Frog war
Encyclopedia
In American railroading, a frog war occurs when a private railroad company attempts to cross the tracks of another, and this results in hostilities, with the courts usually getting involved, but often long after companies have taken the matter in their own hands and settled, with hordes of workers battling each other. It is named after the frog, the piece of track that allows the two tracks to join or cross and is usually part of a level junction
Level junction
In U.S. railroad practice, a level junction is a railway junction that has a track configuration in which merging or crossing railroad lines provide track connections with each other that require trains to cross over in front of opposing traffic at grade In U.S. railroad practice, a level junction...

 or railroad switch
Railroad switch
A railroad switch, turnout or [set of] points is a mechanical installation enabling railway trains to be guided from one track to another at a railway junction....

.

Sometimes the first railroad was built specifically to delay the completion of the second.

Division of costs

It is generally the case that the second railway to arrive has to bear the cost of the special trackwork needed to cross the first. This includes the cost of any interlocking tower or signal box
Signal box
On a rail transport system, signalling control is the process by which control is exercised over train movements by way of railway signals and block systems to ensure that trains operate safely, over the correct route and to the proper timetable...

. The latter is not necessarily to the disadvantage of the second railway, since it can signal its trains through the junction ahead of those belonging to the first railway, depending on who employs the Signalman
Signalman (rail)
A signalman or signaller is an employee of a railway transport network who operates the points and signals from a signal box in order to control the movement of trains.- History :...

.

"Frog Wars" with oil pipelines

In the early days oil mostly travelled by rail, but gradually oil companies built oil pipelines. Not wanting to lose business, railway companies often refused permission to oil companies for pipelines to cross their tracks.

Bridges and riverboats

Abraham Lincoln
Abraham Lincoln
Abraham Lincoln was the 16th President of the United States, serving from March 1861 until his assassination in April 1865. He successfully led his country through a great constitutional, military and moral crisis – the American Civil War – preserving the Union, while ending slavery, and...

 participated in a celebrated court case that decided that railroads had as much right to bridge rivers as the riverboat had the right to navigate those rivers. Nova Scotia's Shubenacadie Canal
Shubenacadie Canal
The Shubenacadie Canal is a Canadian canal in central Nova Scotia, linking Halifax Harbour with Shubenacadie Grand Lake which drains into the Bay of Fundy by way of the Shubenacadie River. Currently small craft use the river and lakes, but no locks are fully operational...

 was rendered useless by a railway bridge built across it in 1858.

United States

Note: The first railroad line built is the first one named.

  • 1853: Greater Grand Crossing, Chicago - feud between the Lake Shore and Michigan Southern Railway
    Lake Shore and Michigan Southern Railway
    The Lake Shore and Michigan Southern Railway, sometimes referred to as the Lake Shore, was a major part of the New York Central Railroad's Water Level Route from Buffalo, NY to Chicago, primarily along the south shore of Lake Erie and across northern Indiana...

     and the Illinois Central Railroad
    Illinois Central Railroad
    The Illinois Central Railroad , sometimes called the Main Line of Mid-America, is a railroad in the central United States, with its primary routes connecting Chicago, Illinois with New Orleans, Louisiana and Birmingham, Alabama. A line also connected Chicago with Sioux City, Iowa...

    ; a crash killed 18 people.

  • 1870s: Denver and Rio Grande Western Railroad
    Denver and Rio Grande Western Railroad
    The Denver & Rio Grande Western Railroad , often shortened to Rio Grande or D&RGW, formerly the Denver & Rio Grande Railroad, is a defunct U.S. railroad company. The railroad started as a narrow gauge line running south from Denver, Colorado in 1870; however, served mainly as a transcontinental...

     vs. Atchison, Topeka and Santa Fe Railroad vs. Union Pacific Railroad
    Union Pacific Railroad
    The Union Pacific Railroad , headquartered in Omaha, Nebraska, is the largest railroad network in the United States. James R. Young is president, CEO and Chairman....

     in Colorado
    Colorado
    Colorado is a U.S. state that encompasses much of the Rocky Mountains as well as the northeastern portion of the Colorado Plateau and the western edge of the Great Plains...

