Union Pacific Railroad
Roster of Diesel and Turbine Locomotives, 1934-2009
This page was last updated on February 15, 2014.
(Return to UP Diesel Roster Index Page)
Roster Listing
EMD SD40T-2 -- 74 units
3000 horsepower; C-C trucks; 410,000 pounds operating weight
Road Number |
Previous Number |
Builder Date |
Builder Number |
Date To 8639 Series |
Renumbered To |
Date Renumbered |
Date Retired |
Notes |
UP 8644 | SP 8356 | Jul 1974 | 73685-7 | 31 Jan 2000 | 16 Sep 2002 | |||
UP 8649 | UP 4379 | Jan 1978 | 776075-4 | 14 Aug 2000 | 27 Aug 2002 | |||
UP 8650 | SP 8361 | Feb 1978 | 776070-5 | 9 Jul 2001 | 10 Jul 2002 | |||
UP 8652 | SP 8363 | Feb 1978 | 776070-7 | 12 Sep 2001 | 10 Oct 2002 | |||
UP 8656 | SP 8527 | Dec 1978 | 786174-29 | 4 Jan 2000 | UP 2879 | 20 Jun 2001 | ||
UP 8661 | SP 8559 | Feb 1979 | 786174-61 | 27 Sep 2001 | 10 Jul 2002 | |||
UP 8663 | SP 8300 | Jun 1974 | 73629-1 | 26 Jun 2001 | 14 Aug 2002 | |||
UP 8664 | SP 8306 | Jul 1974 | 73629-7 | 29 Jul 2000 | 14 Aug 2002 | |||
UP 8670 | SP 8316 | Mar 1978 | 776069-10 | 12 Feb 2002 | 16 Sep 2002 | |||
UP 8678 | SP 8494 | Feb 1978 | 776068-6 | 20 Feb 2002 | 16 Sep 2002 | |||
UP 8679 | SP 8495 | Feb 1978 | 776068-7 | 15 Jul 2001 | 6 Aug 2002 | |||
UP 8683 | SP 8307 | Feb 1978 | 776069-1 | 7 Feb 2002 | 5 Dec 2008 | |||
UP 8684 | SP 8311 | Feb 1978 | 776069-5 | 13 Dec 1999 | UP 2902 | 13 Jun 2003 | 1 | |
UP 8687 | UP 4417 | Mar 1978 | 776069-13 | 23 Apr 2001 | 5 Dec 2008 | |||
UP 8689 | UP 4419 | Jan 1978 | 776075-2 | 7 Apr 2001 | UP 2780 | 16 Jan 2009 | ||
UP 8691 | SSW 8326 | Jan 1978 | 776075-5 | 27 Dec 1999 | UP 2903 | 6 Oct 2000 | ||
UP 8697 | UP 4427 | Apr 1978 | 776070-13 | 25 Feb 2000 | ||||
UP 8702 | UP 4432 | Feb 1978 | 776076-4 | 8 Jul 2001 | 5 Dec 2008 | |||
UP 8703 | SP 8499 | Nov 1978 | 786174-1 | 9 Oct 2002 | 31 Oct 2002 | |||
UP 8707 | SP 8504 | Nov 1978 | 786174-6 | 11 Oct 2001 | 15 May 2009 | |||
UP 8711 | UP 4441 | Nov 1978 | 786174-11 | 11 Aug 2001 | 24 Jan 2008 | |||
UP 8715 | SP 8514 | Nov 1978 | 786174-16 | 25 Sep 2001 | 24 Jan 2008 | |||
UP 8716 | SP 8515 | Nov 1978 | 786174-17 | 15 Nov 2001 | 29 Nov 2001 | |||
UP 8718 | SP 8518 | Nov 1978 | 786174-20 | 27 Jun 2001 | 31 Oct 2002 | |||
UP 8721 | SP 8521 | Dec 1978 | 786174-23 | 19 May 2002 | 27 May 2005 | |||
UP 8725 | UP 4455 | Dec 1978 | 786174-27 | 6 May 2001 | 26 Apr 2005 | |||
UP 8726 | SP 8526 | Dec 1978 | 786174-28 | 8 Nov 2001 | 17 Feb 2009 | |||
UP 8737 | UP 4467 | May 1979 | 786175-14 | 11 May 2000 | UP 2916 | 6 Jun 2001 | ||
