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Photo of the EMC E2 locomotive LA-1 from the Union Pacific train "City of Los Angeles" from a 1944 Union Pacific Railroad ad.

The Union Pacific Railroad

The Union Pacific Railroad (reporting mark UP) (or Union Pacific Railroad Company and simply Union Pacific) is a freight hauling railroad that operates 8,500 locomotives over 32,100 route-miles in 23 states west of Chicago and New Orleans. The Union Pacific Railroad system is the second largest in the United States after BNSF Railway and it is one of the world's largest transportation companies. The Union Pacific Railroad is the principal operating company of the Union Pacific Corporation (NYSE: UNP); both are headquartered in Omaha, Nebraska.

The Union Pacific legacy began in 1862 with the original company, called the Union Pacific Rail Road, which was part of the First Transcontinental Railroad project, later known as the Overland Route. Two more Union Pacific railroads were formed after that, the Union Pacific Railway (the second company) which absorbed the original company in 1880 and the Union Pacific "Railroad" (the third company) which absorbed the Union Pacific Railway in 1897-1898.

The third incarnation of the Union Pacific Railroad which operated from 1897 to 1998 is referred to as Mark I and it makes up the bulk of the Union Pacific history. The third incarnation of the Union Pacific Railroad produced the well known Big Boy steam locomotives such as the Union Pacific 4014 and the Union Pacific 4012. Other well known steam locomotives were also produced by the third Union Pacific Railroad such as the Union Pacific 3985, the Union Pacific 3977, and the Union Pacific 844. The third incarnation of the Union Pacific Railroad also produced the Union Pacific 6936 diesel locomotive.

The current Union Pacific Railroad, the fourth incarnation, began in 1969 as the Southern Pacific Transportation Company (SP, SPTC or SPTCo), the last incarnation of the Southern Pacific railroad; the Southern Pacific Transportation Company became the fourth incarnation of the Union Pacific Railroad in 1998 with the Union Pacific-Southern Pacific merger which included SP's smaller railroads, the Denver and Rio Grande Western Railroad, the St. Louis Southwestern Railway and the SPCSL Corporation. The current incarnation of the Union Pacific Railroad inherits all operations of the third Union Pacific Railroad. The current incarnation of the Union Pacific Railroad is referred to as Mark II. All together, a total of four railroads used the "Union Pacific" name; however, all four railroads are commonly grouped as one railroad.

The parent company, Union Pacific Corporation was established in 1969, the same year the current railroad (Mark II) began. Besides the Southern Pacific, the Denver and Rio Grande Western, the St. Louis Southwestern and the SPCSL Corporation, the parent company, Union Pacific Corporation, acquired other western railroads over the years such as the Missouri Pacific Railroad, the Chicago and North Western Transportation Company, the Western Pacific Railroad and the Missouri–Kansas–Texas Railroad and all became part of the Union Pacific system, growing the Union Pacific system.

Union Pacific's main competitor is the BNSF Railway, the nation's second largest freight railroad, which also primarily services the Continental U.S. west of the Mississippi River. Together, the two railroads have a duopoly on all transcontinental freight rail lines in the U.S.

Original company (Union Pacific Rail Road) and second company (Union Pacific Railway)
The original company, the Union Pacific Rail Road was incorporated on July 1, 1862, under an act of Congress entitled Pacific Railroad Act of 1862. The act was approved by President Abraham Lincoln, and it provided for the construction of railroads from the Missouri River to the Pacific as a war measure for the preservation of the Union. It was constructed westward from Council Bluffs, Iowa to meet the Central Pacific Railroad line, which was constructed eastward from San Francisco Bay. 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. The two lines were joined together at Promontory Summit, Utah, 53 miles (85 km) west of Ogden on May 10, 1869, hence creating the first transcontinental railroad in North America. Under the guidance of its dominant stockholder Dr. Thomas Clark Durant, the namesake of the city of Durant, Iowa, the first rails were laid in Omaha.

Subsequently, the original 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. It built or purchased local lines that gave it access to Denver, Colorado, to Portland, Oregon, and to the Pacific Northwest and acquired the Kansas Pacific (originally called the Union Pacific, Eastern Division, though in essence a separate railroad). It also owned narrow gauge trackage into the heart of the Colorado Rockies and a standard gauge line south from Denver across New Mexico into Texas (both parts of the Union Pacific, Denver and Gulf Railway).

