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MoPac Diesel Power
From Bluebirds to Canaries - UP Renumberings

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Have you ever noticed that SD40-2 without dynamic brakes, or the B23-7 with the distinctive rear hood passing by on your local UP line? It's a good bet they both share a MoPac heritage. There's a way to find out -see the information below. Print the chart out and take it along with you on your next train-chasing trip. Happy Hunting.

Roster based upon UPRR data supplied Jan. 1, 2001 and updated subsequently. Note that two sets of numbers may be supplied below when source information is in conflict. Renumbering of all locomotives is expected to be completed by 2002.

Former MoPac 2254 pauses between jobs at its Union, Nebraska yard. The GP38-2 has been newly re-numbered by Union Pacific. 3/31/01

The UP Trace for Locos and Equipment is no longer available
(UPRR-Public Equipment Trace)

Also see MoPac Power: Where Are They Now?
for a unit-by-unit list


UP Locomotive Renumberings - 1980's and 1999-2002 / Updated April 2002
Union Pacific December 1999-2002 Renumbering Plan
New Union Pacific
Numbering
Union Pacific 1980's Numbering
Final Missouri Pacific Numbering
Model
Quantity
Notes
UP 100-184 UP 100-166,
UP 170-184
MP 4600-4666,
MP 4670-4684
B23-7 80 128, 134, 167-69 gone
UP 200-254 UP 200-254 MP 4800-4854 B30-7A 53 216, 255-256 gone
UP 257-259 UP 257-259 MP 4667-4669 B23-7M 3 -
Class divided - See Below 1800-1828*
2074-2334#
2009-2073,
2074-2334
GP38-2 - *A large number of this class were sold to GTW.
#Some units retired.
UP 280 UP 2166 MP 2166 GP38-2 1  
UP 300-328
UP 330-348
UP Various MP Various GP38-2 -  
UP 349-363 UP 2076-2108 MP 2076-2108 GP38-2 -  
UP 611-834 UP 2111-2334 MP 2111-2334 GP38-2 223 No 666 slot; 2185 gone
UP 890-898 UP 2390-2398 CEI 100-108 GP38-2 9 -
UP 960-989
UP 1658-1687
UP 960-989 MP 3500-3529 GP 50 -  
UP 1555-1714 UP 1555-1714 MP 1555-1714 GP15-1 -  
UP 1715-1744 UP 1715-1744 MP 1715-1744 GP15AC -  
UP 1800-1828 UP 1800-1828 MP 2009-2073 GP38-2 -  
UP 1830-1846 UP 1830-1846 MP 2075-2110 GP38-2 16  
UP 2076-2108 UP 2076-2108 MP 2076-2108 GP38-2 14  
UP 2111-2334 UP 2111-2334 MP 2111-2334 GP38-2 -  

Union Pacific Current
Numbering
Union Pacific 1980's Numbering
Final Missouri Pacific Numbering
Model
Quantity
Notes

(UP 7942-7999) or
UP 2603-2659

UP 600-659 or
UP 9000-9059

MP 9000-9059 C36-7 - Entire class delivered in UP colors. Off roster
Class divided - See following UP 4090-4114,
UP B4115-B4321
MP 3090-3321 SD40-2 - "B" indicates conversion to B-unit. Some from this class have been retired/sold.
UP 2816-2823 UP Various MP Various SD40-2 - modified by UP to SD 38-2
UP 2825-2829 UP Various MP Various SD40-2 - modified by UP to SD 38-2
UP 2836-2846 UP Various MP Various SD40-2 - modified by UP to SD 38-2
- UP 3900-3904
MP 6000-6004
SD40-2(c) 5, all retired  
UP 3905-3973 UP 3905-3973 MP 6005-6073 SD40-2(c) 64, 5 retired 3912 & 28 gone
9885-9950 UP 4115-4163 MP 3115-3163 SD40-2 59 or 27, 7 retired 7 rebuilt to SD38-2R, #9949 blank
- UP 4202-4321 MP 3202-3321 SD40-2 46, 42 retired 28 rebuilt to SD38-2R
(UP 5000-5059) UP 5000-5059 MP 5000-5059 SD50 12 retired Entire class delivered in UP colors. Many gone.
UP 7942-7999 UP 400-531 MP 9000-9059 C36-7 - Entire class delivered in UP colors.
UP 9000-9059 UP 9000-9059 MP 9000-9059 C36-7 - Entire class delivered in UP colors.
UP 9881 UP 5001 MP 5001 SD50 1 to be numbered back to UP 5001. Entire class delivered in UP colors.
UP 9882-9950 UP 4115-4320 MP 3115-3320 SD40-2 7 retired  

