originally built in 1947 and 1948.
b. Twenty-one units were traded to EMD in 1966 for SD40s, nine units were traded to EMD in 1968 for SD45s, and one unit (527B) was traded to EMD on the 1970 order for DDA40Xs.
c. Twelve units were sold to CRI&P in 1972 in trade for a like number of former CRI&P units that UP sent to EMD as trade-in for its 1972 order of SD40-2s.
d. Individual unit histories:
  Road
Number
First
Number
Second
Number
Third
Number
  UP 500B UP 1460B UP 1418B UP 1526B
  UP 501B UP 1458B UP 1516B  
  UP 502B UP 1562B    
  UP 503B UP 1447B UP 1404C UP 1526C
  UP 504B UP 1463B UP 1420C UP 1524C
  UP 505B UP 1444B UP 1502B  
  UP 506B UP 1452B UP 1510B  
  UP 507B UP 1556B    
  UP 508B UP 1426C UP 1518C  
  UP 509B UP 1550B    
  UP 510B UP 1448B UP 1506B  
  UP 511B UP 1554B    
  UP 512B UP 1454C UP 1512C  
  UP 513B UP 1462B UP 1420B UP 1524B
  UP 514B UP 1550C    
  UP 515B UP 1556C    
  UP 516B UP 1449B UP 1406C UP 1528C
  UP 517B UP 1448B UP 1406B UP 1528B
  UP 518B UP 1448C UP 1506C  
  UP 519B UP 1428B UP 1518B  
  UP 520B UP 1442B UP 1500B  
  UP 521B UP 1558B    
  UP 522B UP 1446B UP 1504B  
  UP 523B UP 1464B UP 1422B UP 1522C
  UP 524B UP 1444C UP 1502C  
  UP 525B UP 1442C UP 1500C  
  UP 526B UP 1446C UP 1504C  
  UP 527B UP 1450B UP 1508B  
  UP 528B UP 1560B    
  UP 529B UP 1424B UP 1522B  
  UP 530B UP 1424C UP 1520C  
  UP 531B UP 1552C    
  UP 532B UP 1552B    
  UP 533B UP 1426B UP 1520B  
  UP 534B UP 1562C    
  UP 535B UP 1560C    
  UP 536B UP 1458C UP 1516C  
  UP 537B UP 1456C UP 1514C  
  UP 538B UP 1454B UP 1512B  
  UP 539B UP 1452C UP 1510C  
  UP 540B UP 1456B UP 1514B  
  UP 541B UP 1450C UP 1508C  
  UP 542B UP 1554C    

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