The original UP was entangled in the Crédit Mobilier scandal, exposed in 1872. Its independent construction company the Crédit Mobilier had bribed congressmen. The original UP itself was not guilty but it did get bad publicity. The financial crisis of 1873 led to financial troubles but not bankruptcy.

The original company was taken over by the new Union Pacific Railway on January 24, 1880, with its dominant stockholder being Jay Gould; the Union Pacific Rail Road was merged into the Union Pacific Railway. The Union Pacific Railway declared bankruptcy during the Panic of 1893. A new Union Pacific "Railroad" was later formed and the Union Pacific Railway was merged into the new railroad.

Third (Mark I) and fourth (Mark II) company, both called Union Pacific Railroad
In 1897, a new Union Pacific Railroad was formed and the Union Pacific Railway was merged into the new Union Pacific Railroad. This Union Pacific Railroad is the third incarnation, and the third incarnation makes up the bulk of the Union Pacific history. The third incarnation produced the well known Big Boy steam locomotives. The Union Pacific 4014 and the Union Pacific 4012 are examples of preserved Big Boy locomotives. Other well known steam locomotives were also produced by the third Union Pacific Railroad such as the Union Pacific 3985, the Union Pacific 3977, and the Union Pacific 844, these three are also preserved. The third Union Pacific Railroad also produced the preserved Union Pacific 6936 diesel locomotive. The Missouri Pacific Railroad, the Chicago and North Western Transportation Company, the Western Pacific Railroad, the Missouri–Kansas–Texas Railroad, the Denver and Rio Grande Western Railroad (part of the UP-SP merger), the St. Louis Southwestern Railway (part of the UP-SP merger), and the SPCSL Corporation (part of the UP-SP merger) all became part of the third Union Pacific Railroad.

The third Union Pacific railroad lasted until 1998 when the parent Union Pacific Corporation merged this Union Pacific railroad into the Southern Pacific Transportation Company (SP, SPTC or SPTCo) which was incorporated in 1969, completing the UP-SP merger with the Union Pacific name being the surviving name. The Southern Pacific Transportation Company was renamed Union Pacific Railroad on the same day it absorbed the third Union Pacific railroad; the Southern Pacific Transportation Company becomes the fourth Union Pacific railroad and it is also the last incarnation of the Southern Pacific railroad. The fourth incarnation of the Union Pacific Railroad inherits all operations of the third incarnation of the Union Pacific Railroad. The fourth incarnation of the Union Pacific Railroad is referred to as Mark II while the third incarnation of the Union Pacific Railroad is referred to as Mark I. All together, a total of four railroads used the "Union Pacific" name; however, all four incarnations of the Union Pacific railroad are grouped and regarded as one railroad, though all incarnations are all separate railroads.

Under chairman W. Averell Harriman, the third Union Pacific railroad founded the Sun Valley ski resort in central Idaho; it opened 82 years ago in 1936 and was sold in 1964.

Revenue passenger traffic, in millions of passenger-miles
Year Traffic
1925 1,065
1933 436
1944 5,481
1960 1,233
1970 333
Source: ICC annual reports

In the tables "UP" includes OSL-OWR&N-LA&SL-StJ&GI; 1925–1944 passenger-mile totals do not include Laramie North Park & Western, Saratoga & Encampment Valley, or Pacific & Idaho Northern, and none of the totals includes Spokane International or Mount Hood. From the ICC annual reports, except 1979 is from Moody's.

Revenue freight ton-miles (millions)
UP       LNP&W   S&EV   P&IN
1925   12,869     10        3
1933   8,639       4 0.4    (into UP)
1944   37,126     7 0.7
1960   33,280    (into UP)
1970   47,575
1979   73,708

On December 31, 1925, UP-OSL-OWRN-LA&SL-StJ&GI operated 9,834 route-miles and 15,265 track-miles. At the end of 1980, the third Union Pacific railroad operated 9,266 route-miles and 15,647 miles of track.[8] Moody's shows 220,697 million revenue ton-miles in 1993 on the expanded system (17,835 route-miles at the end of the year).

Because of the large size of UP, hundreds of yards throughout its rail network are needed to effectively handle the daily transport of goods from one place to another. To reduce overall emissions, Union Pacific is acquiring a new generation of environmentally friendly locomotives for use in Los Angeles basin rail yards.

