UP Diesel Roster, 1934-2009, Part 73

EMD SD50 — 10 units
3500 horsepower; C-C trucks; 394,000 pounds operating weight

Road Number	First Number	Second Number	Builder Date	Builder Number	Date To UP Number	Date To 9835 Series	Date Retired
UP 9835	MP 5002	UP 5002	Nov 1984	847008-3	26 Jun 1990	5 Aug 2002	11 Jul 2007
UP 9836	MP 5003	UP 5003	Nov 1984	847008-4	2 Mar 1990	13 May 2002	11 Jul 2007
UP 9837	MP 5018	UP 5018	Nov 1984	847008-19	7 Apr 1989	3 Sep 2005	11 Jul 2007
UP 9838	MP 5030	UP 5030	Dec 1984	847008-31	12 Jul 1990	29 Aug 2002
UP 9839	MP 5036	UP 5036	Dec 1984	847008-37	29 May 1990	9 May 2002	30 Nov 2002
UP 9840	MP 5039	UP 5039	Dec 1984	847008-40	13 Feb 1989	15 May 2002	11 Jul 2007
UP 9841	MP 5046	UP 5046	Dec 1984	847008-47	14 Dec 1988	6 Jun 2002	26 Jul 2005
UP 9842	MP 5048	UP 5048	Dec 1984	847008-49	16 Aug 1990	17 Aug 2002	30 Nov 2002 (16 Aug 2004)
UP 9843	MP 5053	UP 5053	Dec 1984	847008-54	23 Jul 1990	17 Aug 2002	11 Jul 2007
UP 9844	MP 5055	UP 5055	Dec 1984	847008-56	15 Feb 1990	20 May 2002	11 Jul 2007

General Notes:

a.	Total of 60 units; purchased by MP in late 1984, after the December 1982 merger with UP; delivered new as MP units with yellow and gray paint and Missouri Pacific lettering as the first new units of the merged UP and MP.
b.	All 60 former MP SD50s were relettered from Missouri Pacific to Union Pacific from December 1990 to September 1990; the first, UP 5029, was completed on 12 December 1988; the last was 5052, completed on 17 September 1990.
d.	Beginning in mid-1994, former MP SD50s were rebuilt to what UP calls SD50Ms, reducing their horsepower from 3600 to 3500 and improving their cooling system, including installation of eight-blade cooling fans; the first unit to be converted was 5016, completed on 6 June 1994.
e.	Equipped with Automatic Cab Signal equipment for leading-unit operation along Union Pacific's lines in Nebraska, Wyoming, and along the Columbia River.
f.	UP 5001 was renumbered to UP 9881 on 11 December 1999 as part of the interim UP 9880-9939 group.
g.	Assigned UP 9880-9939 in December 1999; assigned back to UP 5000-5059 in January 2000 (UP 5001 renumbered to UP 9881); most units retired in June 2000 to December 2001, remaining 10 units assigned UP 9835-9844 in May 2002 to clear the 5000 series for use by new SD70Ms.

EMD SD50 — 17 units
3500 horsepower; C-C trucks; 388,000 pounds operating weight

Road Number	First Number	Second Number	Third Number	Builder Date	Builder Number	Date To 5095 Series	Date To 9845 Series	Date Retired
UP 9845	D&RGW 5501	UP 5095		Aug 1984	847022-1	5 Sep 2001	5 Aug 2002	15 Jun 2007
UP 9846	D&RGW 5502	UP 5096		Aug 1984	847022-2	27 Jul 2001	11 Jun 2002	15 Jun 2007
UP 9847	D&RGW 5504	SP 5504	UP 5098	Sep 1984	847022-4	23 Jun 2001	21 Jun 2002	15 Jun 2007
UP 9848	D&RGW 5505	UP 5099		Sep 1984	847022-5	18 Nov 2000	28 May 2002	15 Jun 2007
UP 9849	D&RGW 5503			Sep 1984	847022-3		13 Apr 2005	15 Jun 2007
UP 9850	D&RGW 5506	UP 5100		Sep 1984	847022-6	4 Sep 2001	26 Sep 2002	15 Jun 2007
UP 9851	D&RGW 5507			Sep 1984	847022-7		30 Aug 2005	15 Jun 2007
UP 9852	D&RGW 5508	UP 5102		Sep 1984	847022-8	2 Aug 2001	30 Aug 2002	15 Jun 2007
UP 9853	D&RGW 5509	UP 5103		Sep 1984	847022-9	29 Dec 2000	31 Jul 2002	15 Jun 2007
UP 9854	D&RGW 5510	SP 5510	UP 5104	Sep 1984	847022-10	30 Apr 1998	24 Jul 2002	15 Jun 2007
UP 9855	D&RGW 5511	SP 5511	UP 5105	Sep 1984	847022-11	11 Dec 2001	15 Aug 2002	15 Jun 2007
UP 9856	D&RGW 5512	UP 5106		Sep 1984	847022-12	18 Feb 1998	26 Jul 2002	15 Jun 2007
UP 9857	D&RGW 5513	SP 5513	UP 5107	Sep 1984	847022-13	11 Oct 2001	25 Jul 2002	15 Jun 2007
UP 9858	D&RGW 5514	SP 5514	UP 5108	Sep 1984	847022-14	13 Aug 2001	20 Sep 2002	15 Jun 2007
UP 9859	D&RGW 5515	UP 5109		Sep 1984	847022-15	3 Oct 2001	18 Sep 2002	15 Jun 2007
UP 9860	D&RGW 5516	SP 5516	UP 5110	Sep 1984	847022-16	14 Nov 1997	8 Aug 2002	15 Jun 2007
UP 9861	D&RGW 5517	SP 5517	UP 5111	Sep 1984	847022-17	5 Oct 2001	18 Sep 2002	15 Jun 2007