UP 8745 | SP 8384 | Jun 1979 | 786201-8 | 30 Jun 2000 | 24 Jan 2008 | |||
UP 8748 | UP 4478 | Jun 1979 | 786201-12 | 11 Apr 2001 | 15 May 2009 | |||
UP 8751 | SP 8534 | Jan 1979 | 786174-36 | 10 Oct 2001 | 31 Jan 2003 | |||
UP 8755 | SP 8540 | Jan 1979 | 786174-42 | 18 Oct 2004 | 24 Jan 2008 | 2 | ||
UP 8756 | SP 8541 | Jan 1979 | 786174-43 | 24 May 2001 | 26 Dec 2001 | |||
UP 8759 | SP 8544 | Jan 1979 | 786174-46 | 19 Jul 2001 | 28 Feb 2002 | |||
UP 8766 | SP 8553 | Jan 1979 | 786174-55 | 18 Nov 2003 | 24 Jan 2008 | |||
UP 8767 | UP 4497 | Feb 1979 | 786174-56 | 30 May 2001 | 5 Dec 2008 | |||
UP 8777 | SP 8568 | Feb 1979 | 786174-70 | 22 Aug 2002 | 24 Jan 2008 | |||
UP 8782 | SP 8230 | Mar 1980 | 786265-1 | 12 Jul 2001 | 24 Jan 2008 | |||
UP 8784 | SP 8233 | Mar 1980 | 786265-4 | 20 Feb 2001 | 14 Apr 2004 | |||
UP 8785 | SP 8234 | Mar 1980 | 786265-5 | 13 Dec 2000 | 28 Feb 2005 | |||
UP 8786 | SP 8235 | Mar 1980 | 786265-6 | 18 Jan 2001 | 16 Jul 2007 | |||
UP 8788 | SP 8238 | Apr 1980 | 786265-9 | 17 Jul 2001 | ||||
UP 8789 | SP 8239 | Apr 1980 | 786265-10 | 22 Apr 2001 | 24 Jan 2008 | |||
UP 8793 | SP 8244 | Apr 1980 | 786265-15 | 20 Jun 2001 | 29 Nov 2001 | |||
UP 8794 | SP 8245 | Apr 1980 | 786265-16 | 28 Jun 2001 | 24 Jan 2008 | |||
UP 8795 | SP 8246 | Apr 1980 | 786265-17 | 28 Jul 2001 | 24 Jan 2008 | |||
UP 8798 | UP 4528 | Apr 1980 | 786265-24 | 20 Jun 2001 | ||||
UP 8799 | SP 8254 | Apr 1980 | 786265-25 | 26 Jul 2001 | 14 Nov 2007 | |||
UP 8800 | SP 8255 | Apr 1980 | 786265-26 | 13 Jul 2001 | 30 Dec 2004 | |||
UP 8801 | SP 8256 | Apr 1980 | 786265-27 | 7 Jul 2001 | 26 Dec 2001 | |||
UP 8802 | SP 8257 | May 1980 | 786265-28 | 29 Jun 2001 | 16 Jul 2007 | |||
UP 8803 | SP 8259 | May 1980 | 786265-30 | 21 Aug 2001 | 3 | |||
UP 8804 | SP 8261 | May 1980 | 786265-32 | 26 Sep 2003 | 14 Apr 2004 | |||
UP 8805 | SP 8262 | May 1980 | 786265-33 | 20 Dec 2001 | 24 Jan 2008 | |||
UP 8807 | SP 8267 | May 1980 | 786265-38 | 11 Mar 2002 | 19 Dec 2002 | |||
UP 8810 | SP 8271 | May 1980 | 786265-42 | 11 Oct 2001 | 24 Jan 2008 | |||
UP 8813 | SP 8276 | Jun 1980 | 786265-47 | 18 Oct 2001 | 30 Jan 2002 | |||
UP 8815 | SP 8279 | Jun 1980 | 786265-50 | 26 Jun 2001 | 15 Nov 2001 | |||
UP 8822 | SP 8287 | Jul 1980 | 786265-58 | 15 Jul 2001 | 30 Jan 2002 | |||
UP 8828 | SP 8297 | Jul 1980 | 786265-68 | 19 Dec 2000 | 22 Aug 2001 | |||
UP 8848 | SP 8567 | Feb 1979 | 786174-69 | 16 Jun 2001 | 30 Jan 2002 | |||
UP 8849 | SP 8573 | Mar 1979 | 786174-75 | 12 Oct 2001 | 30 Jan 2002 | |||