Union Pacific built a $90 million intermodal terminal in San Antonio, Texas in 2009.

Active hump yards
Hump yards work by using a small hill over which cars are pushed, before being released down a slope and switched automatically into cuts of cars, ready to be made into outbound trains. Union Pacific's active hump yards include:

Bailey Yard in North Platte, Nebraska
Beaumont Yard in Beaumont, Texas
Davidson Yard in Fort Worth, Texas
Davis Yard in Roseville, California
Englewood Yard in Houston, Texas
Gateway Yard in East St Louis, Illinois, owned by subsidiary Alton and Southern Railway
Hinkle Yard in Hermiston, Oregon
Livonia Yard in Livonia, Louisiana
Neff Yard in Kansas City, Missouri
North Little Rock Yard in North Little Rock, Arkansas
Pine Bluff Yard in Pine Bluff, Arkansas
Proviso Yard in Northlake, Illinois, owned by Chicago and North Western Transportation Company until 1995
Strang Yard in La Porte, Texas
West Colton Yard in San Bernardino, California

Union Pacific Railroad Museum
The Union Pacific Railroad Museum in Council Bluffs, Iowa houses the Union Pacific legacy's oldest corporate collections in the United States. The museum includes artifacts, photographs, and documents that trace the development of the first Union Pacific railroad and the American West. The museum's collection features weapons from the late 19th and 20th centuries, outlaw paraphernalia, a sampling of the immigrants' possessions, and a photograph collection comprising more than 500,000 images. In 2009, the America's Power Factuality Tour stopped at the Union Pacific Railroad Museum to report on the UP legacy's role in generating electricity in the United States.

Locomotive and rolling stock
Paint and colors
UP's basic paint scheme for its diesel-electric locomotives is the oldest still in use by a major railroad. The middle two-thirds of the locomotive body is painted Armour Yellow, so named because it was the color used by the Armour meat company. A thin band of Signal Red divides this from the Harbor Mist Gray (a fairly light gray) used for the body and roof above that point. Signal Red is also painted at 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; the trucks, underframe, fuel tanks and everything else beneath that line are also Harbor Mist Gray. The trucks at one point were painted in an aluminum color, though due to high costs and high maintenance, this was also changed to harbor mist gray, right after the merger with WP and MP. Lettering and numbering are in Signal Red, with black outlines. Some locomotives (historically passenger locomotives, as well as most units from 2000 on) have white-outlined blue "wings" on the nose, as well as a zig zag design with the signal red line on the top half of the locomotive sides—this is affectionately known as the “lightning stripe”, based on a design from later CNW locomotives. Beginning in early 2002, 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. This paint scheme is known as "Building America," "Wings," or "Flags and Flares."

The Armour Yellow livery was first introduced on the UP's M-10000 streamliner train in 1934, although Leaf Brown was used instead of Harbor Mist Grey. Passenger cars, cabooses, and other non-freight equipment have also been painted in a similar fashion.

The steam locomotive paint schemes are unique in their own way. Up until the mid-1940s, all steam locomotives on UP were painted in a standard scheme: the smokebox and firebox were painted graphite and the rest was painted jet black; the lettering was usually aluminum. In the late 1940s, many passenger steam locomotives were repainted in a two-tone grey scheme to match the scheme applied to some passenger rolling stock. These locomotives were painted light grey, with one dark gray strip running from front to rear alongside the running board and in the middle of the tender. This dark grey strip was outlined in yellow (originally aluminum), and all lettering inside the strip was yellow also. After 1952, these locomotives were repainted in the same basic black color scheme as the earlier freight locomotives. The grey passenger cars were repainted in the yellow scheme.

From 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, the Missouri-Kansas-Texas with UP 1988, the Chicago and North Western with UP 1995, the Southern Pacific with UP 1996 (the current Union Pacific Railroad was the last incarnation of the Southern Pacific railroad), and the Denver and Rio Grande Western with UP 1989.

In October 2005, UP unveiled another specially painted SD70ACe: 4141 has "George Bush 41" on the sides and its paint scheme resembles that of Air Force One.

