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Union Pacific Railroad

Roster of Diesel and Turbine Locomotives, 1934-2009

This page was last updated on April 4, 2013.

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Roster Listing

GE C44AC (AC4400CW) -- 150 units
4400 horsepower; C-C trucks; 412,000 pounds operating weight

Road
Number
Builder
Number
Builder
Date
Date
Delivered
Date
Retired
Notes
UP 6550 49788   21 Mar 1997    
UP 6551 49789   21 Mar 1997    
UP 6552 49790   21 Mar 1997    
UP 6553 49791   21 Mar 1997    
UP 6554 49792 Mar 1997 21 Mar 1997    
UP 6555 49793   21 Mar 1997    
UP 6556 49794   21 Mar 1997    
UP 6557 49795   21 Mar 1997    
UP 6558 49796   21 Mar 1997    
UP 6559 49797   21 Mar 1997    
UP 6560 49798   31 Mar 1997    
UP 6561 49799   24 Mar 1997    
UP 6562 49800 Mar 1997 24 Mar 1997    
UP 6563 49801 Mar 1997 24 Mar 1997    
UP 6564 49802   24 Mar 1997    
UP 6565 49803   24 Mar 1997    
UP 6566 49804   24 Mar 1997    
UP 6567 49805   21 Mar 1997    
UP 6568 49806   21 Mar 1997    
UP 6569 49807   21 Mar 1997    
UP 6570 49808   7 Apr 1997    
UP 6571 49809   7 Apr 1997    
UP 6572 49810   19 Apr 1997    
UP 6573 49811   19 Apr 1997    
UP 6574 49812   21 Apr 1997    
UP 6575 49813   12 May 1997    
UP 6576 49814   21 Apr 1997    
UP 6577 49815   1 May 1997    
UP 6578 49816   28 Apr 1997    
UP 6579 49817   28 Apr 1997    
UP 6580 49818   29 Apr 1997    
UP 6581 49819   29 Apr 1997    
UP 6582 49820 Apr 1997 1 May 1997    
UP 6583 49821 Apr 1997 5 May 1997    
UP 6584 49822 Apr 1997 5 May 1997    
UP 6585 49823   7 May 1997    
UP 6586 49824   5 May 1997    
UP 6587 49825   7 May 1997    
UP 6588 49826   7 May 1997    
UP 6589 49827   9 May 1997    
UP 6590 49828 Apr 1997 9 May 1997    
UP 6591 49829   11 May 1997    
UP 6592 49830 Apr 1997 11 May 1997    
UP 6593 49831 Apr 1997 12 May 1997    
UP 6594 49832   12 May 1997    
UP 6595 49833 Apr 1997 12 May 1997    
UP 6596 49834 Apr 1997 2 Jun 1997    
UP 6597 49835   16 May 1997    
UP 6598 49836 Apr 1997 19 May 1997    
UP 6599 49837   16 May 1997    
UP 6600 49838 Apr 1997 16 May 1997    
UP 6601 49839   19 May 1997    
UP 6602 49840   19 May 1997    
UP 6603 49841   19 May 1997    
UP 6604 49842   19 May 1997    
UP 6605 49843   25 May 1997    
UP 6606 49844   28 May 1997    
UP 6607 49845   23 May 1997    
UP 6608 49846   23 May 1997    
UP 6609 49847   25 May 1997    
UP 6610 49848   25 May 1997    
UP 6611 49849 May 1997 28 May 1997    
UP 6612 49850 May 1997 28 May 1997    
UP 6613 49851   1 Jun 1997    
UP 6614 49852   2 Jun 1997    
UP 6615 49853 May 1997 1 Jun 1997    
UP 6616 49854   1 Jun 1997    
UP 6617 49855   1 Jun 1997    
UP 6618 49856   2 Jun 1997    
UP 6619 49857   2 Jun 1997    