UP 8850 | SP 8232 | Mar 1980 | 786265-3 | 16 Jan 2001 | 14 Apr 2004 | |||
UP 8852 | SP 8241 | Apr 1980 | 786265-12 | 18 Aug 2001 | 24 Jan 2008 | 4 | ||
UP 8854 | SP 8248 | Apr 1980 | 786265-19 | 25 Aug 2001 | 19 Dec 2002 | |||
UP 8855 | SP 8249 | Apr 1980 | 786265-20 | 1 Aug 2001 | 29 Nov 2001 | |||
UP 8858 | SP 8263 | May 1980 | 786265-34 | 12 Dec 2000 | 29 Aug 2001 | |||
UP 8860 | SP 8266 | May 1980 | 786265-37 | 16 Mar 2001 | 24 Jan 2008 | |||
UP 8861 | SP 8269 | May 1980 | 786265-40 | 12 Jun 2001 | 14 Nov 2007 | |||
UP 8862 | UP 4592 | Jun 1980 | 786265-44 | 6 Jul 2000 | (UP 2939) | |||
UP 8864 | UP 4594 | Jun 1980 | 786265-55 | 16 Mar 2001 | 24 Jan 2008 | |||
UP 8865 | SP 8288 | Jul 1980 | 786265-59 | 7 Jul 2001 | 14 Apr 2004 | |||
UP 8867 | SP 8295 | Jul 1980 | 786265-66 | 21 Mar 2001 | 26 Dec 2001 | |||
UP 8868 | SP 8296 | Jul 1980 | 786265-67 | 30 Jul 2001 | 24 Jan 2008 |
General Notes:
- Original total of 239 SP/SSW units, numbered SP 8230-8321, SSW 8322-8326, SP 8327-8341, 8350-8371, SSW 8372-8376, SP 8377-8391, and 8489-8573; 231 units went to UP at merger; SP retired eight units (SP 8260, 8278, 8302, 8317, 8320, 8338, 8502, and 8507) prior to the merger.
- Of the original 239 SP/SSW units, 84 units were fitted with extended noses, 80 of those 84 units went to UP at merger (SP retired four units prior to the merger); the 80 units to UP include UP 8639-8654 (16 units), 8663-8673 (11 units), 8682-8702 (21 units), 8730-8750 (21 units), 8830-8832 (three units), and 8838-8845 (eight units); all 80 units were part of the original SP orders in 1974 and 1978-1979 (SP 8300-8341 and 8350-8391) for 84 units (42 pairs) that were equipped to operate in radio-controlled mid-train helper service; 14 units (ex SP/SSW 8300-8306 and 8350-8356) are fitted with 116-inch extended noses; 70 units (ex SP/SSW 8307-8341 and 8557-8391) are fitted with 123-inch extended noses.
- Renumbered to UP out of SP/SSW sequence due to different ownership and lease arrangements.
- All 231 units assigned UP 4369-4599 in September 1997, 66 units renumbered; assigned UP 8639-8869 in December 1999; 75 units renumbered (four refurbished and renumbered to 2866 series), 95 units retired prior to being renumbered to UP numbers; 62 units were refurbished in 1997-2000, and assigned numbers in 2866-2949 group in August 2000, along with 22 refurbished former D&RGW units.
- UP's model designation for these units is SD40-2T; refurbished units were called SD40-2TR.