General Notes:

a.	Total of 17 units went to UP at merger; seven units (D&RGW 5504, 5510, 5511, 5513, 5514, 5516, 5517) were repainted to SP in late 1994 and early 1995, with D&RGW sublettering on the cab, and were among a total of 26 D&RGW units repainted to SP.
b.	UP 5110 (ex D&RGW/SP 5516) was the first of this group to be repainted to Union Pacific, completed on 14 November 1997; the last was UP 9851 (ex D&RGW 5507), completed on 30 August 2005.
c.	Assigned UP 9975-9991 in December 1999; assigned back to UP 5095-5111 in January 2000; assigned UP 9845-9861 in April 2002 to avoid conflict with additional new SD70Ms in the 5000 series numbers.
d.	All 17 units retired on 15 June 2007 upon expiration of lease; returned to owner.

EMD SD40T-2 — 10 units
3000 horsepower; C-C trucks; 388,000 pounds operating weight

Road Number	Previous Number	Date To 9863 Series	Builder Date	Builder Number	Date Retired
UP 9863	UP 8571	10 Jan 2007	Oct 1974	74636-3	24 Jan 2008
UP 9864	UP 8608	26 Feb 2007	Oct 1974	74636-9	24 Jan 2008
UP 9865	UP 8612	28 Feb 2007	Oct 1974	74636-14	24 Jan 2008
UP 9866
UP 9867	UP 8583	25 May 2007	Aug 1978	776098-5	24 Jan 2008
UP 9868	UP 8586	18 May 2007	Aug 1978	776098-8
UP 9869	UP 8588	30 Jan 2007	Aug 1978	776098-10	24 Jan 2008
UP 9870	UP 8592	10 May 2007	Mar 1980	786264-2	5 Dec 2008
UP 9871	UP 8594	1 Jun 2007	Mar 1980	786264-4
UP 9872	UP 8599	22 Jan 2007	Mar 1980	786264-10	24 Jan 2008
UP 9873	UP 8601	27 Apr 2007	Mar 1980	786264-13	24 Jan 2008

General Notes:

a.	Renumbered from ex D&RGW SD40T-2 units in the 8570 series to clear that number series for use by new SD70ACe units being being delivered during 2007.
b.	Individual unit histories:

Road Number	First Number	Second Number	Date To Second Number	Third Number	Date To Third Number
UP 9863	D&RGW 5343	UP 4001	23 Nov 1998	UP 8571	14 Apr 2000
UP 9864	D&RGW 5349	UP 8608	8 Dec 2004
UP 9865	D&RGW 5354	UP 8612	10 Dec 2004
UP 9866
UP 9867	D&RGW 5390	UP 8583	25 Oct 2005
UP 9868	D&RGW 5393	SP 5393		UP 8586	29 Aug 2001
UP 9869	D&RGW 5395	UP 4018	26 Mar 1999	UP 8588	10 Apr 2000
UP 9870	D&RGW 5399	SP 5399		UP 8592	26 Jul 2001
UP 9871	D&RGW 5401	UP 8594	30 Jun 2005
UP 9872	D&RGW 5407	UP 8599	4 Sep 2001
UP 9873	D&RGW 5410	UP 8601	20 Aug 2001

EMD SD50 — 1 unit
3500 horsepower; C-C trucks; 394,000 pounds operating weight

Road Number	First Number	Second Number	Builder Date	Builder Number	Date To 5000 Series	Date To 9880 Series	Date Retired
UP 9881	MP 5001	UP 5001	Nov 1984	847008-2	4 Oct 1989	11 Dec 1999	11 Jul 2007

General Notes:

UP 9881 was renumbered from UP 5001 (ex MP 5001) on 11 December 1999, just one day after the renumber plan was adopted on 10 December 1999. During February 2000, the renumbering plan was changed to retain all of the former C&NW, D&RGW, and MP SD50s in their original 5000-5111 number group (all 5000 series SD50 were later either renumbered to the 9835 series, or retired, to clear the 5000 series for use by new SD70M units). UP 9881 planned to return to UP 5001; retired prior to be renumbered.

EMD SD40-2 — 69 units
3000 horsepower; C-C trucks; 391,000 pounds operating weight

