Private company

Pennsylvania Railroad

Logo: Pennsylvania Railroad, Public domain, via Wikimedia Commons3

American Class I railroad (1846–1968)

The Pennsylvania Railroad (reporting mark PRR), officially the Pennsylvania Railroad Company, also known as the "Pennsy," was an American Class I railroad established in 1846 and headquartered in Philadelphia. In 1882, it was the largest railroad (by traffic and revenue), transportation enterprise, and corporation in the world. Over its existence, the Pennsylvania Railroad acquired, merged with, or owned part of at least 800 other rail lines and companies.2 It employed about 151,200 people in 1946.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Apr 13, 1846Founded1
Mass Transportation (Army-Navy Game) by Grif Teller, 1955
Photo: Griffith Teller, Public domain, via Wikimedia Commons5

The Pennsylvania Railroad (reporting mark PRR), officially the Pennsylvania Railroad Company, also known as the "Pennsy," was an American Class I railroad established in 1846 and headquartered in Philadelphia. In 1882, it was the largest railroad (by traffic and revenue), transportation enterprise, and corporation in the world.2

Corporate structure

Pennsylvania Railroad sits at the top of its group. 4 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Beginnings

With the opening of the Erie Canal in 1825 and the beginnings of the Chesapeake and Ohio Canal in 1828, Philadelphia business interests became concerned that the port of Philadelphia would lose traffic. The state legislature was pressed to build a canal across Pennsylvania, and thus the Main Line of Public Works was commissioned in 1826. It soon became evident that a single canal would not be practical, and a series of railroads, inclined planes, and canals were proposed. The route consisted of the Philadelphia and Columbia Railroad, canals up the Susquehanna and Juniata rivers, an inclined plane railroad called the Allegheny Portage Railroad, a tunnel across the Allegheny Mountains, and canals down the Conemaugh and Allegheny rivers to Pittsburgh, Pennsylvania, on the Ohio River; it was completed in 1834. Because freight and passengers had to change conveyances several times along the route and canals froze in winter, it soon became apparent that the system was cumbersome, and a better way was needed.

There were two applications made to the Pennsylvania legislature in 1846. The first was for a new railroad called "The Pennsylvania Railroad Company" to build a line between Harrisburg and Pittsburgh, Pennsylvania. The second was the Baltimore and Ohio Railroad (B&O), which wanted to build to Pittsburgh from Cumberland, Maryland. Both applications were granted with conditions. If the Pennsylvania Railroad did not raise enough capital and contract to build enough railroad within a year, then the B&O bill would become effective and the Pennsy's void, thereby allowing the B&O to build into Pennsylvania and on to Pittsburgh. The Pennsylvania Railroad fulfilled the requirements and Letters Patent were issued by the Pennsylvania governor on February 25, 1847. The governor declared the B&O's rights void the following August.

Early years

In 1847, the Pennsy's directors chose J. Edgar Thomson, an engineer from the Georgia Railroad, to survey and construct the line. He chose a route that followed the west bank of the Susquehanna River northward to the confluence with the Juniata River, following its banks until the foothills of the Allegheny Mountains were reached at a point that would become Altoona, Pennsylvania. To traverse the mountains, the line would climb a moderate grade for 10 miles (16 km) until it reached a split of two mountain ravines which were crossed by building a fill and having the tracks ascend a 220-degree curve known as Horseshoe Curve that limited the grade to less than 2 percent. The crest of the mountain would be penetrated by the 3,612 ft (1,101 m) Gallitzin Tunnels, from which the route descended by a more moderate grade to Johnstown.

The western end of the line was simultaneously built from Pittsburgh, eastward along the Allegheny and Conemaugh rivers to Johnstown, while the eastern end was built from Harrisburg to Altoona. In 1848, the Pennsy contracted with the Harrisburg, Portsmouth, Mountjoy and Lancaster Railroad (HPMtJ&L) to buy and use equipment over both roads, providing service from Harrisburg east to Lancaster. In 1851, tracks were completed between Pittsburgh and Johnstown. In 1852, a continuous railroad line ran between Philadelphia and Pittsburgh over the tracks of several entities including the Pennsylvania Railroad. In 1853, the Pennsy was granted trackage rights over the Philadelphia and Columbia, providing a connection between the two cities and connecting with the HPMtJ&L at Lancaster and Columbia. By 1854, the Pennsy completed its line from Harrisburg to Pittsburgh, eliminating the use of the inclined planes of the Allegheny Portage Railroad.

In 1857, the PRR purchased the Main Line of Public Works from the state of Pennsylvania. This purchase included 275 miles (443 km) of canal, the Philadelphia & Columbia Railroad, and the New Portage Railroad (which replaced the now abandoned Allegheny Portage Railroad). The Pennsy abandoned most of the New Portage Railroad in 1857 as it was now redundant with the Pennsylvania Railroad's own line. In 1861, the Pennsy leased the HPMtJ&L to bring the entire stretch of road between Pittsburgh and Philadelphia under its control.