- Individual unit histories:
- The following 99 SP/SSW units (of the original 231 units to UP at merger in September 1996) were assigned numbers in the UP 4369-4599 group, then the UP 8639-8869 group, but were retired by UP prior to being renumbered:
Road Number |
First Number |
Second Number |
Date Renumbered |
|
UP 8644 | SP 8356 | |||
UP 8649 | SP 8325 | UP 4379 | 23 Apr 1999 | |
UP 8650 | SP 8361 | |||
UP 8652 | SP 8363 | |||
UP 8656 | SP 8527 | |||
UP 8661 | SP 8559 | |||
UP 8663 | SP 8300 | |||
UP 8664 | SP 8306 | |||
UP 8670 | SP 8316 | |||
UP 8678 | SP 8494 | |||
UP 8679 | SP 8495 | |||
UP 8683 | SP 8307 | |||
UP 8684 | SP 8311 | |||
UP 8687 | SP 8319 | UP 4417 | 21 May 1998 | |
UP 8689 | SSW 8323 | UP 4419 | 18 Nov 1997 | |
UP 8691 | SSW 8326 | |||
UP 8697 | SP 8369 | UP 4427 | 23 Jul 1997 | |
UP 8702 | SSW 8375 | UP 4432 | 29 May 1998 | |
UP 8703 | SP 8499 | |||
UP 8707 | SP 8504 | |||
UP 8711 | SP 8509 | UP 4441 | 14 Oct 1997 | |
UP 8715 | SP 8514 | |||
UP 8716 | SP 8515 | |||
UP 8718 | SP 8518 | |||
UP 8721 | SP 8521 | |||
UP 8725 | SP 8525 | UP 4455 | 23 Nov 1997 | |
UP 8726 | SP 8526 | |||
UP 8737 | SP 8340 | UP 4467 | 22 Jan 1998 | |
UP 8745 | SP 8384 | |||
UP 8748 | SP 8388 | UP 4478 | 14 Dec 1998 | |
UP 8751 | SP 8534 | |||
UP 8755 | SP 8540 | |||
UP 8756 | SP 8541 | |||
UP 8759 | SP 8544 | |||
UP 8766 | SP 8553 | |||
UP 8767 | SP 8554 | UP 4497 | 28 Jul 1997 | |
UP 8777 | SP 8568 | |||
UP 8782 | SP 8230 | |||
UP 8784 | SP 8233 | |||
UP 8785 | SP 8234 | |||
UP 8786 | SP 8235 | |||
UP 8788 | SP 8238 | |||
UP 8789 | SP 8239 | |||
UP 8793 | SP 8244 | |||
UP 8794 | SP 8245 | |||
UP 8795 | SP 8246 | |||
UP 8798 | SP 8253 | UP 4528 | 12 Jun 1998 | |
UP 8799 | SP 8254 | |||
UP 8800 | SP 8255 | |||
UP 8801 | SP 8256 | |||
UP 8802 | SP 8257 | |||
UP 8803 | SP 8259 | |||
UP 8804 | SP 8261 | |||
UP 8805 | SP 8262 | |||
UP 8807 | SP 8267 | |||
UP 8810 | SP 8271 | |||
UP 8813 | SP 8276 | |||
UP 8815 | SP 8279 | |||
UP 8819 | SP 8283 | |||
UP 8822 | SP 8287 | |||
UP 8828 | SP 8297 | |||
UP 8848 | SP 8567 | |||
UP 8849 | SP 8573 | |||
UP 8850 | SP 8232 | |||
UP 8852 | SP 8241 | |||
UP 8854 | SP 8248 | |||
UP 8855 | SP 8249 | |||
UP 8858 | SP 8263 | |||
UP 8860 | SP 8266 | |||
UP 8861 | SP 8269 | |||
UP 8862 | SP 8273 | UP 4592 | 14 May 1999 | |
UP 8864 | SP 8284 | UP 4594 | 13 May 1998 | |
UP 8865 | SP 8288 | |||
UP 8867 | SP 8295 | |||
UP 8868 | SP 8296 |
SP/SSW Number |
Assigned UP Number |
Builder Date |
Builder Number |
Date Retired |
Notes | |
SP 8231 | UP 8783 | Mar 1980 | 786265-2 | 31 Oct 2002 | ||