UP 6620 49858 May 1997 3 Jun 1997    
UP 6621 49859   2 Jun 1997    
UP 6622 49860   3 Jun 1997    
UP 6623 49861   4 Jun 1997    
UP 6624 49862 May 1997 7 Jun 1997    
UP 6625 49863 May 1997 9 Jun 1997    
UP 6626 49864   7 Jun 1997    
UP 6627 49865   7 Jun 1997    
UP 6628 49866   25 Jun 1997    
UP 6629 49867   11 Jun 1997    
UP 6630 49868   9 Jun 1997    
UP 6631 49869   8 Jun 1997    
UP 6632 49870 May 1997 11 Jun 1997    
UP 6633 49871 Apr 1997 9 Jun 1997    
UP 6634 49872   8 Jun 1997    
UP 6635 49873 Jun 1997 8 Jun 1997    
UP 6636 49874   14 Jun 1997    
UP 6637 49875   12 Jun 1997    
UP 6638 49876   12 Jun 1997    
UP 6639 49877   14 Jun 1997    
UP 6640 49878   14 Jun 1997    
UP 6641 49879   14 Jun 1997    
UP 6642 49880   19 Jun 1997    
UP 6643 49881   14 Jun 1997    
UP 6644 49882   14 Jun 1997    
UP 6645 49883   19 Jun 1997    
UP 6646 49884   17 Jun 1997 3 Jan 2002 1
UP 6647 49885   16 Jun 1997    
UP 6648 49886 Jun 1997 16 Jun 1997    
UP 6649 49887 Jun 1997 18 Jun 1997    
UP 6650 49888 Jun 1997 20 Jun 1997    
UP 6651 49889 Jun 1997 23 Jun 1997    
UP 6652 49890 Jun 1997 22 Jun 1997    
UP 6653 49891 Jun 1997 21 Jun 1997    
UP 6654 49892 Jun 1997 22 Jun 1997    
UP 6655 49893   21 Jun 1997    
UP 6656 49894 Jul 1997 24 Jun 1997    
UP 6657 49895 Jul 1997 24 Jun 1997    
UP 6658 49896 Jul 1997 23 Jun 1997    
UP 6659 49897   25 Jun 1997    
UP 6660 49898 Jul 1997 28 Jun 1997    
UP 6661 49899 Jul 1997 29 Jun 1997    
UP 6662 49900 Jul 1997 30 Jun 1997    
UP 6663 49901 Jul 1997 29 Jun 1997    
UP 6664 49902 Jun 1997 29 Jun 1997    
UP 6665 49903 Jun 1997 29 Jun 1997    
UP 6666 49904 Jun 1997 29 Jun 1997   2
UP 6667 49905 Jul 1997 29 Jun 1997    
UP 6668 49906 Jun 1997 29 Jun 1997    
UP 6669 49907   29 Jun 1997    
UP 6670 49908   16 Jul 1997    
UP 6671 49909   7 Jul 1997    
UP 6672 49910   8 Jul 1997    
UP 6673 49911   7 Jul 1997    
UP 6674 49912   16 Jul 1997    
UP 6675 49913   21 Jul 1997    
UP 6676 49914   15 Jul 1997    
UP 6677 49915   15 Jul 1997    
UP 6678 49916 Jul 1997 15 Jul 1997    
UP 6679 49917   15 Jul 1997    
UP 6680 49918   9 Aug 1997    
UP 6681 49919   22 Jul 1997    
UP 6682 49920   22 Jul 1997    
UP 6683 49921 Jul 1997 11 Aug 1997    
UP 6684 49922 Jul 1997 21 Jul 1997    
UP 6685 49923   11 Aug 1997    
UP 6686 49924   11 Aug 1997    
UP 6687 49925 Aug 1997 9 Aug 1997    
UP 6688 49926   11 Aug 1997    
UP 6689 49927   12 Aug 1997    
UP 6690 49928 Aug 1997 12 Aug 1997    
UP 6691 49929   12 Aug 1997    
UP 6692 49930   18 Aug 1997    
UP 6693 49931   18 Aug 1997    
UP 6694 49932   29 Aug 1997    
UP 6695 49933 Aug 1997 27 Aug 1997    
UP 6696 49934   27 Aug 1997    
UP 6697 49935   29 Aug 1997    
UP 6698 49936   31 Aug 1997    
UP 6699 49937   31 Aug 1997    