On March 31, 2010, UP dedicated a specially painted GE ES44AC locomotive commemorating the centennial of the Boy Scouts of America. Although it retains the standard Armour Yellow and Harbor Mist colors, the unit has a large BSA 2010 logo on each side of the long hood, and the scouting logo low on the side of the cab.

On September 28, 2010, UP dedicated a specially painted GE ES44AC locomotive, as a tribute to Susan G. Komen for the Cure. The unit is standard UP Armour Yellow and Harbor Mist colors, but has a large pink ribbon, the symbol for breast cancer awareness, on each side of the long hood.

2013 locomotive roster
As of October 2013, the Union Pacific had 8,185 locomotives on its active roster. The locomotive fleet consists of 43 different models and had an average age of 17.8 years.

Type - Quantity
4-8-8-4 1
4-6-6-4 1
4-8-4 1
B40-8 91
C40-8 333
C40-8W 50
C41-8W 154
C4460AC 80
C44-9W 274
C44AC/CTE 1,485
C45AC/CTE 943
C6044AC 176
C60AC 75
DDA40X 1
E9A 2
E9B 1
GP15-1 160
GP38-2 664
GP38AC 2
GP39-2 49
GP40 15
GP40-2 142
GP40-2P 2
GP40M-2 65
GP50 48
GP60 194
MP15AC 41
MP15DC 102
SD40-2 505
SD60 85
SD60M 560
SD70ACe 321
SD70M 1,445
SD9043AC 309
SW1500 18

Surviving merger partner locomotives
As of May 23, 2015, UP operates nine Southern Pacific (107,177,187, 266, 309, 319, 335, 343, and 352), two St. Louis Southwestern (9642, and 9708), and two Chicago and North Western (8646 and 8701) locomotives that are still in the former railroads' paint. In addition, many locomotives have been "patched" and 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 allows UP to number locomotives into its roster, yet it takes less time and money than it does to perform a complete repaint into UP colors. As of May 17, 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 rosters a single SD40-2 (3564) still in the 1970s paint scheme. Also, several patched units have uniquenesses, such as UP 6289 (The 'flaming' patch), and UP 6361 (SP paint, with full UP letters on conductor's side). UP also rosters an ex-CNW AC4400CW in UP paint, in which decals have been aqpplied with 'We Will Deliver' and Operation Lifesaver (6736). UP retains many CNW units with OLS decals.

Historic locomotives
Alone among modern railroads, UP maintains a small fleet of historic locomotives for special trains and hire in its Cheyenne, Wyoming roundhouse.

