Union Pacific Diesel Roster (1934-2009)
Index For This Page
This page was last updated on December 31, 2018.
Modern Era Roster Data (2000-2009)
Modern Era Index -- (all units 2000-2009) An index page to Union Pacific's diesel locomotive fleet during the Modern Era that began in the year 2000, stemming from the December 1999 renumber plan that called for the general renumbering of over 3,700 locomotives to accommodate the arrival of 1,000 SD70Ms beginning in 2000. Includes all new units and units retired between 2000 and 2009. (Will not be updated after June 1, 2009)
For a roster that is updated regularly and kept current, see R. Craig's UP listing.
UPY Units -- An index page to all of Union Pacific's recent, beginning in 2000, UPY (Union Pacific Yard) units, including the UPY 900 series yard slugs and road slugs.
Heritage Fleet Diesel Locomotives -- Information about the diesel locomotives UP has kept to honor its heritage, includes information about UP 949, 951, 963B and 6936.
Fuel Tenders -- Information about UP's natural gas tenders (UPT 1 and 2), and diesel fuel tenders (UPT 5 to UPT 8).
Earlier Roster Data
Late Merger Era Index -- (1995-1999) An index page to Union Pacific's diesel locomotive fleet during the 1995-1999 Late Merger Era, including the UP control of C&NW in 1995, and control of SP (including D&RGW and Cotton Belt) in 1996.
Early Merger Era Index -- (1983-1994) An index page to Union Pacific's diesel locomotive fleet during the 1983-1994 Early Merger Era, including the UP control of MP and WP in 1983, and control of MKT in 1988.
Classic Era Index -- (1934-1982) An index page to Union Pacific's diesel locomotive fleet during the 1934-1982 Classic Era.
Yard Slugs, Road Slugs, and Miscellaneous Units -- An index page to all of Union Pacific's yard slugs, road slugs and other miscellaneous units prior to the UPY series. Includes the GE 44 ton unit and the all-electric E-100.
Streamliner Locomotives -- (1934-1953) An index page to Union Pacific's Streamliner locomotives, in service 1934-1953. (Includes links to E7, E8 and E9 information)
General Roster Notes -- An web page with information about these on-line rosters, and the model designations used, along with a brief discussion of how builder dates are presented.
Diesel Roster Changes -- An index page for changes to UP's diesel locomotive roster, from 1996 through 2000. (Please note that all of these changes have all been incorporated into the roster listings themselves.)
Switchers and Slugs -- An index page of edited and updated text originally used in 1996 for the publication of "Union Pacific Switchers and Slugs", authored by Don Strack and published in 1996 by Withers Publishing Co.
"Serves All The West" -- A history of Union Pacific dieselization, from 1934 to 1982. An edited and updated version of the text originally used in 1999 for Diesels of the Union Pacific, 1934-1982, The Classic Era, Volume 1 (ISBN 1-881411-24-9), and Diesels of the Union Pacific, 1934-1982, The Classic Era, Volume 2 (ISBN 1-881411-29-X), both by Don Strack (Withers Publishing Co., 1999 and 2005) (These two books, which have hundreds of photos, are still available from the publisher, Withers Publishing Co.)
Motive Power Timeline
Full chronologies for Union Pacific's motive power, from 1915 to 2001:
1915-1933 -- Steam Era (Steam only)
1934-1982 -- Late Steam Era and Classic Era (Steam and Diesel)
1983-2001 -- Early Merger Era, Late Merger Era, and Modern Era (Diesel only)
Model Summary -- A page listing of all of the locomotive models on UP, from 1934 through 2002, sorted by builder and type.
Rock Island to UP Index -- An index page to the former Chicago, Rock Island & Pacific (Rock Island) locomotives that were returned to UP in April 1980 upon the shut down of the Rock Island due to its bankruptcy. Included are units assigned new UP road numbers, and units that were not assigned new UP road numbers.
MP to UP Index -- An index page to the former Missouri Pacific locomotives that came to UP during the 1983 control of MP by UP, including MP units both assigned new UP road numbers, and MP units that were not assigned new UP road numbers.
T&P 815 series renumbered to T&P 3115 series -- A cross-reference lsting with the renumber dates of the T&P 815 series SD40-2s, to the T&P 3115 series. Includes dates for C&EI SD40-2s to the C&EI 3139 series.
WP to UP Index -- An index page to the former Western Pacific locomotives that came to UP during the 1983 control of WP by UP. (The roster of all former WP units is also on this same page.)
WP Roster Notes -- Additional information about the WP diesel locomotive fleet after the UP merger.
WP Dispositions -- Dispositions of WP diesel locomotives after the UP merger, up to 1987. (from CTC Board, August 1987)
MKT to UP Index -- An index page to the former Missouri Kansas Texas locomotives that came to UP during the 1988 control of MKT by UP. (The roster of all former MKT units is also on this same page.)
C&NW to UP Index -- An index page to the former Chicago & North Western locomotives that came to UP during the 1995 control of C&NW by UP, including C&NW units both assigned new UP road numbers, and C&NW units that were not assigned new UP road numbers.
For an excellent photo-illustrated, all-time C&NW diesel locomotive roster, see Diesels Of The Chicago & North Western (Withers Publishing Company, 1995) (ISBN 1-881411-07-0)
SP to UP Index -- An index page to the former Southern Pacific, Cotton Belt (SSW), and Denver & Rio Grande Western locomotives that came to UP during the 1996 control of SP by UP, including SP, SSW, and D&RGW units both assigned new UP road numbers, and SP, SSW, and D&RGW units that were not assigned new UP road numbers.
Steam Locomotive Roster
Steam Locomotives Roster -- A full and complete roster listing of Union Pacific's steam locomotives from 1864 to 1962.
Gordon McCulloh and I have pooled our resources and put together an all-time roster listing of Union Pacific's steam locomotives, from 1864 to 1962, including all of the road's predecessors and subsidiaries of the same time period.