Road Number	Previous Number	Builder Date	Builder Number	Date To 9882 Series	Renumbered To	Date Renumbered	Date Retired	Notes
UP 9882	UP 4159	Mar 1974	73748-21	5 Dec 2000			31 May 1999	1
UP 9883	UP 4115	Dec 1973	73648-1	19 Apr 2000			19 Jun 2001
UP 9884	UP 4119	Dec 1973	73648-5	13 Apr 2000			24 May 2001
UP 9885 (1st)	UP 4123	Jan 1974	73648-9	5 May 2000			26 Dec 2001
UP 9885 (2nd)	UP 3906	Aug 1976	766005-2	18 Jan 2003
UP 9886	UP 3938	Jun 1979	786181-19	3 Feb 2003			30 Oct 2003
UP 9887 (1st)	UP 4129	Jan 1974	73648-15	20 Jul 2000			24 May 2001
UP 9887 (2nd)	UP 3973	Apr 1980	796311-20	17 Jan 2003	UP 7885	7 Nov 2003	14 Oct 2003
UP 9888	UP 4131	Jan 1974	73648-17	29 Feb 2000			17 Feb 2009
UP 9889	UP 3966	Apr 1980	796311-13	31 Mar 2003		16 Jul 2007
UP 9890	UP 4137	Jan 1974	73648-23	18 Sep 2000
UP 9891	UP 4138	Jan 1974	73648-24	11 Jun 2000
UP 9892	UP 4139	Feb 1974	73748-1	14 Jun 2000			31 Jul 2001
UP 9893	UP 4140	Feb 1974	73748-2	27 Jul 2000			27 Apr 2001
UP 9894	UP 4143	Feb 1974	73748-5	16 Apr 2000			28 Jun 2001
UP 9895	UP 4146	Feb 1974	73748-8	6 Sep 2000			28 Sep 2001
UP 9896	UP 4147	Feb 1974	73748-9	11 Jul 2000	UP 7911	29 Jan 2004	19 Jun 2001
UP 9897	UP 4148	Feb 1974	73748-10	5 Aug 2000			28 Sep 2001	2
UP 9898	UP 4149	Mar 1974	73748-11	19 Jul 2000			12 Jul 2001
UP 9899	UP 4150	Mar 1974	73748-12	25 Jul 2000
UP 9900	UP 4151	Mar 1974	73748-13	9 Jul 2000			12 Jul 2001
UP 9901	UP 4152	Mar 1974	73748-14	30 Jul 2000			29 Aug 2001	3
UP 9902	UP 4153	Mar 1974	73748-15	20 Aug 2000			31 Jul 2001
UP 9903	UP 4154	Mar 1974	73748-16	6 Oct 2000			29 Jan 2001
UP 9904	UP 4155	Mar 1974	73748-17	2 Nov 2000			30 Jan 2002
UP 9905	UP 4156	Mar 1974	73748-18	30 Jul 2000			28 Sep 2001
UP 9906	UP 4157	Mar 1974	73748-19	25 Oct 2000			31 Jul 2001
UP 9907	UP 4158	Mar 1974	73748-20	29 Apr 2000	UP 7902	23 Dec 2003	26 Dec 2001
UP 9908	UP 4160	Apr 1974	73748-22	3 Jul 2000			27 Apr 2001
UP 9909	WP 4161	Mar 1974	73748-23	17 Jan 2001			31 Oct 2000	4
UP 9910	UP 4202	Aug 1975	75616-1	4 Jul 2000
UP 9911	UP 4203	Aug 1975	75616-2	28 Jul 2000			22 Nov 2000
UP 9912	UP 4204	Aug 1975	75616-3	11 Jun 2000			20 Jun 2001
UP 9913	UP 4206	Aug 1975	75616-5	20 Aug 2000			28 Sep 2001
UP 9914	UP 4208	Aug 1975	75616-7	24 Jul 2000			18 Apr 2000	5
UP 9915	UP 4209	Aug 1975	75616-8	24 Jul 2000			27 Feb 2001
UP 9916	UP 4210	Aug 1975	75616-9	31 Aug 2000			22 Nov 2000
UP 9917	UP 4212	Aug 1975	75616-11	24 Jul 2000			27 Feb 2001
UP 9918	UP 4213	Aug 1975	75616-12	1 Sep 2000			16 Oct 2001
UP 9919	UP 4214	Aug 1975	75616-13	17 Jul 2000	UP 7892	15 Dec 2003	15 Nov 2001
UP 9920	UP 4215	Aug 1975	75616-14	20 Aug 2000			31 Oct 2000
UP 9921	UP 4220	Aug 1978	776099-5	8 May 2000
UP 9922	UP 4224	Aug 1978	776099-9	12 Sep 2000			31 Jul 2001
UP 9923	UP 4228	Aug 1978	776099-13	15 Sep 2000	UPY 859	26 Apr 2003	26 Apr 2003	6
UP 9924	UP 4233	Sep 1978	776099-18	19 Jul 2000			22 Aug 2001
UP 9925	UP 4234	Sep 1978	776099-19	3 Oct 2000			29 Nov 2001
(UP 9926)	UP 4237	Sep 1978	776099-22	10 Oct 2000			7 Feb 2001
UP 9927	UP 4238	Sep 1978	776099-23	28 Aug 2000			24 May 2001	7
UP 9928	UP 4243	Sep 1978	776099-28	20 Aug 2000			19 Apr 2001
UP 9929	UP 4246	Sep 1978	776099-31	16 Aug 2000	UPY 866	28 Apr 2005	28 Apr 2005	8
UP 9930	UP 4248	Sep 1978	776099-33	15 Sep 2000			16 Oct 2001
UP 9931	UP 4256	Aug 1978	777100-5	12 Oct 2000			19 Apr 2001
UP 9932	UP 4258	Aug 1978	777100-7	21 Apr 2000			24 May 2001
UP 9933	UP 4264	Aug 1978	777100-13	23 Sep 2000			29 Nov 2001
UP 9934	UP 4270	May 1979	786178-5	25 Feb 2000			17 Mar 2000	9
UP 9935 (1st)	UP 4278	May 1979	786178-13	2 Nov 2000	UPY 858	7 Jun 2002
UP 9935 (2nd)	UP 3924	Jun 1979	786181-5	5 Feb 2003			28 Apr 2003
UP 9936	UP 4280	May 1979	786178-15	29 Nov 2000	UP 7879	3 Oct 2003	31 Jul 2001
UP 9937	UP 4285	May 1979	786178-20	31 Aug 2000			24 May 2001
UP 9938	UP 4286	May 1979	786178-21	7 May 2000			29 Nov 2001
UP 9939	UP 4289	May 1979	786178-24	15 Jan 2001			29 Nov 2001
UP 9940	UP 4292	Jul 1979	786182-1	4 Oct 2000			26 Dec 2001
UP 9941	UP 4293	Jul 1979	786182-2	10 Nov 2000			29 Nov 2000
UP 9942	UP 4306	Dec 1979	796308-5	15 Oct 2000			31 Jul 2001
UP 9943	UP 3926	Jun 1979	786181-7	4 Feb 2003			14 Sep 2007
UP 9944	UP 4308	Dec 1979	796308-7	8 Nov 2000			29 Aug 2001
UP 9945	UP 4309	Dec 1979	796308-8	5 Sep 2000	UP 7878	16 Oct 2003	22 Aug 2001
UP 9946	UP 4312	Apr 1980	786269-1	12 Oct 2000			31 Jul 2001
UP 9947	UP 4314	Apr 1980	786269-3	22 Oct 2000
UP 9948	UP 3957	Apr 1980	796311-4	27 Jan 2003	UP 7881	24 Oct 2003	24 Oct 2003
(UP 9949)	UP 4319	Apr 1980	796311-4		UPY 853	22 Feb 2000
UP 9950	UP 4320	Apr 1980	786269-9	21 Aug 2000			22 Aug 2001

