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65-735: The Los Angeles Limited was a named passenger train in the United States. It was operated by the Union Pacific Railroad from 1905 to 1954. Beginning in 1905 the Los Angeles Limited was the flagship train of the Union Pacific between Chicago and Los Angeles . (From Chicago to Omaha the train was handled by the Chicago and North Western Railway ). Union Pacific, which owned the train, completed

130-695: A 2-digit code indicating the vehicle's register country . The registered keeper of a vehicle is now indicated by a separate Vehicle Keeper Marking (VKM), usually the name of the owning company or an abbreviation thereof, which must be registered with the Intergovernmental Organisation for International Carriage by Rail (OTIF) and the European Union Agency for Railways (ERA) and which is unique throughout Europe and parts of Asia and Northern Africa. The VKM must be between two and five letters in length and can use any of

195-548: A credit crunch, but not bankruptcy. As boom followed bust, the Union Pacific continued to expand. A new company, with dominant stockholder Jay Gould , purchased the old on January 24, 1880. Gould already owned the Kansas Pacific (originally called the Union Pacific, Eastern Division, though in essence a separate railroad), and sought to merge it with UP. Through that merger, the original "Union Pacific Rail Road" transformed into "Union Pacific Railway". Extending towards

260-642: A hump. Union Pacific also closed facilities in Kansas City ("Neff yard"), Hinkle, Oregon , and Pine Bluff, Arkansas in 2019. Union Pacific has owned some of the most powerful locomotives. These include members of the Challenger-type (including the 3985 ), and the Northern-type (including the 844 ), as well as the Big Boy steam locomotives (including the 4014 ). Union Pacific ordered

325-464: A hyphen. Some examples: When a vehicle is sold it will not normally be transferred to another register. The Czech railways bought large numbers of coaches from ÖBB. The number remained the same but the VKM changed from A-ÖBB to A-ČD. The UIC introduced a uniform numbering system for their members based on a 12-digit number, largely known as UIC number . The third and fourth digit of the number indicated

390-456: A new Union Pacific "Railroad". In the early 20th century, Union Pacific's focus shifted from expansion to internal improvement. Recognizing that farmers in the Central and Salinas Valleys of California grew produce far in excess of local markets, Union Pacific worked with its rival Southern Pacific to develop a spoilage-resistant rail-based transport system. These efforts came culminated in

455-428: A number of units were repainted with a large, billowing American flag with the corporate motto "Building America" on the side, where the 'UNION PACIFIC' lettering is normally positioned. Until 2017, UP operated some locomotives still in the paint scheme of their former railroads. In addition, some locomotives were renumbered by UP, varying in the degree of the previous railroads' logos being eradicated, but always with

520-700: A predecessor of the CNW, from which the UP inherited it. Similarly, during the breakup of Conrail , the long-retired marks of the Pennsylvania Railroad (PRR) and New York Central Railroad (NYC) were temporarily brought back and applied to much of Conrail's fleet to signify which cars and locomotives were to go to CSX (all cars labeled NYC) and which to Norfolk Southern (all cars labeled PRR). Some of these cars still retain their temporary NYC marks. Because of its size, this list has been split into subpages based on

585-558: A rail safety organization founded in 1970. As of December 2023, the Union Pacific had 7,175 locomotives on its active roster consisting of 42 different models. Union Pacific continues to use a small number of "heritage" steam locomotives and early streamlined diesel locomotives. This equipment is used on special charters (excursions). Union Pacific maintains a fleet of low-emissions locomotives. Most are used in Los Angeles basin rail yards, to satisfy an air quality agreement with

650-483: A two-tone gray paint scheme to match Pullman's lease passenger car equipment which were also being painted in the two-tone gray paint scheme. By 1952, all of Union Pacific's heavyweight passenger cars were painted in the amour yellow and gray to match the rest of the railroad's streamlined passenger cars. During this time, many streamlined and heavyweight cars were seen mixed into the LA Limited's consist, while some of

715-464: A yellow patch applied over the locomotive's former number and a new UP number applied on the cab. That 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: In 2017, Union Pacific decided to repaint all locomotives which were not in the current corporate colors. As of March 2018, only 41 locomotives remained unpainted. From

