page_title: Union Pacific Railroad
section_title: Merger partner locomotives
hierarchical_section_title: Union Pacific Railroad / Locomotives and rolling stock / Paint and colors / Merger partner locomotives
caption_attribution_description: Union Pacific Railroad #588, an EMD GP38-2. This is an ex Southern Pacific Railroad unit. Photographed at Anaheim, California, USA on February 6, 2005 by User:Morven.
context_page_description: The Union Pacific Railroad, legally Union Pacific Railroad Company and simply Union Pacific, is a freight-hauling railroad that operates 8,300 locomotives over 32,200 miles routes in 23 U.S. states west of Chicago and New Orleans. The Union Pacific Railroad system is the second largest in the United States after BNSF and is one of the world's largest transportation companies. The Union Pacific Railroad is the principal operating company of the Union Pacific Corporation, both headquartered in Omaha, Nebraska. The president of Union Pacific since 2015 is Lance Fritz.
  Founded in 1862, the original Union Pacific Rail Road was part of the First Transcontinental Railroad project, later known as the Overland Route. The railroad was absorbed by the Union Pacific Railway in 1880, which was absorbed by the Union Pacific Railroad in 1897. Over the next century, UP absorbed the Missouri Pacific Railroad, the Chicago and North Western Transportation Company, the Western Pacific Railroad, the Missouri–Kansas–Texas Railroad and the Chicago, Rock Island and Pacific Railroad.
context_section_description: Until 2017, UP operated some locomotives still in the former railroads' paint. In addition, some locomotives were renumbered by UP, varying in the degree of the previous railroads' logos being eradicated, but always with a yellow patch applied over the locomotive's former number and a new UP number applied on the cab. This allowed UP to number locomotives into its roster without spending the time and money necessary to perform a complete repaint. In May 2015, UP rostered 212 "patches", consisting of:
  22 Chicago and North Western (whose CNW logos have been hidden by the "patches"),
  174 Southern Pacific (AC4400CW, GP40-2, MP15AC, and GP60)
  14 St. Louis Southwestern (GP60)
  2 Denver and Rio Grande Western (GP60)
  While not technically a predecessor locomotive in the traditional sense, UP also rostered a single SD40-2 (3564) still in the 1970s paint scheme, not counting DDA40X No. 6936, which is part of the Union Pacific Heritage Fleet.
  In 2017, Union Pacific decided to repaint all locomotives not in the current corporate colors. As of March 2018, only 41 locomotives remained unpainted.
caption: A former Southern Pacific GP38-2 locomotive renumbered with UP "patch" markings
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