MotivePower Industries

Diesel & Gen-Set Locomotives		 Your Digital Image Here?
Reporting Marks: MKCX, MPEX & MPI
Roster by: R. Craig
"Rebuilt": 11 Jan. 2015
 Photograph by Dan Risdon

XXXXXXXDemonstrators & Prototypes

Road No. MPI Model Serial No. Date Notes
MPEX 244 MP21B 0107-01 5/08 GenSet
SP 501-503 MK5000C 3092-01 to 03 8/94 Rebuilt and sold to Utah Rwy 5001-5003
MPEX 1501 MP1500D 22069 7/56 Demonstrator; built from DRGW GP9 5932
MPEX 1502 & 1503 MP1500D 21362, 16456 4/56, 4/52 Demonstrators; built from SP 1802 & C&NW 4207 < nee SP GP9 5664 & CRIP GP7 1309
MPEX 1504 & 1505 MP1500D 20759, 23865 12/55, 1/58 Demonstrators; built from CC&P GP10 8121 & IC GP10 8186 < nee IC GP9 9121 & 9365
MPEX 1506 MP1500D -- -- Demonstrator
GE 2001 & 2002 B23-7R 38397, 38403 7/89 "Super Seven" demonstrators (built in association with General Electric) from ex-WP U23B 2251 & 2257
MPEX 2001 MP2000D 30180 8/98 Demonstrator; built on frame from SP 6668 < SP GP35 7771
MPEX 2002 MP2000D 2396-02 5/98 Demonstrator
MPEX 2003 MP2000D 1698-01 -- Demonstrator
MPEX 2004 & 05 5 MP2000D -- Demonstrators
GE 3000-3002 C30-7R 38214, 38215, 40961 2, 5, 7/89 "Super Seven" demonstrators (built in association with General Electric) from ex-Sou U33C 3811 & 3812 and UP U30C 2956
MPEX 5000 SD50-3 32557 10/99 Prototype; MKCo 5000 (built from ATSF SD45B 5501 with safety cab)
MKCX 5001 TE50-4S -- 9/79 Prototype; ex-UP GP9 278 (EMD 19875, 9/54)
MPEX 6201 MP2000C 29842 1/65 Demonstrator; built on frame from SP 2958 < 6951 < nee SP SD35 4828