    ; three railroads vying for suitable mountain passes.
  • December 2, 1870–January 9, 1871: The Erie Railroad
    Erie Railroad
    The Erie Railroad was a railroad that operated in New York State, New Jersey, Pennsylvania, Ohio, Indiana, and Illinois, originally connecting New York City with Lake Erie...

     vs. Morris and Essex Railroad
    Morris and Essex Railroad
    The Morris and Essex Railroad was a railroad across northern New Jersey, later part of the main line of the Delaware, Lackawanna and Western Railroad.-History:...

    's Boonton Branch
    Boonton Branch
    The Boonton Branch refers to the railroad line that was completed in 1870 and ran 34 miles from Hoboken, NJ to Denville, NJ as part of the Morris & Essex Railroad, which in turn was part of the Lackawanna Railroad...

     (Delaware, Lackawanna and Western Railroad
    Delaware, Lackawanna and Western Railroad
    The Delaware, Lackawanna and Western Railroad Company was a railroad connecting Pennsylvania's Lackawanna Valley, rich in anthracite coal, to Hoboken, New Jersey, , Buffalo and Oswego, New York...

    ) at the west end of the Erie's Long Dock Tunnel
    Long Dock Tunnel
    The Long Dock Tunnel is a tunnel in New Jersey that runs diagonally through Bergen Hill, a section of the New Jersey Palisades in Hudson County, New Jersey, United States...

     in Jersey City, New Jersey
    Jersey City, New Jersey
    Jersey City is the seat of Hudson County, New Jersey, United States.Part of the New York metropolitan area, Jersey City lies between the Hudson River and Upper New York Bay across from Lower Manhattan and the Hackensack River and Newark Bay...

    .
  • January 6 and January 7, 1876: The Mercer and Somerset Railway
    Mercer and Somerset Railway
    The Mercer and Somerset Railway was a short-lived line of the Pennsylvania Railroad in western New Jersey, built to delay completion of the Delaware and Bound Brook Railroad, part of the National Railway line from Philadelphia, Pennsylvania to New York City.The railroad ran from Somerset Junction...

     (Pennsylvania Railroad
    Pennsylvania Railroad
    The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

    ) vs. the Delaware and Bound Brook Railroad (Reading Railroad) in Hopewell, New Jersey
    Hopewell, New Jersey
    Hopewell is a Borough in Mercer County, New Jersey, United States. As of the United States 2010 Census, the borough population was 1,922.Hopewell was incorporated as a borough by an Act of the New Jersey Legislature on April 14, 1891, from portions of Hopewell Township, based on the results of a...

    .
  • August 7–September 13, 1883: The Southern Pacific Railroad
    Southern Pacific Railroad
    The Southern Pacific Transportation Company , earlier Southern Pacific Railroad and Southern Pacific Company, and usually simply called the Southern Pacific or Espee, was an American railroad....

     vs. the California Southern Railroad
    California Southern Railroad
    The California Southern Railroad was a subsidiary railroad of the Atchison, Topeka and Santa Fe Railway in Southern California. It was organized July 10, 1880, and chartered on October 23, 1880, to build a rail connection between what has become the city of Barstow and San Diego,...

     (a subsidiary of the Atchison, Topeka and Santa Fe Railway
    Atchison, Topeka and Santa Fe Railway
    The Atchison, Topeka and Santa Fe Railway , often abbreviated as Santa Fe, was one of the larger railroads in the United States. The company was first chartered in February 1859...

    ) at Colton, California
    Colton, California
    Colton is a city in San Bernardino County, California, United States. The city is located in the Inland Empire region of the state and is approximately 57 miles east of Los Angeles. The population of Colton is 52,154 according to the 2010 census, up from 47,662 at the 2000 census.Colton is the...

     (just outside of San Bernardino
    San Bernardino, California
    San Bernardino is a city located in the Riverside-San Bernardino metropolitan area , and serves as the county seat of San Bernardino County, California, United States...