Union Pacific Current
Numbering
Union Pacific 1980's Numbering
Final Missouri Pacific Numbering
Model
Quantity
Notes
UPY 451 UP 1666 MP 1666 GP15-1 1 numbered 451 to avoid the 666 number
UPY 555-714 UP 1555-1714 MP 1555-1714 GP15-1 159 or 100 UPY 1666 is left blank
UPY 715-744 UP 1715-1744 MP 1715-1744 GP15AC 30 -
UPY 816-823 UP 2816-2823 MP Various SD40-2 SD38-2 8 ex-MP SD40-2's converted to SD38-2 by UP
UPY 825-829 UP 2825-2829 MP Various SD40-2 SD38-2 5 SD40-2's converted to SD38-2
x UPY 836-846 UP 2836-2846 MP Various SD40-2 SD38-2 11 SD40-2's converted to SD38-2
UPY 847-857 UP 2836-2846 and  4307 MP Various SD40-2 SD38-2 - SD40-2's converted to SD38-2
UPY 903-925 UP S 9-531 MP 1401-1423 Yard Slug 23, 3 retired -
UPY 1330-1354 UP 1330-1354 MP 1530-1554 MP15DC 25 -
UPY 1356-1392 UP 1356-1392 MP 1356-1392 MP15DC 37 -

Union Pacific Current
Numbering
Union Pacific 1980's Numbering
Final Missouri Pacific Numbering
Model
Quantity
Notes
- UP 557-570 MP 4536-4536 U23B - Some units retired/sold during merger. All retired.
- UP 651, 662, 665
UP 900-907
MP 651, 662, 665
MP 900-907
GP40 - Ex-WP assigned to MP by UP after merger. All retired.

Total ex-MP on UP System
Total at Merger
Total as of Jan. 1, 2001
1,568 units
987 units


The current UP re-numberings of former MP SD40-2 & GP38-2 units, and the modification of many SD40-2's to 38-2s has caused the division of these original classes.

Just before Christmas 1999, a UP hump engine bearing the reporting marks "UPY" rolled out of North Little Rock's paint shop, the first to bear new road marks for low-horsepower units and part of a larger effort to renumber morethan 3,000 locomotives.

The effort involves changing the road marks on CNW, DRGW, SP and SSW road units to "UP," he said. All switcher-type units, plus hump engines andGP15s, will be assigned "UPY" reporting marks. Most of these units also will have new road numbers assigned.

The accelerated renumbering is expected to take up to three years.

The National Motor Freight Traffic Association (NMFTA) granted UP a one-time, special exemption for the new UPY reporting marks designation, tobe applied to about 700 switchers, GP15s and SD38-2s. That, in turn, freesup 673 UP number slots for road units.

Information on the reporting marks and renumbering project will be made available, probably on the UP Employee website.

As of 1994, UP had retired the entire class of U30C's and a small number of the SD40's were kept in storage, with the rest sold.

In total, 395 ex-MP engines were painted into yellow & gray.

The last blue Missouri Pacific engine (GP38-2, MP 2103) on the Union Pacific system was painted in UP colors by August 1994 - though there is a slim possibility of units sold to other rail lines that have eluded repainting.

The information in the above chart is subject to retirements, wrecks and changes by UP.

(sources from various sites and Don Strack)

 

 

 

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Sources:
Missouri Pacific Diesel Power
by Kevin EuDaly

UPRR
Don Strack



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