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780-880: Is named in honor of George H. W. Bush , the US 41st President and is exhibited at the George H. W. Bush Presidential Center at Texas A&M University in College Station, Texas. The locomotive, custom painted in the colors of GWH Bush's Air Force One is the only UP locomotive not painted in traditional Armour yellow. The engine also pulled the president's funeral train on his final journey to College Station in 2018. The Union Pacific system includes hundreds of yards. Most are flat yards used for local switching. Other types of yards include intermodal terminals and hump yards. Most UP intermodal terminals are typically ports, but UP also has inland terminals for transfers to trucks, such as

845-730: Is the principal operating company of Union Pacific Corporation , which are both headquartered at the Union Pacific Center , in Omaha, Nebraska . The original company, the "Union Pacific Rail Road", was incorporated on July 1, 1862, under the Pacific Railroad Act of 1862 . President Abraham Lincoln had approved the act, which authorized railroad construction from the Missouri River to the Pacific to ensure

910-507: The New York Sun , Union Pacific's largest construction company, Crédit Mobilier, had overcharged Union Pacific; the railroad would then pass the inflated costs on to the United States government. To convince the federal government to accept the increased costs, Crédit Mobilier had bribed multiple congressmen. Several prominent UP board members (including Durant) had been involved in the scheme. The ensuing financial crisis of 1873 led to

975-557: The Central Pacific Railroad line, which had been constructed eastward from Sacramento, California . The combined Union Pacific–Central Pacific line became known as the first transcontinental railroad and later the Overland Route . The line was constructed primarily by Irish labor who had learned their craft during the recent Civil War . Under the guidance of its dominant stockholder, Thomas C. Durant ,

1040-720: The Chicago & Northwestern trackage starting in 1936. Disputes over trackage rights and passenger revenues with the C&;NW prompted the UP to switch to the Milwaukee Road for the handling of its streamliner trains between Chicago and Omaha beginning in late 1955. The last intercity passenger train operated by UP was the westbound City of Los Angeles , arriving at Los Angeles Union Station on May 2. Since then, Union Pacific has satisfied its common carrier requirements by hosting Amtrak trains. Many Amtrak and commuter rail routes use Union Pacific rails. This list excludes

1105-580: The Missouri Pacific and Western Pacific railroads, and 1988, the Missouri–Kansas–Texas . By 1993, Union Pacific had doubled its system to 17,385 miles (27,978 km) routes. By then, few large (class I) railroads remained. The same year that Union Pacific merged with the Chicago and North Western (1995), Burlington Northern and ATSF announced merger plans. The impending BNSF amalgamation would leave one mega-railroad in control of

1170-590: The Missouri–Kansas–Texas with UP 1988 , the Chicago and North Western with UP 1995 , the Southern Pacific with UP 1996 , and the Denver and Rio Grande Western with UP 1989 . In October 2005, UP unveiled SD70ACe 4141 , commissioned in honor of George Bush . The locomotive has " George Bush 41" on the sides and its paint scheme resembles that of Air Force One . It was sent into storage in 2007, but returned in 2018 to power Bush's funeral train . It

1235-562: The Missouri–Kansas–Texas Railroad and the Chicago, Rock Island and Pacific Railroad . In 1995, the Union Pacific merged with Chicago and North Western Transportation Company , completing its reach into the Upper Midwest . In 1996, the company merged with Southern Pacific Transportation Company , itself a giant system that was absorbed by the Denver and Rio Grande Western Railroad . The Union Pacific Railroad Company

1300-448: The first diesel streamliner , the largest fleet of turbine-electric locomotives in the world , and the largest diesel locomotives ever built (including 6936 ). The yellow paint scheme was introduced in the spring of 1934. Engineers claimed the visibility of yellow would reduce grade crossing accidents. In 1941, UP introduced its yellow and gray color scheme with red highlights, which remains in use today. The middle two-thirds of

1365-481: The 1906 founding of Pacific Fruit Express , soon to be the world's largest lessee of refrigerated railcars . Meanwhile, Union Pacific worked to construct a faster, and more direct substitute for the original climb to Promontory Summit . In 1904, the Lucin cutoff opened, reducing curvature and grades. The original route would eventually be stripped of track in 1942 to provide war scrap . To attract customers during

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1430-608: The 22% recommendation rating from Glassdoor.com. When Union Pacific bought out the Chicago & North Western in 1995, it inherited the railroad's Metra commuter rail services in the Chicago metropolitan area : the Union Pacific North Line to Kenosha, Wisconsin , Northwest Line to Harvard, Illinois , and West Line to Elburn, Illinois , all of which operate from Ogilvie Transportation Center (the former North Western Station–a name still used by many Chicago residents). In order to ensure uniformity across