General Notes:

a.	All 69 units were renumbered (or assigned new numbers) from units in UP 4115-4163 and 4202-4321 groups; other units, with B-numbers, converted to trailing-unit-only status (by removal of refrigerator, toilet, and cab seats) in June through December 1992; were renumbered to UP 8927-8999 group.
b.	Seven units retired and renumbered 7875 series for use in a Peak Power surge fleet.
c.	Individual unit histories:

Road Number	First Number	Second Number	Third Number
UP 9882	MP 3159	UP 4159
UP 9883	MP 3115	UP 4115
UP 9884	MP 3119	UP 4119
UP 9885 (1st)	MP 3123	UP 4123
UP 9885 (2nd)	MP 3222	MP 6006	UP 3906
UP 9886	MP 6038	UP 3938
UP 9887 (1st)	MP 3129	UP 4129
UP 9887 (2nd)	MP 6073	UP 3973
UP 9888	MP 3131	UP 4131
UP 9889	MP 6066	UP 3966
UP 9890	MP 3137	UP 4137
UP 9891	MP 3138	UP 4138
UP 9892	MP 3139	UP 4139
UP 9893	MP 3140	UP 4140
UP 9894	MP 3143	UP 4143
UP 9895	MP 3146	UP 4146
UP 9896	MP 3147	UP 4147
UP 9897	MP 3148	UP 4148
UP 9898	MP 3149	UP 4149
UP 9899	MP 3150	UP 4150
UP 9900	MP 3151	UP 4151
UP 9901	MP 3152	UP 4152
UP 9902	MP 3153	UP 4153
UP 9903	MP 3154	UP 4154
UP 9904	MP 3155	UP 4155
UP 9905	MP 3156	UP 4156
UP 9906	MP 3157	UP 4157
UP 9907	MP 3158	UP 4158
UP 9908	MP 3160	UP 4160
UP 9909	MP 3161	UP 4161
UP 9910	MP 3202	UP 4202
UP 9911	MP 3203	UP 4203
UP 9912	MP 3204	UP 4204
UP 9913	MP 3206	UP 4206
UP 9914	MP 3208	UP 4208
UP 9915	MP 3209	UP 4209
UP 9916	MP 3210	UP 4210
UP 9917	MP 3212	UP 4212
UP 9918	MP 3213	UP 4213
UP 9919	MP 3214	UP 4214
UP 9920	MP 3215	UP 4215
UP 9921	MP 3220	UP 4220
UP 9922	MP 3224	UP 4224
UP 9923	MP 3228	UP 4228
UP 9924	MP 3233	UP 4233
UP 9925	MP 3234	UP 4234
UP 9926	MP 3237	UP 4237
UP 9927	MP 3238	UP 4238
UP 9928	MP 3243	UP 4243
UP 9929	MP 3246	UP 4246
UP 9930	MP 3248	UP 4248
UP 9931	MP 3256	UP 4256
UP 9932	MP 3258	UP 4258
UP 9933	MP 3264	UP 4264
UP 9934	MP 3270	UP 4270
UP 9935 (1st)	MP 3278	UP 4278
UP 9935 (2nd)	MP 6024	UP 3924
UP 9936	MP 3280	UP 4280
UP 9937	MP 3285	UP 4285
UP 9938	MP 3286	UP 4286
UP 9939	MP 3289	UP 4289
UP 9940	MP 3292	UP 4292
UP 9941	MP 3293	UP 4293
UP 9942	MP 3306	UP 4306
UP 9943	MP 6026	UP 3926
UP 9944	MP 3308	UP 4308
UP 9945	MP 3309	UP 4309
UP 9946	MP 3312	UP 4312
UP 9947	MP 3314	UP 4314
UP 9948	MP 3318	UP 4318
UP 9949	MP 3319	UP 4319
UP 9950	MP 3320	UP 4320

Notes:

1.	UP 9882 (as UP 4159) was retired on 31 May 1999, prior to the December 1999 renumber plan, but was still on property and was renumbered to UP 9882 on 5 December 2000 to clear the UP 4159 number for use by new SD70M 4159.
2.	UP 9897 (ex UP 4148) was retired in 2001; sold to Relco (RLCX) 3057, seen at Relco Minooka on October 15, 2006 still in UP yellow and gray. (information from Ken Lanovich via email, 15 October 2006, and Doug Cummings via email on 19 October 2006)
3.	UP 9901 was scrapped by Pro Metals in Houston, Texas, during or just before June 2004. (information from Mike Roberts, via email to RR Rosters on July 12, 2004)
4.	UP 9909 was renumbered from WP 4161 (the WP series are temporary numbers used for retired locomotives); UP 4161 was retired on 31 October 2000, but was still on property and was renumbered to WP 4161 on 22 November 2000 to clear the UP 4161 number for use by a new SD70M; renumbered to UP 9909 on 17 January 2001 while retired and stored at Los Angeles.
5.	UP 9914, as UP 4208, was retired on 18 April 2000; renumbered to UP 9914 while in retired status.
6.	UP 9923 was rebuilt to SD38-2 by UP for yard switch service and renumbered to UPY 859 on 26 April 2003.
7.	UP 9927 (also as UP 4238) was one of three units (UP 3626 and 3798 were the other two units) that carried the Operation Redblock substance abuse prevention slogan.
8.	UP 9929 was rebuilt to SD38-2 by UP for yard switch service and renumbered to UPY 866 on 28 April 2005.
9.	UP 9934 (ex UP 4270) was the first unit in this group to be renumbered, completed on 25 February 2000; retired on 17 March 2000.

EMD GP40 — 10 units
3000 horsepower; B-B trucks; 272,000 pounds operating weight

Road Number	Previous Number	Builder Date	Builder Number	Date To 667 Series	Date To 9951 Series	Date Retired	Notes
(UP 9951)	UP 667	Aug 1968	34283	19 Jun 1990		( 15 May 2000)
(UP 9952)	UP 669	Aug 1968	34285	15 Feb 1991		( 21 Jan 2002)
UP 9953	UP 670	Aug 1968	34286	19 May 1990	27 Apr 2000	18 Apr 2000	1
(UP 9954)	UP 671	Aug 1968	34287	29 Nov 1990		(18 Apr 2000)
UP 9955	UP 672	Aug 1968	34288	15 Sep 1989	20 Sep 2002	(see note)	2
UP 9956	UP 674	Aug 1968	34291	23 Jun 1989	18 Aug 2000	25 May 2001
(UP 9957)	UP 675	Aug 1968	34293	25 Apr 1989		(25 May 2001)
(UP 9958)	UP 676	Aug 1968	34297	1 May 1990		(25 May 2001)
(UP 9959)	UP 677	Aug 1968	34299	18 Sep 1989		(25 May 2001)
UP 9960	UP 678	Sep 1968	34310	19 Oct 1989	9 Mar 2000	25 May 2001	3
UP 9961	UP 679	Sep 1968	34316	13 Jul 1989	13 Mar 2000	25 May 2001
UP 9962	UP 680	Sep 1968	34321	6 Sep 1990	28 Mar 2000	7 Feb 2001	4
UP 9963	UP 681	Sep 1968	34329	1 Feb 1991	14 Apr 2000	25 May 2001
UP 9964	UP 682	Oct 1968	34338	27 Dec 1990	12 Apr 2000	20 Jun 2001
UP 9965	UP 683	Oct 1968	34344	18 Apr 1989	9 Mar 2000	26 Dec 2001	3, 5
UP 9966	UP 684	Aug 1968	34282	9 Apr 1993	24 Jul 2000	25 May 2001	6

General Notes:

a.	Total of 18 MKT units went to UP at merger, numbered MKT 231-248; renumbered to UP 666-683 (later UP 667-684) in April 1989 (UP 683) through February 1991 (UP 669).
b.	Built as Penn Central units; to Conrail in 1976; to MKT in 1983 upon expiration of lease to Conrail; during May and July 1984, at least 12 units were in service as MKT units, with their former CR road numbers, including MKT 3105, 3106, 3107, 3108, 3109, 3110, 3111, 3112, 3120, 3133, 3144, and 3161. (MKT 3100-series information from Norm Metcalf, Keel Middleton, and members of Railspot Sooner State Rails email discussion groups.)
c.	Built on EMD order number 7127.
d.	Remaining 16 units assigned UP 9951-9966 in December 1999; 10 units renumbered.
e.	Individual unit histories:

Road Number	First Number	Second Number	Third Number	Fourth Number	Fifth Number	Sixth Number
(UP 9951)	PC 3106	CR 3106	MKT 3106	MKT 232	UP 667
(UP 9952)	PC 3108	CR 3108	MKT 3108	MKT 234	UP 669
UP 9953	PC 3109	CR 3109	MKT 3109	MKT 235	UP 670
(UP 9954)	PC 3110	CR 3110	MKT 3110	MKT 236	UP 671
UP 9955	PC 3111	CR 3111	MKT 3111	MKT 237	UP 672
UP 9956	PC 3114	CR 3114	MKT 239	UP 674
(UP 9957)	PC 3116	CR 3116	MKT 240	UP 675
(UP 9958)	PC 3120	CR 3120	MKT 3120	MKT 241	UP 676
(UP 9959)	PC 3122	CR 3122	MKT 242	UP 677
UP 9960	PC 3133	CR 3133	MKT 3133	MKT 243	UP 678
UP 9961	PC 3139	CR 3139	MKT 244	UP 679
UP 9962	PC 3144	CR 3144	MKT 3144	MKT 245	UP 680
UP 9963	PC 3152	CR 3152	MKT 246	UP 681
UP 9964	PC 3161	CR 3161	MKT 3161	MKT 247	UP 682
UP 9965	PC 3167	CR 3167	MKT 248	UP 683
UP 9966	PC 3105	CR 3105	MKT 3105	MKT 231	UP 666	UP 684