General Notes:

a. UP's designation for these units is C44AC; GE's designation is AC4400CW.
b. UP 6680 was to 1,000th GE locomotive with AC technology, unveiled at a ceremony at GE's Erie, Pa., plant on August 6, 1997. (RailNews, Issue 407, October 1997, page 4)

Notes:

1. UP 6646 was wrecked (along with UP 8025 and 8088) on 14 December 2001 at Pacific, Missouri; all three units retired due to wreck damage.
2. UP 6666 was wrecked on 12 September 1998 at Shawnee Junction, Wyoming; moved to Coast Engine & Equipment Co., Tacoma, Washington, for wreck damage repairs in February 1999; repairs completed and returned to service on 12 August 1999.
   

GE C44AC (AC4400CW) -- 3 units
4400 horsepower; C-C trucks; 416,000 pounds operating weight

Road
Number
First
Number
Builder
Number
Builder
Date
Date
Delivered
Date To
6700 Series
Notes
UP 6700 UP 9997 47634   Nov 1994 24 Apr 2004  
UP 6701 UP 9998 47635   Nov 1994 23 Jul 1999 1
UP 6702 UP 9999 47636 Oct 1994 Oct 1994 15 Dec 2000 2

General Note:

a. UP's designation for these units is C44AC; GE's designation is AC4400CW.

Notes:

1. UP 6701, as UP 9998, was wrecked on 12 September 1998 at Shawnee Junction, Wyoming; moved to Coast Engine & Equipment Co., Tacoma, Washington, for wreck damage repairs in February 1999; returned to service as UP 6701 on 23 July 1999.
2. UP 6702 was plate-checked on 8 November 2005 and the builder's date has been changed from October 1994 to November 1994. (information from Norm Metcalf)
   

GE C44AC (AC4400CW) -- 35 units
4400 horsepower; C-C trucks; 415,000 pounds operating weight