1495-513: The 26 letters of the Latin alphabet . Diacritical marks may also be used, but they are ignored in data processing (for example, Ö is treated as though it is O ). The VKM is preceded by the code for the country (according to the alphabetical coding system described in Appendix 4 to the 1949 convention and Article 45(4) of the 1968 convention on road traffic), where the vehicle is registered and

1560-465: The Chicago and North Western Railway pulled the train with an ALCO 4-6-4 Hudson type. Union Pacific Railroad The Union Pacific Railroad ( reporting marks UP , UPP , UPY ) is a Class I freight-hauling railroad that operates 8,300 locomotives over 32,200 miles (51,800 km) routes in 23 U.S. states west of Chicago and New Orleans . Union Pacific is the second largest railroad in

1625-631: The Chicago area commuter rail system, trains are branded as Metra services and use Metra equipment. However, Union Pacific crews continue to operate the trains under a purchase-of-service agreement. In 2023, UP announced its intentions to surrender the control and operation of commuter rail services and trains in Chicago to Metra , however the UP would retain ownership and control of the right-of-ways of former Chicago & Northwestern lines radiating from Chicago. Between 1869 and 1971, Union Pacific operated passenger service throughout its historic "Overland Route". These trains ran between Chicago and Omaha on

1690-581: The Great Depression, Union Pacific's chairman W. Averell Harriman simultaneously sought to "spruce up" the quality of its rolling stock and to make its unique locations more desirable travel destinations. The first effort resulted in the purchase of the first streamlined train : the M-10000 . The latter resulted in the Sun Valley ski resort in central Idaho ; it opened in 1936 and finally

1755-534: The Los Angeles Limited lost its prestigious premier status to the new City of Los Angeles streamliner, which became the new Union Pacific flagship train. The Los Angeles Limited became the secondary Chicago-to-Los Angeles train, but was the only Union Pacific all-Pullman train on that route (the City of Los Angeles streamliner always carried some coaches). After the City of Los Angeles went daily in 1947

1820-599: The Metrolink system—even though it is operated by Amtrak. This is why the reporting mark for CSX Transportation , which is an operating railroad, is CSXT instead of CSX. Private (non-common carrier) freight car owners in Mexico were issued, up until around 1990, reporting marks ending in two X's, possibly to signify that their cars followed different regulations (such as bans on friction bearing trucks) than their American counterparts and so their viability for interchange service

1885-760: The Pacific Northwest, Union Pacific built or purchased local lines to reach Portland, Oregon . Towards Colorado, it built the Union Pacific, Denver and Gulf Railway : a system combining narrow-gauge trackage into the heart of the Rockies and a standard gauge line that ran south from Denver, across New Mexico , and into Texas. The Union Pacific Railway would later declare bankruptcy during the Panic of 1893 . The resulting corporate reorganization reversed Gould's name change: Union Pacific "Railway" merged into

1950-609: The Southern Pacific's Rock Island Golden State Limited . In 1930 the train started carrying coaches for the first time because of the Great Depression . After the more economical secondary train Challenger was introduced in 1935, the train regained its all-Pullman status and once again became a very fine train; in 1936 it was the first Union Pacific heavyweight train to receive air conditioning. But in 1936

2015-405: The Union Pacific", which is painted in a scheme to honor the United States armed forces. On June 6, 2019, Union Pacific unveiled SD70ACe 1111, the "Powered By Our People" unit. In April 2021, Union Pacific repainted an SD70M into a commemorative paint scheme called "We Are ONE" to honor Juneteenth and Pride Month. UP also has a collection of locomotives painted for Operation Lifesaver ,

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2080-637: The United States after BNSF , with which it shares a duopoly on transcontinental freight rail lines in the Western , Midwestern and West South Central United States. Founded in 1862, the original Union Pacific Rail Road was part of the first transcontinental railroad project, later known as the Overland Route . Over the next century, UP absorbed the Missouri Pacific Railroad , the Western Pacific Railroad ,

2145-682: The VKM BLS. Example for an "Einheitswagen" delivered in 1957: In the United Kingdom, prior to nationalisation, wagons owned by the major railways were marked with codes of two to four letters, these codes normally being the initials of the railway concerned; for example, wagons of the Great Western Railway were marked "G W"; those of the London, Midland and Scottish Railway were marked "L M S", etc. The codes were agreed between