The Johnstown to Pittsburgh stretch of canal was abandoned in 1865 and the rest of the canals sold to the Pennsylvania Canal Company in 1866.

The main line was double track from its inception, and by the end of the century, a third and fourth track were added. Over the next 50 years, the Pennsy expanded by gaining control of other railroads by stock purchases and 999-year leases. At the end of its first year of operation, the Pennsylvania Railroad paid a dividend and continued the dividend without interruption until 1946.

Expansion

The Pennsy's charter was supplemented on March 23, 1853, to allow it to purchase stock and guarantee bonds of railroads in other states, up to a percentage of its capital stock. Several lines were then aided by the Pennsy in hopes to secure additional traffic. By the end of 1854, the Pennsy purchased stock in the Ohio & Pennsylvania, Ohio & Indiana, Marietta & Cincinnati, Maysville & Big Sandy, and Springfield, Mt. Vernon & Pittsburgh railroads, totalling $1,450,000 (equivalent to $52 million in 2025). The Steubenville & Indiana was assisted by the Pennsy in the form of a guarantee of $500,000 worth of bonds. In 1856, a controlling interest was purchased in the Cumberland Valley Railroad and the Pennsy constructed additional lines in Philadelphia. In 1857, the aforementioned Main Line of Public Works was purchased for $7,500,000 ($259 million in 2025).

Read the full text

Empire Transportation Company

The Empire Transportation Company was founded in 1865 by Joseph D. Potts and became a multi-modal freight transportation subsidiary of the Pennsylvania Railroad. It owned oil tanker cars and used them to transport refined oil for mostly independent oil refiners during the era of John D. Rockefeller's and Standard Oil's oil refinery mergers of the 1870s. The company also owned grain freight boats on the Great Lakes and oil pipelines in the oil regions of Pennsylvania. When the company attempted to buy and build some oil refineries in 1877, Standard Oil bought the company.

1860–1960

1846: The Pennsylvania Railroad Company is chartered to construct a rail line from Harrisburg to Pittsburgh, Pennsylvania.

1850s: Renamed the Pennsylvania Central Railway.

1850: Construction begins on Altoona Works repair shop at Altoona, Pennsylvania.

1857: The Main Line of Public Works of Pennsylvania purchased.

1865: First US railroad to use steel rails.

1868: The Pittsburgh, Cincinnati and St. Louis Railway is formed and controlled by the Pennsy.

1869: Leases the Pittsburgh, Fort Wayne and Chicago Railway, formally giving it control of a direct route into the heart of the Midwestern United States and Chicago, Illinois.

1870: "Pennsylvania Central" is split into lines east (renamed Pennsylvania Railroad) and lines west Pennsylvania Company is formed to hold securities from companies West of Pittsburgh; Use of track pans begins on PRR at Sang Hollow, Pennsylvania; Pennsy reaches Cincinnati, Ohio, with lease of Little Miami and St. Louis, Missouri, with control of the St. Louis, Vandalia & Terre Haute.

1871: Pennsylvania Railroad reaches Jersey City, New Jersey, and the New York City area via lease of the United New Jersey Railroad and Canal Company.

1872: Airbrakes were first used on the Pennsylvania Railroad.

1873: Pennsy reaches Washington, D.C., via the Baltimore & Potomac Railroad.

1877: Thomas A. Watson demonstrates telephone to PRR officials at Altoona; Pittsburgh Riots destroys property of Pennsylvania Railroad at Pittsburgh, Pennsylvania.

1881: Pennsy purchases control of Philadelphia, Wilmington, and Baltimore Railroad thereby providing a direct route between Philadelphia, Baltimore, and Washington, D.C., access to Delmarva Peninsula; Broad Street Station opens.

1885: The Congressional Limited Express from New York to Washington is introduced

1887: Pennsylvania Limited service begins between New York and Chicago; first vestibuled train.

1900: The Pennsy gains access to Buffalo, New York, via lease of Western New York & Pennsylvania

1902: Pennsylvania Special service begins between New York and Chicago replacing the Pennsylvania Limited

1906: An accident in Atlantic City kills 53 people

1907: Washington Union Station in Washington, D.C., completed

1910: Completion of the North River Tunnels under the Hudson River, providing direct service from New Jersey to Manhattan on electrified lines, terminating at the massive new Penn Station

1912: The second vice-president of the PRR, John B. Thayer, died in the sinking of the RMS Titanic aged 49

1912: Broadway Limited was inaugurated, replacing the Pennsylvania Special

1915: The Pennsylvania electrifies its suburban Philadelphia lines to Paoli, Pennsylvania; PRR Position-Light signals first used, between Overbrook and Bryn Mawr, Pennsylvania.