XXXXXXXLease Locomotives

Road No. Model (& Bldr) Serial No. Date Notes
MPEX 243 SW1m (EMD) 1401 10/41 Shop switcher, Boise; ex-EJ&E SW1 243
MKCX 319 S6 (Alco) 82294 11/56 Ex-South Buffalo 43
MKCX 628 & 636 SD40 (EMD) 35840, 38363 3/71 Ex-KCS 628 & 636
MPEX 750-752 SD40u (EMD) --, 36751, 34969 --, 7/70, 7/69 Leased to EJ&E; ex-Utah Ry < MKCo 750-752 < nee --, C&O 7522 & WM 7447
MPI 1513 & 1514 SW1500 (EMD) 34497, 35286 12/68, 11/69 Ex-NS/2323 & 2333 < nee Southern 2323 & 2333
MPI 2001(1st) GP38M-4 (EMD) 28875 2/64 Rebuilt from SP GP35E 6312 < SP GP35 7448
MKCX 4301 GP40 (EMD) 34852 X/69 Ex-GATX 3729 < nee B&O 3729
MKCX 4302 GP40 (EMD) 36170 2/70 Ex-HLCX < ICG 3074 < nee IC 3074
MKCX 4303 GP40 (EMD) 37193 3/71 Ex-CSX 6545 < nee B&O 3769
MKCX 4304 GP40 (EMD) 31797 6/66 Ex-SBD 6696 < SCL 1543 < nee SAL 628
MKCX 4305 GP40 (EMD) 38567 8/71 Ex-CSX 6842 < nee C&O 4087
MKCX 5348, 5349 SD45u (EMD) 32562 12/66 Ex-ATSF SD45u 5348, 5349 < ATSF 5567, 5586 < nee ATSF SD45 1867, 1886
MKCX 5353, --, 5355 SD45u (EMD) 32540, --, 32524 12,--,11/66 Ex-ATSF SD45u 5353, --, 5355 < ATSF 5564, --, 5548 < nee ATSF SD45 1864, --, 1848
MKCX 5356-5358 SD45u (EMD) 32062, 32536, 32509 6, 11, 10/66 Ex-ATSF SD45u 5356-5358 < ATSF 5506, 5560, 5533 < nee ATSF SD45 1806, 1860, 1833
MKCX 5359, --, 5361 SD45u (EMD) 32067 6/66 Ex-ATSF SD45u 5359,--, 5361 < ATSF 5543, --, 5511 < nee ATSF SD45 1843, --, 1811
MPEX 5364 SD45u (EMD) 32535 11/66 Ex-ATSF SD45u 5364 < ATSF 5559 < nee ATSF SD45 1859
MKCX 5365-5367 SD45u (EMD) 32512, 32508, 32534 10, 10, 11/66 Ex-ATSF SD45u 5365-5367 < ATSF 5536, 5532 & 5558 < nee ATSF SD45 1836, 1832 & 1858
MKCX 5368-5370 SD45u (EMD) 32531, 32083, 32082 11, 8, 8/66 Ex-ATSF SD45u 5368, 5369 & 5370 < ATSF 5555, 5527 & 5526 < nee ATSF SD45 1855, 1827 & 1826
MKCX 5371-5373 SD45u (EMD) 36495, 36497, 36500 6/70 Ex-ATSF SD45u 5371-5373 < nee ATSF SD45 5618, 5616 & 5621
MPEX 5374-5376 SD45u (EMD) 36499, 36491, 36493 7, 6, 6/70 Ex-ATSF SD45u 5374-5376 < nee ATSF SD45 5620, 5622 & 5624
MPEX 5377 SD45u (EMD) 32067 6/66 Ex-ATSF SD45u 5377 < nee ATSF SD45 5619
MKCX 5401 & 5402 C636 (Alco) 6008-01 & 02 11/68 Ex-Alco demonstrators 636-1 & 636-2