2210-541: The acquiring company discontinues the name or mark of the acquired company, the discontinued mark is referred to as a "fallen flag" railway. Occasionally, long-disused marks are suddenly revived by the companies which now own them. For example, in recent years, the Union Pacific Railroad has begun to use the mark CMO on newly built covered hoppers, gondolas and five-bay coal hoppers. CMO originally belonged to Chicago, St. Paul, Minneapolis and Omaha Railway ,

2275-421: The commuter services the company directly operates in Chicago (see above). On June 28, 2004, a UP train collided with an idle BNSF train in a San Antonio suburb . In the course of the derailment, a 90-ton tank car carrying liquified chlorine was punctured. As the chlorine vaporized, a toxic "yellow cloud" formed, killing three and causing 43 hospitalizations. The costs of cleanup and property damaged during

2340-718: The eastern terminal was moved to a location where the Union Pacific could link up with the Mississippi and Missouri Railroad in Iowa. Following the Act's passage, commissioners appointed by Congress began selling stock in the federally chartered Union Pacific Railroad Company. By 1863, Durant had organized the purchase of 2,000 shares, the prerequisite amount of stock sold in order to begin the railroad's construction. The resulting track ran westward from Council Bluffs, Iowa , to meet in Utah

2405-572: The extent that the FRA, in a letter to UP's CEO, said "safety of railroad operations is paramount ... decisions that comprise that fundamental ... are unacceptable. You must ensure that highly trained and experienced personnel perform critical inspections and repairs .... Your railroad (layoffs) are far outpacing any of your Class 1 peers." In 2024 the railway celebrated 150 years of having its headquarters in Omaha. The railway's Big Boy #4014,

2470-448: The first letter of the reporting mark: A railway vehicle must be registered in the relevant state's National Vehicle Register (NVR), as part of which process it will be assigned a 12-digit European Vehicle Number (EVN). The EVN schema is essentially the same as that used by the earlier UIC numbering systems for tractive vehicles and wagons , except that it replaces the 2-digit vehicle owner's code (see § Europe 1964 to 2005 ) with

2535-529: The home country may also be included. The Association of American Railroads (AAR) assigns marks to all carriers, under authority granted by the U.S. Surface Transportation Board , Transport Canada , and Mexican Government. Railinc , a subsidiary of the AAR, maintains the active reporting marks for the North American rail industry. Under current practice, the first letter must match the initial letter of

2600-521: The incident exceeded $ 7 million. Investigations of the Macdona incident revealed several serious safety lapses on the part of the Union Pacific and its employees, including employees not following the company's own safety rules. While the immediate cause of the derailment was the UP crew's "fatigue", chlorine tank cars had been improperly placed near the front of the train, a danger in the case of derailment. Reporting mark In North America ,

2665-431: The local authorities. According to UP's 2007 Annual Report to Investors, at the end of 2007 it had more than 50,000 employees, 8,721 locomotives, and 94,284 freight cars. Broken down by specific type of car, owned and leased: In addition, it owns 6,950 different pieces of maintenance of way work equipment. At the end of 2007, the average age of UP's locomotive fleet was 14.8 years, the freight car fleet 28 years. UP

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2730-549: The locomotive body is painted Armour Yellow , a color used by Armour and Company on the packaging of its meat products. A thin band of Signal Red divides this from the Harbor Mist Gray (a light gray) used for the body and roof above that point. There is also a thin band of Signal Red along the bottom of the locomotive body, but this color has gradually become yellow as new Federal Railroad Administration (FRA) regulations for reflectorized tape came into effect in 2005;

2795-415: The mark, which consists of an alphabetic code of two to four letters, is stenciled on each piece of equipment, along with a one- to six-digit number. This information is used to uniquely identify every such rail car or locomotive, thus allowing it to be tracked by the railroad it is traveling over, which shares the information with other railroads and customers. In multinational registries, a code indicating

2860-489: The namesake of the city of Durant, Iowa , the first rails were laid in Omaha . The two lines were joined at Promontory Summit, Utah , 53 miles (85 km) west of Ogden on May 10, 1869, hence creating the first transcontinental railroad in North America. Leland Stanford, founder of the Central Pacific Railroad which itself eventually was merged with Union Pacific, himself drove the golden spike , inscribed with

