Union Pacific Railroad

General Notes:

1. 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.
2. All 60 former MP SD50s were relettered from Missouri Pacific to Union Pacific from December 1988 to September 1990; the first, UP 5029, was completed on 12 December 1988; the last was 5052, completed on 17 September 1990.
3. 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.
4. Equipped with Automatic Cab Signal equipment for leading-unit operation along Union Pacific's lines in Nebraska, Wyoming, and along the Columbia River.
5. UP 5001 was renumbered to UP 9881 on 11 December 1999 as part of the interim UP 9880-9939 group.
6. 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.

Notes:

1. UP 9839, retired on July 16, 2007, was first reported as being retired on November 30, 2002, which was in error.
2. UP 9842 was retired the first time on November 30, 2002; returned to service on April 8, 2004; retired for a second time on August 16, 2004.

General Notes:

1. 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.
2. 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.
3. 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.
4. All 17 units retired on 15 June 2007 upon expiration of lease; returned to owner.

General Notes:

1. 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.
2. Individual unit histories:

Notes:

1. UP 9866 is blank and not used.
2. UP 9871 (ex D&RGW 5401) was retired by UP on April 12, 2010; donated to Colorado Railroad Museum later in 2010; stored on property of Coors Brewing Co. until moved to the museum grounds on August 22, 2018.

General Notes:

1. 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.

General Notes:

1. 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.
2. Seven units were retired and renumbered the UP 7875-series for use in a Peak Power surge fleet.
3. Individual unit histories:

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.
10. UP 9950 donated to Western America Railroad Museum at Barstow, California (date?).

General Notes:

1. 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).
2. 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.)
3. Built on EMD order number 7127.
4. Remaining 16 units assigned UP 9951-9966 in December 1999; 10 units renumbered.
5. Individual unit histories:

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.

General Notes:

1. 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.
2. 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.

General Notes:

1. 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).
2. 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.
3. 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).
4. 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).
5. 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).
6. 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.
7. Assigned UP 8891-8909 in December 1999; assigned UP 9967-9985 in January 2000.
8. Equipped with Automatic Train Stop (ATS) for operation along former C&NW Chicago commuter lines.
9. Equipped with Automatic Train Control (ATC) for operation along former C&NW lines.
10. UP 9967-9978 were built on EMD order number 7831; UP 9979-9985 were built on EMD order number 7851.
11. Individual unit histories:

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.

General Notes:

1. 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.
2. 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.
3. Individual unit histories:

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.

General Notes:

1. 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.
2. 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.
3. 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)
4. Built on EMD order number 7357.

General Notes:

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

Notes:

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

General Notes:

1. 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.
2. Assigned UP 5506 in September 1997, not renumbered; assigned UP 9879 in December 1999, not renumbered; assigned UP 9999 in January 2000.

Notes:

1. UP 9999 was sold to National Railway Equipment in March 2002; rebuilt to GP38-2 standards in June 2005; sold to CP as 4521, as of August 2005. (UP 954, 955, 957 were sold to NRE and rebuilt to GP38-2s at the same time, becoming CP 4522-4524.) (information from Bill Miller, via email dated August 29, 2005)

General Notes:

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