MKCX 5403 C636 (Alco) 6008-03 11/68 Ex-Alco demonstrators 636-3
MKCX 5525-5527 F45u (EMD) 34036, 34048, 34044 6/68 Scrapped; ex-ATSF F45u 5950, 5952 & 5958 < nee ATSF 1900, 1902 & 1908
MKCX 5528 & 5529 F45u (EMD) 34068, 34054 6/68 Scrapped; ex-ATSF F45u 5962 & 5968 < ATSF 5912 & 5918 < nee ATSF 1912 & 1918
MKCX 5530 & 5531 F45u (EMD) 34055, 34046 6/68 Scrapped; ex-ATSF F45u 5969 & 5960 < ATSF 5919 & 5910 < nee ATSF 1919 & 1910
MKCX 5900 series F45u (EMD) There were several 5900 series sold to MKCX, but they retained their ATSF lettering, e.g. 5978-5980
MKCX 5951 & 5954 F45u (EMD) 34047, 34040 6/68 Scrapped; ex-ATSF F45u %951 & 5954 < ATSF 5901 & 5904 < nee ATSF 1901 & 1904
MKCX 6101 C425 (Alco) 3403-02 2/65 Ex-CR 2423 < PC 2423 < nee PRR 2423
MKCX 8301 SD40M-2 (EMD) 36808 2/71 Blt from ex-SP SD45X 9503 < nee EMD SD45X 4201
MKCX 8303 SD40 (EMD) 32090 9/66 Blt from ex-CSX 8303 < SBD 8303 < nee EMD L&N 1227
MKCX 8402 & 8403 SD40 (EMD) 31930, 31931 8/66 Blt from ex-CSX 8403 & 8403 < C&O 7551 & 7552 < NEE C&O 7451 & 7452
MPI 9000-9029 SD40M-2 (EMD) (See NOTE A) -- (See NOTE A); sold to Helm
MKCX 9030-9036 SD40M-2 (EMD) (See NOTE B) -- (See NOTE B); sold to Helm
MPI 9037-9057 SD40M-2 (EMD) (See NOTE B) -- (See NOTE B); sold to Helm
MKCX 9401 SD40 (EMD) 37652 9/71 Ex-UP 3096
MKCX 9409 & 9410 SD40 (EMD) 37651, 37652 9/71 Ex-UP 3095 & 3096
MKCX 9411 SD40 (EMD) 37909 9/71 Ex-UP 3103
MKCX 9502, 9504 SD45u (EMD) 36379,-- 8/70, - EX-BN 6490, --
MKCX 9532 SD45u (EMD) 35489 10/69 EX-BN 6689 < nee SLSF SD45 941
MPEX 9535 SD45u (EMD) 32515 10/66 Ex-ATSF SD45u 5347 < ATSF 5539 < nee ATSF SD45 1839
MKCX 9536-9538 SD45u (EMD) 32553, 32511, 32085 12, 10, 8/66 Ex-ATSF SD45u 5350-5352 < ATSF 5577, 5535 & 5529 < nee ATSF 1877, 1835 & 1829
MKCX 9539-9541 SD45u (EMD) 32069, 32074, 32532 11, 7, 7/66 Ex-ATSF SD45u 5354, 5360 & 5362< ATSF 5514, 5518 & 5556 < nee ATSF 1814, 1818 & 1856
V04, V08 & V10 RP39-2C (EMD) 39250, 38566, 38568 12, 7, 9/71 Ex-Virginia Rail Express (same numbers) < nee C&O GP40 3784, 4086 and B&O 4016
Follow this link for information on Morrison Knudson Corporation power.