2925-600: The once-proud flagship was replaced by a new Challenger with lightweight coaches and sleepers on a fast schedule. In the early years of the Los Angeles Limited's service, the train's primary motive power was an ALCO 4-6-2 Pacific type. In the early 1920s, the train was upgraded with newer steel, heavyweight passenger cars leased from Pullman, which caused troublesome for the Pacific types to keep schedule, especially through Echo Canyon and Cajon Pass. The Union Pacific responded by purchasing 39 4-8-2 Mountain types from ALCO. These locomotives exceeded UP's expectations. They became

2990-444: The owner of a reporting mark is taken over by another company, the old mark becomes the property of the new company. For example, when the Union Pacific Railroad (mark UP) acquired the Chicago and North Western Railway (mark CNW) in 1995, it retained the CNW mark rather than immediately repaint all acquired equipment. Some companies own several marks that are used to identify different classes of cars, such as boxcars or gondolas. If

3055-405: The owner, or more precisely the keeper of the vehicle. Thus each UIC member got a two-digit owner code . With the introduction of national vehicle registers this code became a country code. Some vehicles had to be renumbered as a consequence. The Swiss company BLS Lötschbergbahn had the owner code 63. When their vehicles were registered, they got numbers with the country code 85 for Switzerland and

3120-502: The primary motive power for the train until 1937, when UP began purchasing 4-8-4 Northern types, famously known as the FEF-1 ; to pull the train between Ogden and Omaha. The Mountain types maintained being the primary power between Ogden and Los Angeles until 1946 when the FEF's were all converted to oil in response to the coal strikes that broke out across the nation. Between Omaha and Chicago,

3185-529: The railroad name. As it also acts as a Standard Carrier Alpha Code , the reporting mark cannot conflict with codes in use by other nonrail carriers. Marks ending with the letter "X" are assigned to companies or individuals who own railcars, but are not operating railroads; for example, the TTX Company (formerly Trailer Train Company) is named for its original reporting mark of TTX. In another example,

3250-762: The railways and registered with the Railway Clearing House . In India, wagons owned by the Indian Railways are marked with codes of two to four letters, these codes normally being the initials of the railway divisions concerned along with the Hindi abbreviation; for example, trains of the Western Railway zone are marked "WR" and "प रे"; those of the Central Railway zone are marked "CR" and "मध्य", etc. The codes are agreed between

3315-656: The reporting mark for state-funded Amtrak services in California is CDTX (whereas the usual Amtrak mark is AMTK) because the state transportation agency ( Caltrans ) owns the equipment used in these services. This may also apply to commuter rail, for example Metrolink in Southern California uses the reporting mark SCAX because the equipment is owned by the Southern California Regional Rail Authority —which owns

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3380-579: The second half of 2005 to the summer of 2006, UP unveiled a new set of six EMD SD70ACe locomotives in "Heritage Colors", painted in schemes reminiscent of railroads acquired by the Union Pacific Corporation since the 1980s. The engine numbers match the year that the predecessor railroad became part of the Union Pacific system. The locomotives commemorate the Missouri Pacific with UP 1982 , the Western Pacific with UP 1983 ,

3445-642: The stability of the Union throughout the American Civil War , but construction did not complete until after the conflict's conclusion. Under the original bill that formed the basis of the 1862 Pacific Railroad Act , the Union Pacific Railroad was to be built from the Nevada–Utah border in the west to the Colorado–Kansas border in the east. However, due to intense lobbying by Dr. Thomas Clark Durant ,

3510-614: The terminal in San Antonio that opened in 2009 or the one in Santa Teresa, New Mexico , that opened in 2014. In 2006, Union Pacific had 11 major active hump yards : In the late 2010s, Union Pacific began deactivating hump yards in favor of flat switching. In this, Union Pacific followed the industry-wide trend towards Precision Scheduled Railroading (PSR); railway executive Hunter Harrison explained that under PSR, few yards receive enough variegated traffic to necessitate

3575-453: The train resumed handling coaches, this time forever. In 1948 lightweight streamliner cars with four-wheel trucks began appearing, usually not more than five. In the 1950s ridership on the Los Angeles Limited declined rapidly. Sleeping car passengers could enjoy more modern streamlined sleeping cars on a faster schedule on the City of Los Angeles, which took 39-3/4 hours Chicago to LA while the Los Angeles Limited needed 45 hours. In January 1954

