Union Pacific Railroad

General Notes:

1. Original total of 34 SP/SSW units, numbered SP 7240-7247 and SSW 7248-7273; 32 units went to UP at merger; SP retired two units (SSW 7258 and 7267) prior to the merger.
2. Due to production schedule and delayed financial arrangements, these two groups of former SP and SSW suffered a mix up of frames while being built. The builder's serial numbers on the builder's plates do not match the units' frame numbers, as shown in the column above. (see Locomotive Notes II, Issue 179, page 1)
3. UP 5217 (ex SP 7247) was the first unit in this group to be repainted to Union Pacific, completed on 21 June 1997; UP 5236 (ex SSW 7268) was the last, completed on 11 May 1999.
4. Entire 32-unit group assigned UP 5210-5241 in September 1997, two units (above) renumbered; assigned UP 1310-1341 in December 1999, none renumbered prior to all 32 units being retired in April 2000.

Notes:

1. The lease on all 32 units expired on 31 March 2000; all 32 units were retired by UP on 7 April 2000 and moved by the owner during April 2000 to National Railway Equipment at Silvis, Illinois

General Notes:

1. Original total of 37 D&RGW units, numbered D&RGW 3094-3130; 35 units went to UP at merger; SP retired two units (D&RGW 3108 and 3115) prior to the merger.
2. Of 35 total units that went to UP at merger, these 31 units are assigned UP 5242-5272 (not in D&RGW sequence), and four units are assigned UP 5345-5348 (not in D&RGW sequence).
3. UP 5245 (ex D&RGW 3122) was the first in this group to be repainted to Union Pacific, completed on 24 May 1997; UP 5261 (ex D&RGW 3107) was the last, completed on 14 October 2000.
4. Assigned UP 5242-5272 in September 1997, seven units (above) renumbered; assigned UP 1342-1372 in December 1999.

General Notes:

1. Original total of 70 SP/SSW units, numbered SP 7608-7627, SSW 7628-7657, and SP 7658-7677; 65 units went to UP at merger; SP retired five units (SP 7612, 7618, SSW 7643, 7646, and 7650) prior to the merger.
2. Of 65 units that went to UP at merger, nine units were assigned UP numbers 5201-5209; these 52 units are assigned UP 5275-5326; and four units are assigned UP numbers 5349-5352.
3. UP 5310 (ex SSW 7657) was the first unit in this group, and the first former SSW unit, to be repainted to Union Pacific, completed on 19 May 1997; UP 5283 (ex SP 7627) was the last, completed on 14 April 1998.
4. Assigned UP 5275-5326 in September 1997, five units (above) renumbered; assigned UP 1375-1426 in December 1999.

General Notes:

1. Built as WP 3554, part of 15-unit group numbered WP 3545-3559; renumbered to UP 909 on 16 December 1985 (part of UP 905-914 group); renumbered to UP 2911 on 9 April 1996 (part of UP 2908-2916 group); renumbered to UP 5318 on 13 March 1997 (part of UP 5315-5323 group).
2. Entire 15-unit group assigned UP 900-905 and 906-914 in December 1983; six units (UP 900-905) converted to road slug control units and renumbered UP 3002-3007 beginning in December 1990, leaving nine units in group.
3. 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; assigned UP 9986-9994 in August 2001.

General Notes:

1. Built as SP 7955, part of 20 SP units, numbered SP 7940-7959; 19 units went to UP at merger; SP retired 7957 prior to the merger.
2. Of 19 units that went to UP at merger, this unit is part of the 14 units assigned UP numbers 5327-5340, the other five units assigned UP 5353-5357.
3. Equipped to operate with former SP road slugs.
4. Entire 14-unit group assigned UP 5327-5340 in September 1997; assigned UP 1427-1440 in December 1999.

General Notes:

1. Built as D&RGW 3095, part of 37 D&RGW units, numbered D&RGW 3094-3130; 35 units went to UP at merger; SP retired two units (D&RGW 3108 and 3115) prior to the merger.
2. Of 35 total units that went to UP at merger, 31 units assigned UP 5242-5272 (not in D&RGW sequence), and this unit and three others assigned UP 5345-5348 (not in D&RGW sequence).
3. Entire four-unit group assigned UP 5345-5348 in September 1997, one unit (5347) renumbered; assigned UP 1445-1448 in December 1999.