Road
Number
First
Number
Builder
Number
Builder
Date
Date
Delivered
Date To
UP Number
Notes
UP 6703 C&NW 8801 48169   Nov 1994 7 Nov 2003  
UP 6704 C&NW 8802 48170   Nov 1994 11 Apr 2003  
UP 6705 C&NW 8803 48171   Nov 1994 6 Mar 2003  
UP 6706 C&NW 8804 48172   Nov 1994 15 May 2003  
UP 6707 C&NW 8805 48173   Nov 1994 15 Jun 2001  
UP 6708 C&NW 8806 48174 Nov 1994 Nov 1994 16 Jun 2003 1
UP 6709 C&NW 8807 48175   Nov 1994 27 Feb 2003  
UP 6710 C&NW 8808 48176 Nov 1994 Nov 1994 25 Oct 2003  
UP 6711 C&NW 8809 48177   Nov 1994 9 Apr 2003  
UP 6712 C&NW 8810 48178   Nov 1994 20 Jun 2003  
UP 6713 C&NW 8811 48179   Nov 1994 5 Nov 2003  
UP 6714 C&NW 8812 48180   Nov 1994 27 Aug 2001  
UP 6715 C&NW 8813 48181   Nov 1994 29 Mar 2003  
UP 6716 C&NW 8814 48182   Nov 1994 29 Mar 2003  
UP 6717 C&NW 8815 48183   Nov 1994 1 May 2003  
UP 6718 C&NW 8816 48184   Nov 1994 5 Dec 2003  
UP 6719 C&NW 8817 48185   Nov 1994 14 Mar 2003  
UP 6720 C&NW 8818 48186   Nov 1994 8 Mar 2003  
UP 6721 C&NW 8819 48187   Dec 1994 16 Sep 2003  
UP 6722 C&NW 8820 48188 Dec 1994 Dec 1994 2 Mar 2004 1
UP 6723 C&NW 8821 48189   Dec 1994 24 Jun 2003  
UP 6724 C&NW 8822 48190   Dec 1994 17 Jul 1996  
UP 6725 C&NW 8823 48191   Dec 1994 19 Feb 2003  
UP 6726 C&NW 8824 48192   Dec 1994 28 May 2004  
UP 6727 C&NW 8825 48193   Dec 1994 19 Feb 2003  
UP 6728 C&NW 8826 48194   Dec 1994 30 Jan 2003  
UP 6729 C&NW 8827 48195   Dec 1994 24 Mar 2003  
UP 6730 C&NW 8828 48196   Dec 1994 2 Aug 2005  
UP 6731 C&NW 8829 48197   Dec 1994 30 Jul 2004  
UP 6732 C&NW 8830 48198   Dec 1994 15 Jul 2003  
UP 6733 C&NW 8831 48199   Dec 1994 18 Nov 2003  
UP 6734 C&NW 8832 48200   Dec 1994 13 Feb 2004  
UP 6735 C&NW 8833 48201   Dec 1994 16 Sep 2001  
UP 6736 C&NW 8834 48202   Dec 1994 16 Sep 1996 1
UP 6737 C&NW 8835 48203   Dec 1994 18 Mar 2003 1

General Notes:

a. Total of 35 C&NW units went to UP at merger, numbered C&NW 8801-8835.
b. UP 6736 has builder's number 48200, which matches ex C&NW 8832.
c. Equipped with Automatic Train Control (ATC) for operation along former C&NW lines.
d. UP's designation for these units is C44AC; GE's designation is AC4400CW.
e. UP 6724 (ex C&NW 8822) was the first of this group to be repainted to Union Pacific, completed on 17 July 1996; UP 6730 (ex C&NW 8828) was the last, completed on 2 August 2005.

Note:

1. C&NW Operation Lifesaver units include UP 6708 (ex C&NW 8806), 6722 (ex C&NW 8820), 6736 (ex C&NW 8834), and 6737 (ex C&NW 8835). (information from Norm Metcalf)
   

GE C44AC (AC4400CW) -- 150 units
4400 horsepower; C-C trucks; 415,000 pounds operating weight