SP 8236 | UP 8851 | Mar 1980 | 786265-7 | 19 Dec 2001 | ||
SP 8240 | UP 8790 | Apr 1980 | 786265-11 | 10 Oct 2003 | ||
SP 8242 | UP 8791 | Apr 1980 | 786265-13 | 19 Dec 2000 | ||
SP 8247 | UP 8853 | Apr 1980 | 786265-18 | 27 Jun 2000 | ||
SP 8250 | UP 8796 | Apr 1980 | 786265-21 | 27 Jun 2000 | ||
SP 8251 | UP 8797 | Apr 1980 | 786265-22 | 28 Nov 2001 | ||
SP 8258 | UP 8857 | May 1980 | 786265-29 | 22 Aug 2001 | ||
SP 8265 | UP 8806 | May 1980 | 786265-36 | 23 May 2001 | ||
SP 8270 | UP 8809 | May 1980 | 786265-41 | 19 Apr 2001 | ||
SP 8272 | UP 8811 | Jun 1980 | 786265-43 | 28 Nov 2001 | ||
SP 8275 | UP 8812 | Jun 1980 | 786265-46 | 5 Dec 2003 | 5 | |
SP 8277 | UP 8814 | Jun 1980 | 786265-48 | 18 Jun 2001 | ||
SP 8281 | UP 8817 | Jun 1980 | 786265-52 | 19 Apr 2001 | ||
SP 8283 | UP 8819 | Jun 1980 | 786265-54 | 24 Jan 2008 | 6 | |
SP 8292 | UP 8826 | Jul 1980 | 786265-63 | 19 Dec 2002 | ||
SP 8293 | UP 8827 | Jul 1980 | 786265-64 | 24 Jan 2008 | 7 | |
SP 8299 | UP 8869 | Jul 1980 | 786265-70 | 20 Jun 2000 | ||
SP 8308 | UP 8668 | Feb 1978 | 776069-2 | 31 Jul 2002 | ||
SP 8309 | UP 8645 | Feb 1978 | 776069-3 | 27 Aug 2002 | ||
SP 8310 | UP 8669 | Feb 1978 | 776069-4 | 16 Sep 2002 | ||
SP 8312 | UP 8646 | Feb 1978 | 776069-6 | 14 Aug 2002 | ||
SP 8313 | UP 8647 | Feb 1978 | 776069-7 | 27 Aug 2002 | ||
SP 8314 | UP 8831 | Feb 1978 | 776069-8 | 21 Nov 2000 | ||
SP 8315 | UP 8685 | Mar 1978 | 776069-9 | 17 Jan 2001 | ||
SP 8318 | UP 8686 | Mar 1978 | 776069-12 | 31 Jul 2001 | ||
SP 8321 | UP 8688 | Apr 1978 | 776069-15 | 20 Jun 2001 | ||
SP 8322 | UP 8648 | Jan 1978 | 776075-1 | 16 Sep 2002 | ||
SSW 8324 | UP 8690 | Jan 1978 | 776075-3 | 26 Sep 2001 | ||
SP 8327 | UP 8838 | Mar 1979 | 786175-1 | 17 Jan 2001 | ||
SP 8328 | UP 8730 | Mar 1979 | 786175-2 | 17 Jul 2001 | ||
SP 8329 | UP 8731 | Mar 1979 | 786175-3 | 28 Dec 2000 | ||
SP 8331 | UP 8839 | Apr 1979 | 786175-5 | 26 Jan 2000 | ||
SP 8335 | UP 8735 | Apr 1979 | 786175-9 | 23 May 2001 | ||
SP 8336 | UP 8841 | Apr 1979 | 786175-10 | 19 Dec 2001 | ||
SP 8337 | UP 8736 | Apr 1979 | 786175-11 | 19 Dec 2000 | ||
SP 8350 | UP 8642 | Jun 1974 | 73685-1 | 27 Aug 2002 | ||
SP 8352 | UP 8666 | Jun 1974 | 73685-3 | 16 Sep 2002 | ||
SP 8354 | UP 8682 | Jun 1974 | 73685-5 | 19 Dec 2000 | ||
SP 8355 | UP 8643 | Jun 1974 | 73685-6 | 6 Aug 2002 | ||
SP 8358 | UP 8693 | Feb 1978 | 776070-2 | 28 Jun 2001 | ||
SP 8359 | UP 8671 | Feb 1978 | 776070-3 | 14 Aug 2002 | ||
SP 8360 | UP 8694 | Feb 1978 | 776070-4 | 25 Feb 2000 | ||
SP 8362 | UP 8651 | Feb 1978 | 776070-6 | 10 Jul 2002 | ||