3640-528: The trip via Cheyenne , Ogden , Salt Lake City , Las Vegas and San Bernardino . In early years the schedule was 68–74 hours; in November 1926 the schedule dropped to 63 hours each way to justify a $ 10 extra charge (which ended in June 1929). Until 1948, the cars had a black roof, dark Pullman-green body with yellow lettering, and black trucks. In 1948 the Union Pacific painted all of its heavyweight fleet in

3705-479: The trucks (painted Aluminum from 1955 to 1982), underframe, fuel tanks and everything else beneath that line are also Harbor Mist Gray. Lettering and numbering are in Signal Red, with black outlines. Most locomotives have white-outlined blue "wings" on the nose, on either side of the renowned shield featuring white lettering on a blue background and, below it, red and white vertical stripes. Beginning in early 2002,

3770-464: The two-tone gray paint scheme was visible; since it took some time to repaint all of the heavyweight equipment Union Pacific's large rail network. In the beginning the cars of the train were wood; after 1912 steel heavyweight cars started to replace the wooden cars. Until 1936 the Los Angeles Limited was the top train of the Union Pacific as a rival to other Chicago to Los Angeles trains such as Santa Fe's California Limited , De Luxe , Chief , and

3835-568: The west. To compete, UP merged with Southern Pacific , thereby incorporating D&RGW and Cotton Belt , and forming a duopoly in the West. The merged railroad took the Union Pacific name. As of 1999, the UP had 33,705 miles (54,243 km) of track, about 33,000 employees, nearly 7,000 locomotives and over 155,000 rail cars. In March 2024 Union Pacific layoffs caused concern at the Federal Railroad Administration to

3900-453: The words "to span the continent and wed the oceans." Subsequently, the UP purchased three Mormon -built roads: the Utah Central Railroad extending south from Ogden to Salt Lake City , the Utah Southern Railroad extending south from Salt Lake City into the Utah Valley , and the Utah Northern Railroad extending north from Ogden into Idaho . The original UP was entangled in the Crédit Mobilier scandal , exposed in 1872. As detailed by

3965-424: The world's largest operating steam locomotive, will visit 14 states in middle America in 2024. Twenty-five locomotives of Big Boy's size were fabricated during World War II, but only Big Boy survives. Its "Heartland of America" tour begins in August 2024 in Cheyenne, Wyoming, and visits Arkansas, Colorado, Illinois, Iowa, Kansas, Missouri, Nebraska, Oklahoma and Texas through October. Another locomotive, UP No. 4141,

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4030-438: Was donated to the George H. W. Bush Presidential Library and Museum on November 8, 2019. On March 31, 2010, UP dedicated a specially painted GE ES44AC locomotive commemorating the centennial of the Boy Scouts of America . On September 28, 2010, UP dedicated a specially painted GE ES44AC locomotive, as a tribute to Susan G. Komen for the Cure . On October 19, 2017, Union Pacific unveiled SD70AH 1943, "The Spirit of

4095-480: Was impaired. This often resulted in five-letter reporting marks, an option not otherwise allowed by the AAR. Companies owning trailers used in trailer-on-flatcar service are assigned marks ending with the letter "Z", and the National Motor Freight Traffic Association , which maintains the list of Standard Carrier Alpha Codes, assigns marks ending in "U" to owners of intermodal containers . The standard ISO 6346 covers identifiers for intermodal containers. When

4160-433: Was ranked 134th on the 2019 Fortune 500 list of the largest United States corporations by revenue and had 41,967 employees. The Chief Executive Officer of Union Pacific since August 14, 2023, is Jim Vena , the President is Beth Whited, and the chairman of the board is Mike McCarthy. In 2019, Union Pacific has been rated the worst company to work for by 247wallst.com, citing Past CEO Lance Fritz's 12% approval rating and

4225-657: Was sold in 1964. Despite the fact that the M-10000 and its successors were among the first diesel locomotives, Union Pacific completed dieselization relatively late. In 1944, UP finally received delivery of its last steam locomotive: Union Pacific 844 . As the 20th century waned, Union Pacific recognized—like most railroads—that remaining a regional railroad would only lead to bankruptcy. On December 31, 1925, UP and its subsidiaries operated 9,834 miles (15,826 km) routes and 15,265 miles (24,567 km) tracks; in 1980, these numbers had remained roughly constant (9,266 route-miles and 15,647 track-miles). But in 1982, UP acquired

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