1916: The Pennsy adopts new motto, "Standard Railroad of the World"; The first I1s Decapod locomotive is completed, and switching locomotives of the A5s and B6sb class are introduced

1917: Completion of the New York Connecting Railroad and the Hell Gate Bridge speed access to New England

1918: Pennsy stock bottoms at $40¼ (equal to $861.55 today), the lowest since 1877, due largely to Federal railroad control; Emergency freight is routed through New York Penn Station and the Hudson River tunnels by the USRA to relieve congestion; The Pennsy electrifies suburban commuter line to Chestnut Hill, Pennsylvania

1925: Chicago Union Station opens

1928–1938: The Pennsylvania electrifies its New York City to Washington, D.C., and Chicago to Philadelphia lines between Harrisburg and Paoli, several Philadelphia and New York City area commuter lines, and major through freight lines

1937: Pennsy acquires its first diesel, a model SW switcher engine from Electro-Motive Corporation

1943: An accident at Frankford Junction, Pennsylvania, kills 79

1946: Pennsylvania Railroad reports a net loss for the first time in its history

1951: An accident in Woodbridge, New Jersey, kills 85 people

1957: Steam locomotives are removed from active service in the PRR fleet; merger talks begin with the New York Central Railroad

1968: PRR expands to New York City, and eventually changes its name to Penn Central Transportation Company (PC)

Demise

The controlling, non-institutional shareholders of the PRR during the early 1960s were Henry Stryker Taylor, who was a part of the Jacob Bunn business dynasty of Illinois, and Howard Butcher III, a principal in the Philadelphia brokerage house of Butcher & Sherrerd (later Butcher & Singer).

On February 1, 1968, the Pennsylvania Railroad merged with its longtime arch-rival, the New York Central Railroad. The Pennsylvania Railroad absorbed the New York Central and eventually went by the name of Penn Central Transportation Company.

The Interstate Commerce Commission (ICC) required that the ailing New York, New Haven & Hartford Railroad (NH) be added in 1969. A series of events including inflation, poor management, abnormally harsh weather, and the withdrawal of a government-guaranteed $200 million operating loan forced Penn Central to file for bankruptcy protection on June 21, 1970. In May 1971, passenger operations, including equipment, were transferred to a new government-subsidized company called the National Railroad Passenger Corporation, or Amtrak. This was devised to relieve the Penn Central (and other railroads) of money-losing passenger service. Penn Central rail lines, including ex-Pennsy lines, were transferred to Conrail in 1976, and eventually Amtrak received the Northeast Corridor and Keystone Corridor lines.

After Conrail was divided between the Norfolk Southern Railway and CSX Transportation, most of the former Pennsy's remaining trackage went to Norfolk Southern. The few parts of the Pennsylvania Railroad that went to CSX after the Conrail split were:

The western end of the Fort Wayne Line across western Ohio and northern Indiana.

Pope's Creek Secondary in Maryland, just to the east of Washington, DC.

Landover Subdivision, a former Pennsy freight line in the DC area connecting Amtrak's ex-Pennsy Northeast Corridor and CSX's ex-B&O Alexandria Extension on the north end and CSX's RF&P Subdivision on the south end via the ex-Pennsy "Long Bridge" across the Potomac River.

Terre Haute, Indiana-to-East St. Louis, Illinois segment of the St. Louis main line; the segment east of Terre Haute was formerly a New York Central line.

After 1976, the Penn Central Corporation held diversified non-rail assets including the Buckeye Pipeline and a stake in Madison Square Garden. The company began to acquire a portfolio of insurance companies in 1988. In 1994, the company reorganized as American Premier Underwriters, a subsidiary of American Financial Group, which continues to operate as a property and casualty insurance company as-of January 2024.

From Wikipedia’s article on Pennsylvania Railroad, shared under CC BY-SA 4.0.4

Products and brands

Shops

The back shops of the Pennsylvania Railroad were more ingrained in the culture of the corporation than in most other railroads, mainly due to the large output of highly distinctive locomotives produced by them over the course of decades. The earliest locomotive and car repair shops were established in the mid-1850s in West Philadelphia, Harrisburg, Altoona, and Pittsburgh. Those at Altoona, Pennsylvania (below) became the primary repair and erecting facilities for the system throughout its existence and employed up to 16,000 people. The second largest were located in Columbus, Ohio, commonly called the "20th Street Shops" and the "Panhandle Shops," employing up to 8,000 in the 1920s. The shops at Fort Wayne, Indiana were also a major repair facility, first established by the Pittsburgh, Fort Wayne and Chicago Railway. The yards and shops in Wilmington, Delaware were built to serve the southern section of the system, employing up to 2,500 in the 1920s. The car shop at Hollidaysburg, Pennsylvania was the largest in the world, measuring 2,760 by 330 feet. Additional repair facilities were located in Dennison, Ohio; Renovo, Pennsylvania; Pitcairn, Pennsylvania, and Mifflin, Pennsylvania.