Road
Number
Builder
Number
Builder
Date
Date
Delivered
Notes
UP 6738 49185   14 Mar 1996  
UP 6739 49186   14 Mar 1996  
UP 6740 49187 Mar 1996 18 Mar 1996  
UP 6741 49188 Mar 1996 18 Mar 1996  
UP 6742 49189   17 Mar 1996  
UP 6743 49190   17 Mar 1996  
UP 6744 49191 Mar 1996 20 Mar 1996  
UP 6745 49192   19 Mar 1996  
UP 6746 49193 Mar 1996 19 Mar 1996  
UP 6747 49194 Mar 1996 20 Mar 1996  
UP 6748 49195 Mar 1996 25 Mar 1996 1
UP 6749 49196 Mar 1996 26 Mar 1996  
UP 6750 49197 Mar 1996 26 Mar 1996  
UP 6751 49198 Mar 1996 25 Mar 1996  
UP 6752 49199   28 Mar 1996  
UP 6753 49200   28 Mar 1996  
UP 6754 49201 Mar 1996 29 Mar 1996  
UP 6755 49202   29 Mar 1996  
UP 6756 49203   1 Apr 1996  
UP 6757 49204 Mar 1996 1 Apr 1996  
UP 6758 49205   12 May 1996  
UP 6759 49206 Apr 1996 12 May 1996  
UP 6760 49207 Apr 1996 12 May 1996  
UP 6761 49208 Apr 1996 12 May 1996  
UP 6762 49209   12 May 1996  
UP 6763 49210   12 May 1996  
UP 6764 49211 May 1996 12 May 1996  
UP 6765 49212 May 1996 12 May 1996  
UP 6766 49213   13 May 1996  
UP 6767 49214   13 May 1996  
UP 6768 49215   12 May 1996  
UP 6769 49216   13 May 1996  
UP 6770 49217   13 May 1996  
UP 6771 49218   13 May 1996  
UP 6772 49219   19 May 1996  
UP 6773 49220   19 May 1996  
UP 6774 49221   18 May 1996  
UP 6775 49222 May 1996 19 May 1996  
UP 6776 49223 May 1996 18 May 1996  
UP 6777 49224   18 May 1996  
UP 6778 49225   18 May 1996  
UP 6779 49226   18 May 1996  
UP 6780 49227   20 May 1996  
UP 6781 49228   22 May 1996  
UP 6782 49229   18 May 1996  
UP 6783 49230 May 1996 20 May 1996  
UP 6784 49231   20 May 1996  
UP 6785 49232   20 May 1996  
UP 6786 49233   22 May 1996  
UP 6787 49234   24 May 1996  
UP 6788 49235   24 May 1996  
UP 6789 49236 May 1996 25 May 1996  
UP 6790 49237 May 1996 25 May 1996  
UP 6791 49238   27 May 1996  
UP 6792 49239 May 1996 27 May 1996  
UP 6793 49240 May 1996 26 May 1996  
UP 6794 49241   27 May 1996  
UP 6795 49242   26 May 1996  
UP 6796 49243   26 May 1996  
UP 6797 49244 May 1996 13 May 1996  
UP 6798 49245   31 May 1996  
UP 6799 49246   3 Jun 1996  
UP 6800 49247   3 Jun 1996  
UP 6801 49248   3 Jun 1996  
UP 6802 49249   3 Jun 1996  
UP 6803 49250   3 Jun 1996  
UP 6804 49251 Jun 1996 7 Jun 1996  
UP 6805 49252   7 Jun 1996  
UP 6806 49253   6 Jun 1996  
UP 6807 49254   6 Jun 1996  
UP 6808 49255   9 Jun 1996  
UP 6809 49256   9 Jun 1996  
UP 6810 49257   9 Jun 1996  
UP 6811 49258   10 Jun 1996  
UP 6812 49259   12 Jun 1996  
UP 6813 49260 Jun 1996 12 Jun 1996  
UP 6814 49261   10 Jun 1996  
UP 6815 49262   23 Jun 1996  
UP 6816 49263   14 Jun 1996  
UP 6817 49264   14 Jun 1996  
UP 6818 49265   15 Jun 1996  
UP 6819 49266   15 Jun 1996  
UP 6820 49267   16 Jun 1996  
UP 6821 49268 Jun 1996 16 Jun 1996  
UP 6822 49269 Jun 1996 20 Jun 1996  
UP 6823 49270   19 Jun 1996  
UP 6824 49271   20 Jun 1996  
UP 6825 49272   19 Jun 1996  
UP 6826 49273   21 Jun 1996  
UP 6827 49274   21 Jun 1996  
UP 6828 49275   22 Jun 1996  
UP 6829 49276 Jun 1996 22 Jun 1996  
UP 6830 49277 Jun 1996 23 Jun 1996  
UP 6831 49278   23 Jun 1996  
UP 6832 49279   30 Jun 1996  
UP 6833 49280 Jul 1996 24 Jul 1996  
UP 6834 49281 Jul 1996 24 Jul 1996  
UP 6835 49282   24 Jul 1996  
UP 6836 49283   1 Jul 1996  
UP 6837 49284   30 Jun 1996  
UP 6838 48925 Oct 1995 Oct 1995  
UP 6839 48926   Oct 1995  
UP 6840 48927   Oct 1995  
UP 6841 48928   Oct 1995  
UP 6842 48929   Oct 1995  
UP 6843 48930   Oct 1995  
UP 6844 48931   Oct 1995  
UP 6845 48932   Oct 1995  
UP 6846 48933 Oct 1995 Oct 1995  
UP 6847 48934   Oct 1995  
UP 6848 48935   Oct 1995  
UP 6849 48936   Oct 1995  
UP 6850 48937 Oct 1995 Oct 1995  
UP 6851 48938 Oct 1995 Oct 1995  
UP 6852 48939   Oct 1995  
UP 6853 48940 Oct 1995 Oct 1995  
UP 6854 48941   Oct 1995  
UP 6855 48942   Oct 1995  
UP 6856 48953   Oct 1995  
UP 6857 48944 Oct 1995 Oct 1995  
UP 6858 48945 Oct 1995 Oct 1995  
UP 6859 48946 Oct 1995 Oct 1995  
UP 6860 48947 Oct 1995 Oct 1995  
UP 6861 48948   Oct 1995  
UP 6862 48949 Oct 1995 Oct 1995  
UP 6863 48950   Nov 1995  
UP 6864 48951   Nov 1995  
UP 6865 48952   Nov 1995  
UP 6866 48953   Nov 1995  
UP 6867 48954   Nov 1995  
UP 6868 48955   Nov 1995  
UP 6869 48956   Nov 1995  
UP 6870 48957   Nov 1995  
UP 6871 48958   Nov 1995  
UP 6872 48959 Nov 1995 Nov 1995  
UP 6873 48960   Nov 1995  
UP 6874 48961   Nov 1995  
UP 6875 48962 Nov 1995 Nov 1995  
UP 6876 48963 Nov 1995 Nov 1995  
UP 6877 48964 Nov 1995 Nov 1995  
UP 6878 48965   Nov 1995  
UP 6879 48966 Nov 1995 Nov 1995  
UP 6880 48967   Nov 1995  
UP 6881 48968   Nov 1995  
UP 6882 48969   Nov 1995  
UP 6883 48970   Nov 1995  
UP 6884 48971   Nov 1995  
UP 6885 48972   Nov 1995  
UP 6886 48973   Nov 1995  
UP 6887 48974   Nov 1995  