UP 4014 is a 4-8-8-4 Articulated type, Big Boy, freight steam locomotive. On July 23, 2013, it was announced that the UP was acquiring UP 4014 from The Southern California Chapter of The Railway and Locomotive Historical Society in Pomona, with the goal of restoring it to service. 4014 was moved from Pomona to the Union Pacific West Colton yard on January 26, 2014 and then to Cheyenne, Wyoming. Restoration to full operating condition is currently in progress, expected to be finished between 2017 and 2019. Volunteers and paid contractors are assisting the UP steam crew in the rebuild predominantly at the UP Steam Shop in Cheyenne.
UP 844 is a 4-8-4 Northern type express passenger steam locomotive (class FEF-3). It was the last steam locomotive built for UP and has been in continuous service since its 1944 delivery. Many people know the engine as the No. 8444, since an extra '4' was added to its number in 1962 to distinguish it from a diesel numbered in the 800 series. It regained its rightful number in June 1989, after the diesel was retired and donated to the Nevada Southern Railroad Museum in Boulder City, Nevada. A mechanical failure occurred on June 24, 1999, in which the boiler tubes from the 1996 overhaul, being made of the wrong material, collapsed inside the boiler and put the steam locomotive out of commission. The UP steam crew successfully repaired it and returned it to service on November 10, 2004. It was rebuilt and returned to service in 2016. It is the only steam locomotive to never be officially retired from a North American Class I railroad.
UP 3985 is a 4-6-6-4 Challenger class dual-service steam locomotive. It is the largest steam locomotive still in operation anywhere in the world. Withdrawn from service in 1962, it was stored in the UP roundhouse until 1975, when it was moved to the employees' parking lot outside the Cheyenne, Wyoming, depot until 1981 when a team of employee volunteers restored it to service. In 2007, it underwent repairs for service, and was back up and running in 2008 to continue its run. UP 3985 has been in storage since 2010, but may return to service once 4014's restoration is completed.
UP 951, 949 and 963B are a trio of streamlined General Motors Electro-Motive Division E9 passenger locomotives built in 1955. They are used to haul the UP business cars and for charter specials. While externally they are 1955 vintage locomotives, the original twin 1,200 hp 12-cylinder 567 series engines have been replaced with single EMD 16-645E 2,000 hp (1.5 MW) engines (which were salvaged from wrecked GP38-2 locomotives) and the electrical and control equipment similarly upgraded, making them more modern locomotives under the skin. The set is made of two A units and one B unit. The B unit contains an HEP engine-generator set for powering passenger cars. The two A units were recently modified to eliminate the nose doors to increase safety in the event of collision.
UP 6936 is an EMD DDA40X "Centennial" diesel-electric locomotive. These were the largest diesel locomotives ever built and were manufactured specifically for UP. Of the many DDA40X locomotives built, 6936 is the only one in service. The locomotive suffered major damages in 2000 as a result of a collision with a dump truck at a grade crossing in Livonia, Louisiana. After it was repaired a winged UP shield logo was applied to the front. It was also repainted in the current Lightning Bolt paint scheme and had a rooftop air conditioning unit installed.
UP 5511 is a 2-10-2 steam locomotive. This locomotive is very rarely ever heard of, because it was never donated for public display. This locomotive is reportedly in excellent condition. The only thing keeping it from being restored is that it would be limited to 40 mph (64 km/h) or lower due to its large cylinders and small drivers. As of August 2004, this locomotive is being offered for sale by UP.[citation needed] It is currently in storage at the roundhouse where 844 & 3985 were repaired in Cheyenne, Wyoming
UP 1243 is a 4-6-0 steam locomotive, and is the oldest locomotive owned by UP. Built in 1890 and retired in 1957, it was at first stored in Rawlins, Wyoming. It was cosmetically restored in 1990 for public display, and toured with 844 as part of the Idaho and Wyoming Centennial train, being moved on a flat car. It was moved to Omaha, Nebraska in November 1996 and put on display at the Western Heritage Museum.

In addition there are a number of other locomotives kept in storage for possible future restoration. Rio Grande (DRGW) F9B 5763 is one of the units in storage, part of the Trio (A-B-B) of F9s that served on the Rio Grande in various Passenger Duty services (From the Denver Ski Train to the Zephyr Trains) until their retirement in 1996. Sister Units 5771 (F9A) and 5762 (F9B) were donated to the Colorado Railroad Museum. Chicago and North Western F7 No. 401, used for Chicago and North Western business trains, also was retained by UP.

UP 838, a twin to 844, is stored in the Cheyenne roundhouse as a parts source, though as most of its usable parts have already been applied to 844, it is more likely to see use as a source of pattern parts for reproduction replacements. Reputedly, 838's boiler is in better condition than that of 844, due to 838 having not been in steam since retirement, compared to 844's relatively heavy use since 1960.

Among the former tenants was Southern Pacific 1518 (the first production SD7 ex EMD demo 990), transferred to the Illinois Railway Museum after some time in storage in the UP shops.

Preserved locomotives
In addition to the historic fleet outlined above kept by UP itself, a large number of UP locomotives survive elsewhere. Many locomotives were donated to towns along the Union Pacific tracks, for instance, as well as locomotives donated to museums.