Notes:

1.	UP 9953 was retired as UP 670 on 18 April 2000, then renumbered to UP 9953 on 27 April 2000.
2.	UP 9955 renumbered to UP 1337 on 31 July 2008.
3.	UP 9960 (ex UP 678) and UP 9965 (ex UP 683) were the first units in this group to be renumbered, both completed on 9 March 2000.
4.	UP 9962 sold to National Railway Equipment in (?); rebuilt to BNSF GP38-2R 2003 (during 2006), completed on (?).
5.	UP 9965, as UP 683 (ex MKT 248) was the first unit in this group to be repainted to Union Pacific, completed on 18 April 1989, following repairs to wreck damage received on 5 December 1988 at Red Oak, Okla.
6.	UP 9966, as UP 684 was renumbered from UP 666 (ex MKT 231) on 9 April 1993; the number 666 is believed by many to be "the number of the beast" (the antichrist), see Revelation, chapter 13, verse 18; in service as UP 666 from 12 July 1989 to 9 April 1993.

EMD SD45T-2 — 1 unit
3600 horsepower; C-C trucks

Road Number	First Number	Second Number	Builder Date	Builder Number	Date To UP 9965	Date Retired
UP 9965	SSW 6871	UP 4965	Feb 1975	73674-20	3 Jul 2003	29 Aug 2002

General Notes:

a.	One of a total of 59 SP/SSW units went to UP at merger, numbered SP 6793-6828 and SSW 6869-6891; assigned UP 4929-4986 in September 1997; all units retired.
b.	UP 4965 (ex SSW 6871) was retired on 20 August 2002, but was still on property a year later to be renumbered to UP 9965 on 3 July 2003 to avoid conflict with new SD70M 4965, delivered on the same day.

EMD GP40 — 19 units
3000 horsepower; B-B-trucks; 277,000 pounds operating weight

Road Number	Previous Number	Builder Date	Builder Number	Date To 633 Series	Date To 685 Series	Date To 9967 Series	Date Retired	Notes
UP 9967	UP 689	Dec 1965	30951	25 Aug 1995	23 Dec 1997	13 Apr 2000	25 May 2001	1
UP 9968	UP 691	Dec 1965	30953	9 May 1996	23 Jul 1997	14 Jun 2000	20 Jun 2001
UP 9970	UP 698	Dec 1965	30960		6 Jan 1997	14 Apr 2000	20 Jun 2001
(UP 9971)	C&NW 5515	Dec 1965	30963				26 Apr 2000
(UP 9972)	C&NW 5516	Dec 1965	30964				12 Oct 2000
(UP 9973)	C&NW 5517	Dec 1965	30965				20 Jun 2001
(UP 9974)	C&NW 5518	Dec 1965	30966				29 Jan 2001
UP 9975	C&NW 5520	Dec 1965	30968			19 Apr 2000	24 May 2004
(UP 9976)	C&NW 5521	Dec 1965	30969				17 Jul 2001	2
(UP 9977)	C&NW 5522	Dec 1965	30970				15 May 2000
UP 9979	C&NW 5500	Dec 1965	30947			17 Apr 2000
UP 9980	C&NW 5502	Dec 1965	30949			17 Apr 2000	25 May 2001
(UP 9981)	C&NW 5527	Nov 1965	30975				20 Jun 2001
(UP 9982)	C&NW 5528	Nov 1965	30976				12 Oct 2000
(UP 9983)	C&NW 5529	Nov 1965	30977				26 Apr 2000
(UP 9984)	C&NW 5531	Nov 1965	30979				15 May 2000
(UP 9985)	UP 652	Nov 1965	30981	26 Feb 1996			12 Oct 2000	3

General Notes:

a.	Original total of 38 C&NW units, numbered C&NW 5500-5537; 33 units went to UP at merger; C&NW retired five units (C&NW 5514, 5519, 5523, 5530 and 5536) prior to the merger. (These five units were sold by C&NW to Helm Financial during 1989; reconditioned and leased to UP as UP 886, 882, 871, 883, and 870; all except UP 882 were rebuilt to GP38-2s and are now in service as UP 2555, 2542, 2552, and 2541).
b.	Built as part of the 40-unit group for New York Central; to Penn Central in 1968; to Conrail in 1976; returned to lessor/owner in 1980 upon expiration of 15 year lease; two units (PC 3024 and 3043) were wrecked and retired by PC; remaining 38 units were purchased by Precision National Corp., in July 1980; C&NW leased the 38 units from PNC in late 1980, and purchased them during 1981; all 38 units, numbered C&NW 5500-5537, were rebuilt in June through December 1981 at C&NW's Oelwein, Iowa, shops, including new electrical cabinets and modifications to the throttle and dynamic braking controls.
c.	Originally assigned UP 633-665 in June 1995 (five units were renumbered: C&NW 5504, 5506, 5507, 5524 and 5532); assigned UP 685-717 in September 1997 (three units were renumbered: UP 636 (ex C&NW 5504), 637 (ex C&NW 5506), and C&NW 5513).
d.	C&NW 5505 (assigned UP 690) was sold to Helm Financial on 29 May 1998; rebuilt to a GP38-2 by Boise Locomotive Co., Boise, Idaho; completed as UP 2572 on 24 September 1998 (assigned UP 1072).
e.	C&NW 5511 (assigned UP 696) was sold to Helm Financial on 29 May 1998; rebuilt to a GP38-2 by Boise Locomotive Co., Boise, Idaho; completed as UP 2573 on 6 October 1998 (assigned UP 1073).
f.	Of the 33 units that went to UP at merger, 19 units remain to be assigned UP 9967-9985; the other 12 units (C&NW 5501, 5503, 5508, 5509, 5510, 5512, 5525, 5526, 5533, 5534, 5535, and 5537) were not assigned numbers in the 9967-9985 group, and two units (C&NW 5505 and 5511) were retired by UP before the December 1999 renumber plan.
g.	Assigned UP 8891-8909 in December 1999; assigned UP 9967-9985 in January 2000.
h.	Equipped with Automatic Train Stop (ATS) for operation along former C&NW Chicago commuter lines.
i.	Equipped with Automatic Train Control (ATC) for operation along former C&NW lines.
j.	UP 9967-9978 were built on EMD order number 7831; UP 9979-9985 were built on EMD order number 7851.
k.	Individual unit histories:

Road Number	First Number	Second Number	Third Number	Fourth Number	Fifth Number	Sixth Number
UP 9967	NYC 3014	PC 3014	CR 3014	C&NW 5504	UP 636	UP 689
UP 9968	NYC 3016	PC 3016	CR 3016	C&NW 5506	UP 637	UP 691
UP 9970	NYC 3023	PC 3023	CR 3023	C&NW 5513	UP 698
UP 9971	NYC 3026	PC 3026	CR 3026	C&NW 5515
UP 9972	NYC 3027	PC 3027	CR 3027	C&NW 5516
UP 9973	NYC 3028	PC 3028	CR 3028	C&NW 5517
UP 9974	NYC 3029	PC 3029	CR 3029	C&NW 5518
UP 9975	NYC 3031	PC 3031	CR 3031	C&NW 5520
UP 9976	NYC 3032	PC 3032	CR 3032	C&NW 5521
UP 9977	NYC 3033	PC 3033	CR 3033	C&NW 5522
UP 9979	NYC 3010	PC 3010	CR 3010	C&NW 5500
UP 9980	NYC 3012	PC 3012	CR 3012	C&NW 5502
UP 9981	NYC 3038	PC 3038	CR 3038	C&NW 5527
UP 9982	NYC 3039	PC 3039	CR 3039	C&NW 5528
UP 9983	NYC 3040	PC 3040	CR 3040	C&NW 5529
UP 9984	NYC 3042	PC 3042	CR 3042	C&NW 5531
UP 9985	NYC 3044	PC 3044	CR 3044	C&NW 5532	UP 652

Notes:

1.	UP 9967 (ex UP 689) was the first unit in this group to be renumbered, completed on 13 April 2000.
2.	C&NW 5521 (assigned UP 9976) was sold to National Railway Equipment, en route to NRE-Silvis on 14 March 2002.
3.	UP 652 (ex C&NW 5532) was retired on 12 October 2000 but was still on property and was renumbered to WP 652 to clear the UP 652 number for use by renumbered GP38-2 2152.

EMD GP40-2 — 9 units
3000 horsepower; B-B trucks; 277,000 pounds operating weight

Road Number	Previous Number	Builder Date	Builder Number	Date To 9987 Series	Notes
UP 9986	UP 5318	Apr 1980	786277-5	15 Apr 2006	1
UP 9987	UP 907	Apr 1980	786277-3	1 Feb 2003	2
UP 9988	UP 908	Apr 1980	786277-4	18 Jan 2003	3
UP 9989	UP 910	Apr 1980	786277-6	27 Aug 2001	4
UP 9990	UP 911	Apr 1980	786277-7	19 Sep 2002	5
UP 9991	UP 912	Apr 1980	786277-8	7 Oct 2002	6
UP 9992	UP 5368	Apr 1980	786277-9	24 Aug 2004	7
UP 9993	UP 914	Apr 1980	786277-10	19 Dec 2001	8
(UP 9994)	UP 1461	Apr 1980	786277-2		9

General Notes:

a.	Total of 15 WP units went to UP at merger, numbered WP 3545-3559; renumbered to UP 900-914 in February 1984 to November 1988; six units (UP 900-905) were converted to road slug control units and renumbered to UP 3002-3007 in December 1990 to February 1991.
b.	Remaining nine-unit group (UP 906-914) assigned UP 2908-2916 in June 1995, two units (UP 2911 and 2915) renumbered; assigned UP 561-569 in July 1996, one unit (UP 568) renumbered; assigned UP 5315-5323 in March 1997, one unit (UP 5318) renumbered; assigned UP 5361-5369 in September 1997, one unit (UP 5368) renumbered; assigned UP 1461-1469 in December 1999, one unit (UP 1461) renumbered; assigned UP 9986-9994 in August 2001.
c.	Individual unit histories:

Road Number	First Number	Second Number	Third Number	Fourth Number	Fifth Number
UP 9986	WP 3554	UP 909	UP 2911	UP 5318
UP 9987	WP 3552	MP 907	UP 907
UP 9988	WP 3553	UP 908
UP 9989	WP 3555	UP 910
UP 9990	WP 3556	UP 911
UP 9991	WP 3557	UP 912
UP 9992	WP 3558	UP 913	UP 2915	UP 568	UP 5368
UP 9993	WP 3559	UP 914
UP 9994	WP 3551	UP 906	UP 1461