SP 8367 | UP 8654 | Mar 1978 | 776070-11 | 10 Jul 2002 | ||
SP 8368 | UP 8696 | Apr 1978 | 776070-12 | 31 Jul 2001 | ||
SP 8370 | UP 8698 | Apr 1978 | 776070-14 | 28 Feb 2002 | ||
SSW 8372 | UP 8700 | Jan 1978 | 776076-1 | 18 Apr 2000 | ||
SSW 8374 | UP 8832 | Jan 1978 | 776076-3 | 17 Jan 2001 | ||
SP 8377 | UP 8738 | May 1979 | 786201-1 | 28 Dec 2000 | ||
SP 8378 | UP 8739 | May 1979 | 786201-2 | 18 Jun 2001 | ||
SP 8382 | UP 8743 | May 1979 | 786201-6 | 29 Aug 2001 | ||
SP 8386 | UP 8747 | Jun 1979 | 786201-10 | 23 May 2001 | ||
SP 8387 | UP 8844 | Jun 1979 | 786201-11 | 27 Feb 2001 | ||
SP 8390 | UP 8750 | Jun 1979 | 786201-14 | 26 Sep 2001 | ||
SP 8391 | UP 8845 | Jun 1979 | 786201-15 | 30 Nov 1999 | ||
SP 8492 | UP 8676 | Feb 1978 | 776068-4 | 10 Jul 2002 | ||
SP 8496 | UP 8680 | Feb 1978 | 776068-8 | 16 Sep 2002 | ||
SP 8497 | UP 8681 | Jan 1978 | 776068-9 | 10 Jul 2002 | ||
SP 8498 | UP 8833 | Jan 1978 | 776068-10 | 31 Jul 2001 | ||
SP 8500 | UP 8704 | Nov 1978 | 786174-2 | 12 Jul 2001 | ||
SP 8503 | UP 8706 | Nov 1978 | 786174-5 | 31 Oct 2002 | ||
SP 8505 | UP 8708 | Nov 1978 | 786174-7 | 23 May 2001 | ||
SP 8506 | UP 8709 | Nov 1978 | 786174-8 | 17 Mar 2000 | ||
SP 8508 | UP 8710 | Nov 1978 | 786174-10 | 26 Jan 2000 | ||
SP 8510 | UP 8712 | Nov 1978 | 786174-12 | 15 Jul 2002 | ||
SP 8513 | UP 8834 | Nov 1978 | 786174-15 | 4 Dec 1997 | 8 | |
SP 8516 | UP 8835 | Nov 1978 | 786174-18 | 23 May 2001 | ||
SP 8517 | UP 8717 | Nov 1978 | 786174-19 | 23 May 2001 | ||
SP 8519 | UP 8719 | Dec 1978 | 786174-21 | 23 May 2001 | ||
SP 8520 | UP 8720 | Dec 1978 | 786174-22 | 18 Jun 2001 | ||
SP 8522 | UP 8722 | Dec 1978 | 786174-24 | 19 Dec 2000 | ||
SP 8523 | UP 8723 | Dec 1978 | 786174-25 | 7 Feb 2001 | ||
SP 8524 | UP 8724 | Dec 1978 | 786174-26 | 19 Dec 2001 | ||
SP 8528 | UP 8657 | Dec 1978 | 786174-30 | 27 Aug 2002 | ||
SP 8529 | UP 8727 | Dec 1978 | 786174-31 | 30 Nov 2002 | ||
SP 8530 | UP 8836 | Dec 1978 | 786174-32 | 19 Apr 2001 | ||
SP 8531 | UP 8728 | Dec 1978 | 786174-33 | 21 Jan 2002 | ||
SP 8532 | UP 8729 | Dec 1978 | 786174-34 | 15 Nov 2001 | ||
SP 8533 | UP 8837 | Dec 1978 | 786174-35 | 28 Nov 2001 | ||
SP 8536 | UP 8847 | Jan 1979 | 786174-38 | 23 May 2001 | ||
SP 8537 | UP 8752 | Jan 1979 | 786174-39 | 22 Aug 2001 | ||
SP 8539 | UP 8754 | Jan 1979 | 786174-41 | 12 Oct 2000 | ||
SP 8542 | UP 8757 | Jan 1979 | 786174-44 | 27 Feb 2001 | ||
SP 8543 | UP 8758 | Jan 1979 | 786174-45 | 29 Jan 2001 | ||
SP 8546 | UP 8761 | Jan 1979 | 786174-48 | 22 Aug 2001 | ||