UP 18, 26. From 1948 to 1970, UP operated a series of Gas turbine-electric locomotives. No other railroad in the world operated turbines on such a scale. At one point, UP claimed that the turbines hauled 10% of its freight. These were ultimately retired due to rising fuel costs. Two surviving GTELs can be seen on display; UP 18 is at the Illinois Railway Museum in Union, Illinois, and UP 26 is displayed at the Utah State Railroad Museum in Ogden, Utah.
UP 407 – A 2-8-0 type, donated to City of Sidney, Nebraska in July 1956
UP 421 – A 2-8-0 type, donated to City of Fairbury, Nebraska in April 1956
UP 423 – A 2-8-0 type, donated to City of Gering, Nebraska in July 1955
UP 428 – A 2-8-0 type, undergoing restoration at the Illinois Railway Museum, Union, Illinois
UP 437 – A 2-8-0 type, donated to City of Grand Island, Nebraska in September 1955
UP 440 – A 2-8-0 type, donated to City of Lincoln, Nebraska in May 1955, moved to Mid-Continent Railway Museum, North Freedom, Wisconsin in June 1975
UP 460 – A 2-8-0 type, donated to City of Marysville, Kansas in April 1956
UP 477 – A 2-8-0 type, donated to City of Salina, Kansas in July 1955
UP 480 – A 2-8-0 type, donated to City of North Platte, Nebraska in February 1956
UP 481 – A 2-8-0 type, on display at Buffalo County Historical Society, Kearney, Nebraska
UP 485 – A 2-8-0 type, donated to City of Lexington, Nebraska in June 1956
UP 529 – A 2-8-0 type, on display at Northwest Railway Museum, Snoqualmie, Washington
UP 533 – A 2-8-0 type, donated to City of Rawlins, Wyoming in December 1958
UP 561 – A 2-8-0 type, on display at Pawnee Park, Columbus, Nebraska
UP 616 – A 2-8-0 type, donated to City of Nampa, Idaho in August 1958
UP 618 – A 2-8-0 type, at the Heber Valley Historic Railroad
UP 737 – A 4-4-0 type, was in the collection of Steamtown National Historic Site, then moved to Feather River Railroad Museum, Portola, California. Currently displayed at the Double-T Agricultural Museum in Stevinson, California.
UP 119 – A 4-4-0 type, the original was scrapped, and thus technically does not count as a preserved engine. However, a full-scale, exact replica was built in 1979, and currently operates at the Golden Spike National Historic Site in Promontory, Utah.
UP 814 – A 4-8-4 type, on display at Dodge Park, Council Bluffs, Iowa
UP 833 – A 4-8-4 type, on display at Eccles Rail Center, Utah State Railroad Museum Union Station, Ogden, Utah
UP 942 - An EMD E8 type, on display and operation use at the Orange Empire Railroad Museum
UP 1242 – A 4-6-0 type, on display at Lions Park, Cheyenne, Wyoming
UP 2005 – A 2-8-2 type, on display at Ross Park, Pocatello, Idaho
UP 2295 – A 2-8-2 type, on display at former UP passenger depot, Boise, Idaho
UP 2537 – A 2-8-2 type, donated to City of Walla Walla, Washington in December 1959
UP 2564 – A 2-8-2 type, originally on display in Oro Grande, California, May 1959, then moved to Orange Empire Railway Museum, Perris, California
UP 3203 – A 4-6-2 type, donated to City of Portland, Oregon in January 1958. Originally Oregon Railway and Navigation Company No. 197, it was moved to the Brooklyn Roundhouse in 1996 and to the Oregon Rail Heritage Center in 2012, where it is now undergoing restoration.
UP 3206 – A 4-6-2 type, originally on display at Highbridge Park in Spokane, Washington. Moved to Spokane Interstate Fairgrounds in 1978.
UP 3977 is the only 4-6-6-4 Challenger class dual-service steam locomotive on static display. It is located in Cody Park in North Platte, Nebraska.
UP 4004 – A Union Pacific Big Boy 4-8-8-4 articulated steam locomotive, on display in Holiday Park, Cheyenne, Wyoming
UP 4005 – A Union Pacific Big Boy 4-8-8-4 articulated steam locomotive, on display at Forney Museum of Transportation, Denver, Colorado
UP 4006 – A Union Pacific Big Boy 4-8-8-4 articulated steam locomotive, on display at National Museum of Transport, St. Louis, Missouri
UP 4012 – A Union Pacific Big Boy 4-8-8-4 articulated steam locomotive, originally on display at Bellows Falls, Vermont, moved to Steamtown, Scranton, Pennsylvania in 1984
UP 4017 – A Union Pacific Big Boy 4-8-8-4 articulated steam locomotive, on display at National Railroad Museum, Green Bay, Wisconsin
UP 4018 – A Union Pacific Big Boy 4-8-8-4 articulated steam locomotive, originally on display at Texas State Fair Grounds, Dallas, Texas. Number 4018, currently residing at the Museum of the American Railroad in Frisco, TX, almost saw a return to operation in 1998 when a film director proposed restoring the locomotive for use in a movie. However, it has been 9 years since anything has been heard of this proposal, and it is considered to have been only a whim.
UP 4023 – A Union Pacific Big Boy 4-8-8-4 articulated steam locomotive, on display at Lauritzen Gardens/Kenefick Park, Omaha, Nebraska
UP 4420 – An 0-6-0 type, donated to City of Evanston, Wyoming, in June 1958
UP 4436 – An 0-6-0 type, on display at Eccles Rail Cener, Utah State Railroad Museum Union Station, Ogden, Utah
UP 4439 – An 0-6-0 type, on display at Griffith Park, Los Angeles
UP 4442 – An 0-6-0 type, donated to City of Las Vegas, Nevada, in April 1960, since moved to Henderson, Nevada
UP 4455 – An 0-6-0 type, operated by the Laramie Portland Cement plant hauling limestone from the quarry southwest of Laramie, Wyoming until 1965, then to Colorado Railroad Museum for display
UP 4466 – An 0-6-0 type built by Lima Locomotive Works in 1920, displayed at the California State Railroad Museum. It operated at the museum until 1999.
UP 6051 – A 2-8-0 type, on display at Fairmount park, Riverside, California
UP 6072 – A 2-8-0 type, on display at Ft. Riley Museum, Ft. Riley, Kansas
UP 6237 – A 2-8-0 type, donated to City of Hastings, Nebraska in July 1956
UP 6264 – A 2-8-0 type, on display at Nevada Southern Railroad Museum, Boulder City, Nevada
UP 6535 – A 2-8-0 type, on display at Depot Park, Laramie, Wyoming
UP 6900 Centennial series – Several of the huge DDA40X diesel-electric locomotives have been saved. Other than 6936 that UP maintains in its heritage fleet, none of the remaining Centennials operate. However, 6930 at the Illinois Railway Museum has operating cab controls, allowing it to couple to another locomotive and control it.
UP 9000, a Union Pacific 9000 class 4-12-2 giant non-articulated freight locomotive, at the Fairplex in Pomona, California