General Notes:

1. Original total of 20 SP units, numbered SP 7940-7959; 19 units went to UP at merger; SP retired 7957 prior to the merger.
2. Of 19 units that went to UP at merger, 14 units are assigned UP numbers 5327-5340, and this unit and four others assigned UP 5353-5357.
3. Equipped to operate with former SP road slugs.
4. UP 5353 (ex SP 7941) was the first of this group to be repainted to Union Pacific, completed on 5 January 1998.
5. Entire five-unit group assigned UP 5353-5357 in September 1997, one unit (5353) renumbered; assigned UP 1453-1457 in December 1999.

General Notes:

1. Built as WP 3558, part of 15-unit group numbered WP 3551-3559; renumbered to UP 913 on 13 December 1985 (part of UP 905-914 group); renumbered to UP 2915 on 17 April 1996 (part of UP 2908-2916 group); renumbered to UP 568 on 8 July 1996 (part of UP 561-569 group); renumbered to 5368 on 21 May 1999 (part of UP 5361-5369 group).
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 renumbered (1461); assigned UP 9986-9994 in August 2001.
3. Unit history:

General Notes:

1. Total of 65 units SP units went to UP at merger, 20 numbered for SSW and 45 numbered for SP.
2. Built as standard GP40s in the period May 1966 through December 1971 for the owners shown in the "First Number" column, below; all were remanufactured as GP40M-2s in November 1990 through June 1991 by Morrison Knudsen at its Boise, Idaho, and Mountaintop, Pa., locomotive shops.
3. All 65 units were completed with standard dynamic braking and PTC (Positive Traction Control) wheel-slip control system, along with SP-standard features such as roof-mounted beacon lights, air conditioning, ditch lights, snowplow, and improvements to the cab interiors.
4. A total of nine units (eight units former MKT units, and one former CRI&P unit) were built without dynamic braking and the feature was added as part of the MK remanufacturing.
5. UP 5371 (ex SP 7101) was the first of this group to be repainted to Union Pacific, completed on 8 September 1997.
6. Entire 65-unit group assigned UP 5370-5434 in September 1997, one unit (UP 5371) renumbered; assigned UP 1470-1534 in December 1999.
7. Unit history:

General Notes:

1. Equipped with special high adhension HT-B trucks.
2. All six original units had a bolster centerline of 34 feet, 10-3/4 inches; the trucks had standard 40-inch wheels and a wheelbase of 117-1/2 inches; the noses were EMD's 88 inches long version.
3. Built as UP 9000-9005, renumbered to UP 90-95 in May and June 1985; renumbered to UP 954-959 in January 1989 through January 1990, UP 956 retired in November 1997; assigned UP 5500-5505 in 1997, two units renumbered in June and November 1997; assigned UP 9994-9998 in December 1999, none renumbered prior to retirement of five remaining units in May and June 2001.

General Notes:

1. Original total of 50 C&NW units, numbered C&NW 5050-5099 (the first GP50s built); 48 units went to UP at merger; C&NW retired two units (C&NW 5051 and 5096) prior to the merger.
2. Renumbered from C&NW series to UP series out of C&NW sequence due to different mechanical configuration.
3. Of the 48 units to UP at merger, 15 were renumbered to the UP 900-947 group in June 1995 through June 1996 (UP 904, ex C&NW 5055, was the first, completed on 23 June 1995, and UP 921, ex C&NW 5079, was the last, completed on 11 June 1996).
4. Of the 48 units to UP at merger, 46 units were renumbered to the UP 5510-5557 group in June 1996 through November 1997 (UP 5542, ex UP 933, C&NW 5056, was the first, completed on 26 June 1996 (six units were overhauled and repainted by Boise Locomotive Co., Boise, Idaho, with the remainder being completed by UP at Jenks Shops in North Little Rock, Arkansas.), and UP 5526, ex UP 916, C&NW 5072, was the last, completed on 10 November 1997).
5. Assigned UP 900-947 in June 1995, 15 units renumbered; assigned UP 5510-5557 in June 1996, 46 units renumbered; assigned UP 1610-1657 in December 1999, seven units renumbered prior to all 48 units being retired in September and November 2002.
6. Individual unit histories:

Notes:

1. UP 901 (assigned UP 5511, then UP 1611) was renumbered directly to UP 1611 on 1 April 2002; UP 1611 was retired on 30 November 2002 at the same time as the other 47 units.
2. UP 913 (assigned UP 5523) was retired on 30 November 2002 at the same time as the other 47 units.
3. UP 5530 (ex C&NW 5078) was wrecked on 25 October 1997 at West Junction (Houston), Texas, scrapped at wreck site.