SP 8547 | UP 8762 | Jan 1979 | 786174-49 | 19 Dec 2001 | ||
SP 8548 | UP 8658 | Jan 1979 | 786174-50 | 6 Aug 2002 | ||
SP 8550 | UP 8763 | Jan 1979 | 786174-52 | 23 May 2001 | ||
SP 8556 | UP 8769 | Feb 1979 | 786174-58 | 10 Jul 2002 | 9 | |
SP 8557 | UP 8660 | Feb 1979 | 786174-59 | 28 Feb 2002 | 10 | |
SP 8560 | UP 8662 | Feb 1979 | 786174-62 | 6 Aug 2002 | ||
SP 8564 | Feb 1979 | 786174-66 | 15 Nov 2001 | |||
SP 8565 | Feb 1979 | 786174-67 | 22 Aug 2001 | |||
SP 8566 | UP 8776 | Feb 1979 | 786174-68 | 31 Jan 2003 | ||
SP 8569 | Feb 1979 | 786174-71 | 7 Feb 2001 | |||
SP 8570 | Feb 1979 | 786174-72 | 27 Apr 2001 | |||
SP 8571 | UP 8780 | Feb 1979 | 786174-73 | 31 Oct 2002 | ||
SP 8572 | Feb 1979 | 786174-74 | 12 Oct 2000 |
Notes:
- UP 8684 (ex SP 8311) was the first unit in this group to be repainted to this number series, completed on 13 December 1999.
- UP 8755 (ex SP 8540) was donated to San Antonio (Texas) Fire Department Training Academy; moved during early June 2009. (update from Dave Sunderland via email, June 14, 2009)
- UP 8803 (ex SP 8259) was painted in full UP yellow and gray, completed on 21 September 2006. (information from Jim Haguewood)
- UP 8852 (ex SP 8241) was previously shown (due to a clerical error) as retired on 19 December 2001; still in service as of 11 June 2006; retired in late January 2008.
- SP 8275 (assigned UP 8812) was renumbered to UP 7906 on 3 December 2003 by Progress Rail as part of the Peak Power fleet .
- SP 8283 (assigned UP 4549, then UP 8819) arrived at Roseville, California, on June 3, 2006; as of November 2007, the unit was still active and not retired, but is in dead storage at Roseville, with parts missing.
- SP 8293 (assigned UP 8827) was removed from service at South Morrill, Nebraska, on 8 November 2004 due to diesel engine failure; stored at Progress Rail at South Morrill until moved to North Platte, Nebraska, on 8 October 2005; moved to Denver, Colorado, still there as of mid September 2007; retired in late January 2008.
- SP 8513 (assigned UP 8834) was wrecked on 25 October 1997 at West Junction (Houston), Texas, scrapped at wreck site.
- SP 8556 (assigned UP 8769) was retired by UP on 26 April 2002 and sold to Helm Financial to replace wrecked SP 8557, leased from Helm Financial; still in UP operational fleet (see Note 9, below).
- SP 8557 (assigned UP 8660) was wrecked on 2 January 2002 at Broadmoor, Illinois; retired due to wreck damage; retired and replaced as a Helm-leased unit by SP 8556 (see Note 8, above).
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