Miniature Train
Union Pacific owns a miniature train, sometimes called the "Pride of The Omaha Shops." It was constructed in 1956 in the Omaha shops. For many years, the train has been used in various events, including parades, employee Family Days and other civic events. Today, it makes about 50 appearances a year throughout Union Pacific's 23-state system and generally is booked up to three years in advance of special civic celebrations.

The mini train is composed of the following:
Locomotive, numbered as UP 956 (modeled after the E9)
Box car, numbered as UP 498150, "Automated Rail Way" slogan
Gondola, numbered as UP 98000
Tank car, numbered as UP 69969
Refrigerator car, numbered as UPFE 451501
Aluminum coal hopper
Caboose, numbered as UP 25300

Passenger train service
Union Pacific operated through passenger service over its historic "Overland Route" between 1869 until May 1, 1971. The last passenger train operated by UP was the westbound City of Los Angeles. After May 1, 1971, Amtrak assumed operation of long-distance passenger operations in the United States. UP at various times operated the following named passenger trains:

Butte Special (operated between Salt Lake City and Butte, Montana)
Challenger (operated jointly with the Chicago and North Western Railway until October 1955, and thereafter the Milwaukee Road)
City of Denver (operated jointly with the Chicago and North Western Railway until October 1955, and thereafter the Milwaukee Road)
City of Las Vegas; later, the Las Vegas Holiday Special (1956–1967)
City of Los Angeles (operated jointly with the Chicago and North Western Railway until October 1955, and thereafter the Milwaukee Road)
City of Portland (operated jointly with the Chicago and North Western Railway until October 1955, and thereafter the Milwaukee Road)
City of Salina (1934–1940)
City of San Francisco (operated jointly with the Chicago and North Western Railway and the Southern Pacific Railroad; after October, 1955 the Milwaukee Road assumed operation of the Chicago-Omaha leg of the service)
City of St. Louis
Columbine (in service to Chicago and Denver, beginning in the 1920s)
Forty-Niner (operated between Chicago and Oakland)
Gold Coast (operated between Chicago and Oakland/Los Angeles)
Idahoan (operated between Cheyenne and Portland)
Los Angeles Limited (in service 1905)
Overland Flyer; renamed the Overland Limited in 1890 (1887–1963)
Pacific Limited (operated between Chicago and Ogden, Utah where it was split to serve Los Angeles and San Francisco, beginning in 1913. It was combined with the Portland Rose in 1947.)
Pony Express (operated between Kansas City and Los Angeles 1926—1954)
Portland Rose (in service between Chicago and Portland, beginning in the 1920s)
San Francisco Overland (originally operated between Chicago and Oakland, later terminated only at St. Louis)
Spokane (operated between Spokane and Portland)
Utahn (operated between Cheyenne and Los Angeles)
Yellowstone Special (operated between Pocatello, Idaho and West Yellowstone, Montana)

UP mainly operates commuter trains for Metra on the Union Pacific Lines: Union Pacific/North Line, Union Pacific/Northwest Line, and Union Pacific/West Line.