Notes:

1.	UP 9986 was built as WP 3554; renumbered to UP 909 on 16 December 1985; renumbered to UP 2911 on 9 April 1996; renumbered to UP 5318 on 13 March 1997; renumbered to UP 9986 on 15 April 2006.
2.	UP 9987 was built as WP 3552; renumbered to MP 907 on 3 July 1985; renumbered to UP 907 on 14 June 1988; renumbered to UP 9987 on 1 February 2003.
3.	UP 9988 was built as WP 3553; renumbered to UP 908 on 24 April 1984; renumbered to UP 9988 on 18 January 2003.
4.	UP 9989 was built as WP 3555; renumbered to UP 910 on 7 January 1986; renumbered to UP 9989 on 27 August 2001.
5.	UP 9990 was built as WP 3556; renumbered to UP 911 on 7 January 1986; renumbered to UP 9990 on 19 September 2002.
6.	UP 9991 was built as WP 3557; renumbered to UP 912 on 3 January 1986; renumbered to UP 9991 on 7 October 2002.
7.	UP 9992 was built as WP 3558; renumbered to UP 913 on 19 December 1985; renumbered to UP 2915 on 17 April 1996; renumbered to UP 568 on 8 July 1996; renumbered to UP 5368 on 21 May 1999; renumbered to UP 9992 on 24 August 2004.
8.	UP 9993 was built as WP 3559; renumbered to UP 914 on 13 December 1985; renumbered to UP 9993 on 19 December 2001.
9.	UP 9994 was built as WP 3551; renumbered to UP 906 on 11 June 1984; renumbered to UP 1461 on 4 January 2000; not yet renumbered to UP 9994.

EMD GP40 — 1 unit
3000 horsepower; B-B trucks; 277,000 pounds operating weight

Road Number	First Number	Second Number	Builder Date	Builder Number	Date To UP 9995	Date Retired By UP
(UP 9995)	D&RGW 3086	SP 3086	Nov 1971	38571	(not renumbered)	27 Aug 2009

General Notes:

a.	Original total of 13 D&RGW units, numbered D&RGW 3081-3093; eight units went to UP at merger; SP retired five units (D&RGW 3082, 3083, 3089, 3090, and 3091) prior to the merger.
b.	D&RGW 3086 was repainted to SP 3086 in July 1992; it was the first of a total of 23 former D&RGW units to receive SP paint, and wore the later, large version of the new SP speed lettering.
c.	D&RGW 3086 was repainted to SP (retaining D&RGW sublettering on cab side) on 18 July 1992; assigned UP 741 in December 1996 (not renumbered); assigned UP 9986 in December 1999 (not renumbered); assigned UP 9995 in August 2001 (not renumbered); retired by UP on 27 August 2009; sold to Great Walton Railroad, Social Circle, Georgia on 8 October 2009; moved to Social Circle, Georgia during mid April 2010 (2009-2010 updates from Kevin Wood and Randy Keller via email)
d.	Built on EMD order number 7357.

GE C44AC — 3 units
4380 horsepower; C-C trucks; 416,000 pounds operating weight

Road Number	Builder Number	Batch Number	Builder Date	6700 Series Number	Date To 6700 Series	Notes
UP 9997	47634		Nov 1994	UP 6700	20 Apr 2004
UP 9998	47635	1850-2	Nov 1994	UP 6701	23 Jul 1999	1
UP 9999	47636	1850-3	Oct 1994	UP 6702	15 Dec 2000

General Notes:

a.	UP 9997 was completed during August 1994 but was held by GE for additional engineering tests; delivered to UP in November 1994.
b.	The UP designation for these locomotives is C44AC; GE designation is AC4400CW.
c.	Renumbered to UP 6700-6702.

Note:

1.	UP 9998 was wrecked on 12 September 1998 at Shawnee Junction, Wyo.; wreck damage repaired by CEECO, Tacoma, Wash., returned to service as UP 6701 on 23 July 1999.

EMD GP40X — 1 unit
3500 horsepower; B-B trucks; 278,000 pounds operating weight

Road Number	First Number	Builder Date	Builder Number	Date To UP 9999	Date Retired	Notes
UP 9999	SP 7231	Mar 1978	766016-4	18 Dec 2000	26 Dec 2001	1

General Notes:

a.	Original total of four SP units, numbered SP 7200, 7201, 7230, and 7231; one unit went to UP at merger (SP 7231 was retired by SP in May 1996, but reinstated by UP); SP retired three units (SP 7200, 7201, and 7230) prior to the merger.
b.	Assigned UP 5506 in September 1997, not renumbered; assigned UP 9879 in December 1999, not renumbered; assigned UP 9999 in January 2000.

Note:

1.	UP 9999 was sold to National Railway Equipment in (??); rebuilt to GP38-2 standards in mid 2005; sold to CP as 4521, as of August 2005. (information from Bill Miller, via email, 29 August 2005)

EMD SD40-2 — 1 unit
3000 horsepower; C-C trucks; 391,000 pounds operating weight

Road Number	First Number	Builder Date	Builder Number	Date To UP 9999
UP 9999	UP 3128	Jan 1972	7334-6	3 Jun 2005

General Notes:

a.	UP 9999 is a test unit with a rebuilt diesel engine that has been modified to comply with EPA emissions standards.