Altoona Works

In 1849, Pennsy officials developed plans to construct a repair facility at Altoona. Construction started in 1850, and soon, several small buildings housed a machine shop, woodworking shop, blacksmith shop, locomotive repair shop, and foundry. These facilities were later demolished to make room for continuing expansion.

By 1926, the Altoona Works occupied 217.82 acres (88.15 ha) and consisted of four units: the Altoona Machine Shops, Altoona Car Shops, Juniata Shops, and South Altoona Foundries.

The Altoona Machine Shops consisted of over a dozen buildings and performed locomotive repairs, plus made locomotive repair parts and non-metal castings.

Read the full text

The Altoona Car Shops were built beginning in 1869. By 1926, it included a dozen buildings, built passenger and freight cars, and repaired same.

The Juniata Shops were built out of need for more shop space at Altoona, in 1889. These shops consisted of 10 buildings, and constructed locomotives and performed heavy repairs of locomotives.

The South Altoona Foundries were built, again, out of need for more space at Altoona, in 1904. The shops primarily made gray iron castings.

In 1875, the Altoona Works started a Test Department for Pennsy equipment, both built and purchased. In following years, the Pennsylvania Railroad led the nation in the development of research and testing procedures of practical value for the railroad industry. Use of the testing facilities was discontinued in 1968.

By 1945, the Altoona Works had become one of the largest repair and construction facilities for locomotives and cars in the world. Since 1968, many of the structures of Altoona Works were demolished.

Yards

The Pennsylvania Railroad had several railroad yards (rail yards) throughout its system.

Conway Yard was built in the 1880s, 22 miles (35 km) northwest of Pittsburgh in Conway, Pennsylvania. Conway was built strategically in the middle of the Pennsylvania's system and started as a poling yard. The yard was made into a hump yard in 1901 to increase the volume of cars handled. By 1957, it was the world's largest automatic classification yard.

Crestline Yard was built by the Pittsburgh, Fort Wayne & Chicago Railway around 1863 and significantly improved in the early 1920s by the Pennsy to speed Chicago shipments and eliminate east and westbound freight classification at Fort Wayne. Crestline is located about halfway between Pittsburgh and Chicago in Crestline, Ohio, and could hold over 1,600 cars.

Enola Yard was built in the early 1900s and lies across the Susquehanna River from Harrisburg. The yard grew from humble beginnings of 12 tracks to over 140 miles (230 km) of tracks, capable of handling thousands of freight cars and becoming the world's largest freight rail yard by the 1940s.

Sunnyside Yard was completed in 1910 for use with Penn Station in New York City. The yard is across the East River from Penn Station in Manhattan, situated in Sunnyside, Long Island. Sunnyside yard was capable of storing over 1,000 passenger cars, occupying a roughly rectangular area 8,815 feet (2,687 m) long by 1,625 feet (495 m) wide; 192 acres (78 ha) in all.

Major passenger stations

The Pennsy built several grand passenger stations, alone or with other railroads. These architectural marvels, whose city name was usually preceded by "Penn Station", were the hubs for the PRR's passenger service. Many are still in use today, served by Amtrak and regional passenger carriers.

From Wikipedia’s article on Pennsylvania Railroad, shared under CC BY-SA 4.0.4

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Acquisitions

  1. 1966Acquired Six Flags1
  2. 1930Acquired West Jersey and Seashore Railroad1
  3. Succeeded Allegheny and South Side Railway1
  4. Succeeded Cincinnati, Lebanon and Northern Railway1
  5. Succeeded Cleveland, Akron and Columbus Railroad1
  6. Succeeded Cumberland Valley Railroad1
  7. Succeeded Erie and Pittsburgh Railroad1
  8. Succeeded Grand Rapids and Indiana Railroad1
  9. Succeeded Junction Railroad1
  10. Succeeded Pennsylvania Company1
  11. Succeeded Philadelphia and Columbia Railroad1
  12. Succeeded Sunbury and Lewistown Railroad1
  13. Succeeded by Penn Central Transportation Company1

Employees over time

  • 1946151,1611

Revenue over time

As stated on Wikidata, in the currency reported.

Revenue

  • 1946$866.9M1

Net income

  • 1946-$8.5M1

Timeline

  1. Jan 31, 1968Dissolved Dissolved1
  2. Apr 13, 1846Founded Founded1