Many Amtrak routes currently utilize Union Pacific rails:

Amtrak Cascades
California Zephyr
Capitol Corridor
Coast Starlight
Hoosier State
Lincoln Service
Missouri River Runner
Pacific Surfliner
San Joaquin
Sunset Limited
Texas Eagle

Facts and figures
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:

35,437 covered hoppers
12,272 boxcars
18,647 open-top hoppers
13,780 gondolas
14,148 "other" types of cars

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.

Company officers

Presidents of all four incarnations of the Union Pacific Railroad:
William Butler Ogden (1862–1863)
John Adams Dix (1863–1865)
Oliver Ames, Jr. (1866–1871)
Thomas Alexander Scott (1871–1872)
Horace F. Clark (1872–1873)
John Duff (1873–1874)
Sidney Dillon (1874–1884)
Charles F. Adams (1884–1890)
Sidney Dillon (1890–1892)
S.H.H. Clark (1890–1898)
W.S. Pierce (acting) (1897)
Horace G. Burt (1898–1904)
E. H. Harriman (1904–1909)
Robert S. Lovett (1910–1911)
A.L. Mohler (1911–1916)
E.E. Calvin (1916–1918)
C.B. Seger (1918–1919)
Carl R. Gray (1920–1937)
William M. Jeffers (1937–1946)
G.F. Ashby (1946–1949)
Arthur E. Stoddard (1949–1965)
E.H. Bailey (1965–1971)
John Kenefick (1971–1986)
Drew Lewis (1986–1987)
Mike Walsh (1987–1991)
Richard K. Davidson (1991–1996)
Ron Burns (several months in 1996)
Jerry Davis (1996–1998)
Ike Evans (1998–2004)
James R. Young (2004–2012)
Jack Koraleski (2012–2015)
Lance M. Fritz (2015–present)

Environmental record
In Eugene, Oregon, the UP and the Oregon Department of Environmental Quality are jointly studying ground contamination at the railroad's yard originating with the Southern Pacific from over one hundred years ago, consisting mostly of petroleum hydrocarbons, industrial solvents, and metals. This has affected a nearby groundwater source.

Union Pacific Railroad in 2007 started an experimental method of reducing emissions from the engine exhaust of their locomotives. By adding an experimental oxidation catalyst filtering canister to the diesel engine's exhaust manifold, they are attempting to reduce the amount of unburned hydrocarbons, carbon monoxide and particulate matter generated, much like a catalytic converter in automobiles and trucks. The United States Environmental Protection Agency's National Vehicle Fuels and Emissions Laboratory provided most of the funding for the test. Using Ultra Low Sulfur diesel with the oxicat resulted in reduced particulate emissions by approximately 50 percent, unburned hydrocarbons by 38 percent and carbon monoxide by 82 percent.

The company's Fuel Master program uses the expertise of locomotive engineers to save fuel. Engineers who save the most fuel are rewarded on a monthly basis. The program has saved the company millions of dollars, a significant amount of which has been returned to the engineers. In 2006, the program founder, Wayne Kennedy, received the John H. Chafee Environmental Award, and the program was recognized by Secretary of Transportation Norman Mineta.

EMP, a domestic interline Intermodal freight transport partnership that provides shipping and logistics of containers, is owned by Union Pacific, along with Norfolk Southern Railroad and agent-owned partners Canadian National Railway, Canadian Pacific Railway, I&M Rail Link, Iowa Interstate Railroad, Wisconsin Central Ltd., and Kansas City Southern Railway. EMP's fleet of more than 35,000 domestic 53-foot containers and chassis traverse major cities throughout North America.

See also:

History of the Union Pacific

Railroads of the U.S.A.

Class I Railroads

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