General Notes:

a. Total of 150 units.
b. UP 6838-6887 (50 units) were ordered by C&NW before the April 1995 merger, and delivered to UP in October and November 1995.
c. UP 6840-6845 (six units, along with four C40-8Ws, UP 9387-9390) were equipped to operate with fuel tenders UPT 5-8.
d. UP 6885-6887 (three units) were originally equipped with GE's design for self-steering radial trucks. UP 6886 was retrofitted with standard trucks in late 1997.
e. UP's designation for these units is C44AC; GE's designation is AC4400CW.

Notes:

1. UP 6748 has a special plaque commemorating John W. Givens, "For his unwavering commitment to safety, this locomotive is dedicated in honor of John W. Givens, Foreman General, North Little Rock, Arkansas, J. C. Kenefick Safety Award Winner 1996."
   

GE C44AC (AC4400CW) -- 1 unit
4400 horsepower; C-C trucks; 412,000 pounds operating weight

Road
Number
First
Number
Builder
Number
Builder
Date
Date To
UP 6895
New
Number
Date To
New Number
UP 6895 SP 279 48640 Jun 1995 4 Jul 1998 UP 6247 13 Jun 2008

General Notes:

a. UP's designation is C44AC; GE's designation is AC4400CW.
b. SP 272-378 assigned UP 6888-6994 in September 1997, one unit (6895) renumbered; assigned UP 6318-6420 in December 1999 (UP 6895 assigned UP 6424).
c. Renumbered to UP 6424.

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