XXXXXXXNotes & Credits

NOTE A: Lineage of 9000-9029 (along with serial No. & date)
9001: ex-N&W 2965/ITC 2305(SD39) (34487, 5/69) 9016: ex-UP 3074 (32426, 12/66)
9002: ex-MK 8302/SP 8820 (32011, 8/65) 9017: ex-SP 9092 (32427, 4/69)
9003: ex-MK 8303(1st)/SP 8402 (31562, 1/66) 9018: ex-SP 8935 (33632, 2/68)
9004: ex-SP 9015 (34383, 2/69) 9019: ex-SP 9096 (34931, 4/69)
9005: ex-SSW 9052 (34420, 1/69) 9020: ex-SP 9090 (34925, 4/69)
9006: ex-SP 9013 (34381, 2/69) 9021: ex-UP 3078 (32430, 12/66)
9007: ex-SSW 8968 (33628, 2/68) 9022: ex-MK 8304/UP 3059 (34211, 10/66)
9008: ex-SP 8988 (34356, 1/69) 9023: ex-CNW 6546/CR 6223/PC 6223/PRR 6223 (33847, 1/68)
9009: ex-SP 9007 (334375, 2/69) 9024: ex-CNW 6508/CR 6180/PC 6180/PRR 6180 (33814, 12/67)
9010: ex-SP 9037 (34405, 3/69) 9025: ex-CNW 6570/BN 6451/GN 421 (33788, 7/68)
9011: ex-SP 9107 (35199, 10/69) 9026: ex-CNW 6580/BN 6461/CB&Q 520 (34555, 1/69)
9012: ex-SP 9083 (34918, 3/69) 9027: ex-CNW 6510/CR 6182/PC 6182/PRR 6182 (33816, 12/67)
9013: ex-SP 8996 (34364, 2/69) 9028: ex-CNW 6521/CR 6194/PC 6194/PRR 6194 (33828, 1/68)
9014: ex-UP 3055 (32407, 10/66) 9029: ex-CNW 6517/CR 6190/PC 6190/PRR 6190 (33824, 1/68)
9015: ex-UP 3072 (32424, 12/67) -
NOTE B: Lineage of 9030-9057 (along with serial No. & date)
9030: ex-CNW 6501/CR 6172/PC 6172/PRR 6172 (33806, 12/67) 9044: ex-CSXT 8422/WM 7571/WM 7471 (32135, 8/66)
9031: ex-MK 8305/SP 9098 (34933, 4/70) 9045: ex-KCS 601 (32102, 10/66)
9032: ex-CNW 6516/CR 6189/PC 6189/PRR 6189 (33823, 1/68) 9046: ex-MK 4910/KCS 634 (35846, 3/71)
9033: ex-CNW 6472/BN 6472 (363661, 6/70) 9047: ex-KCS 614 (33958, 8/68)
9034: ex-CNW 6505/CR 6176/PC 6176/PRR 6176 (33810, 12/67) 9048: ex-PLM 3000/MP 3000/MP 700:2 (32968, 3/67)
9035: ex-CNW (6545)/CR 6222/PC 6222/PRR 6222 (33846, 1/68) 9049: ex-PLM 3052/UP 3052 (32404, 10/66)
9036: ex-CNW 6550/CR 6227/PC 6227/PRR 6227 (33851, 12/67) 9050: ex-PLM 3058/MP 3058/MP 758 (35729, 1/70)
9037: ex-CSXT 8313/SBD 1237/L&N 1237 (35951, 4/70) 9051: ex-PLM 3041/UP 3041/EMD 434B(SD40X (29874, 3/65))
9038: ex-CSXT 8307/SBD 1231/L&N 1231 (34760, 4/69) 9052: ex-PLM 3018/UP 3018 (31432, 3/66)
9039: ex-CSXT 8311/SBD 1235/L&N 1235 (35949, 4/70) 9053: ex-PLM 3104/UP 3104 (37910, 9/71)
9040: ex-CSXT 8325/SBD 1249/L&N 1249 (38203, 5/71) 9054: ex-PLM 3019/UP 3019 (31433, 3/66)
9041: ex-CSXT 8401/C&O 7550/C&O 7450 (31921, 8/66) 9055: ex-PLM 3004/MP 3004/MP 704:2 (32972, 3/67)
9042: ex-MK 4909/KCS 630 (35842, 3/71) 9056: ex-PLM 3029/MP 3029/MP 729:2 (31579, 4/66)
9043: ex-KCS 619 (33963, 8/68) 9057: ex-PLM 3021/UP 3021 (31435, 3/66)
Morrison-Knudsen entered the railroad industry in 1971 as a builder of "kit-bashed" locomotives; its base of operations was a locomotive shop in Boise, Idaho. By establishing subsidiary Motive Power International in 1989, the company expanded into the buying, selling and/or leasing of locomotives; the days of being simply a locomotive re-manufacturer had passed. The name of the subsidiary company was changed in 1994 to MK Rail. Another name change occurred two years later, when Wabtec purchased the locomotive supplier. From that point forward, it became MotivePower Industries. The locomotive manufacturing component of the business has long been referred to as the Boise Locomotive Works.

This roster includes prototype, test, and demonstrator locomotives produced by Morrison Knudsen, along with its fleet of leased locomotives. A special recognition goes to Norm Anderson, who compiled the M-K / MK Rail rosters for Diesel Era magazine listed below.

Thanks to the following people for providing data, corrections and revisions: Norm Anderson, Ryan Ballard, Joseph Belote, Simon Jacques Belanger, Bryan Jones, Tom Lundeen, Tom Keeping, Stev Knowles, John Komanesky, Kevin W. Owenby, Jerry Reynolds, Ray Sabo, Thomas T. Warshaw III and Dick Will.

Reference sources: Extra 2200 South Locomotive Newsletter (issues: 87, 100, 101, 102, 103 & 104); Ken Ardinger's LocoNotes II newsletter (issues: 235 & 239); ATSF F45 & SD45 Power Rosters at www.atsfrr.com; Diesel Era Magazine (issues: 9-10/1991, 7-8/1992, 7-8/1993, 5-6/1994, 1-2/1996, 5-6/1998 and 5-6/1999.

Locomotive data provided by Michael Richmond and R. Craig.

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