    ).
  • March, 1886: The Erie Railroad
    Erie Railroad
    The Erie Railroad was a railroad that operated in New York State, New Jersey, Pennsylvania, Ohio, Indiana, and Illinois, originally connecting New York City with Lake Erie...

     vs. the New Jersey Junction Railroad
    New Jersey Junction Railroad
    The New Jersey Junction Railroad was part of the New York Central Railroad and ran along the Hudson River in Hudson County, New Jersey, from the West Shore Railroad yards at Weehawken Terminal south to Jersey City...

     (New York Central Railroad
    New York Central Railroad
    The New York Central Railroad , known simply as the New York Central in its publicity, was a railroad operating in the Northeastern United States...

    ) at King's Bluff near Weehawken, New Jersey
    Weehawken, New Jersey
    Weehawken is a township in Hudson County, New Jersey, United States. As of the 2010 United States Census, the township population was 12,554.-Geography:Weehawken is part of the New York metropolitan area...

    .
  • September, 1891: The Central Railroad of New Jersey
    Central Railroad of New Jersey
    The Central Railroad of New Jersey , commonly known as the Jersey Central Lines or CNJ, was a Class I railroad with origins in the 1830s, lasting until 1976 when it was absorbed into Conrail with the other bankrupt railroads of the Northeastern United States...

     vs. the Jersey City, Newark and Western Railway
    Jersey City, Newark and Western Railway
    The Jersey City, Newark and Western Railway was incorporated on July 6, 1889 and acquired by the Lehigh Valley Railroad . Construction was completed in 1893...

     (Lehigh Valley Railroad
    Lehigh Valley Railroad
    The Lehigh Valley Railroad was one of a number of railroads built in the northeastern United States primarily to haul anthracite coal.It was authorized April 21, 1846 in the U.S. state of Pennsylvania and incorporated September 20, 1847 as the Delaware, Lehigh, Schuylkill and Susquehanna Railroad...

    ) in southern Jersey City, New Jersey
    Jersey City, New Jersey
    Jersey City is the seat of Hudson County, New Jersey, United States.Part of the New York metropolitan area, Jersey City lies between the Hudson River and Upper New York Bay across from Lower Manhattan and the Hackensack River and Newark Bay...

    .
  • March, 1894: The Cape May and Millville Railroad (Pennsylvania Railroad
    Pennsylvania Railroad
    The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

    ) vs. the Tuckahoe and Cape May Railroad (Reading Railroad) at Woodbine Junction, New Jersey
  • 1897: The Pennsylvania Railroad
    Pennsylvania Railroad
    The Pennsylvania Railroad was an American Class I railroad, founded in 1846. Commonly referred to as the "Pennsy", the PRR was headquartered in Philadelphia, Pennsylvania....

     vs. the New Jersey Junction Connecting Railway
    National Docks Secondary
    National Docks Secondary is freight rail line within Conrail's North Jersey Shared Assets Area in Hudson County, New Jersey, used by CSX Transportation. It provides access to the national rail network to maritime, industrial, and distribution facilities at Port Jersey, the Military Ocean Terminal...

     (Lehigh Valley Railroad
    Lehigh Valley Railroad
    The Lehigh Valley Railroad was one of a number of railroads built in the northeastern United States primarily to haul anthracite coal.It was authorized April 21, 1846 in the U.S. state of Pennsylvania and incorporated September 20, 1847 as the Delaware, Lehigh, Schuylkill and Susquehanna Railroad...

    ) in Jersey City, New Jersey
    Jersey City, New Jersey
    Jersey City is the seat of Hudson County, New Jersey, United States.Part of the New York metropolitan area, Jersey City lies between the Hudson River and Upper New York Bay across from Lower Manhattan and the Hackensack River and Newark Bay...

    .

United Kingdom

  • Battle of Havant
    Denvilles halt
    Denvilles Halt was a station located between Havant and Rowlands Castle on the Portsmouth Direct Line. It was a temporary platform, erected by the L&SWR, as that company's adoption of the Portsmouth Direct line started a dispute with the LB&SCR....

  • Nicky Line
    Nicky Line
    The Nicky Line is the local nickname for the railway that once linked the English towns of Hemel Hempstead and Harpenden via Redbourn. It was officially known as the Harpenden and Hemel Hempstead Railway...

  • Conflict of London and South Western Railway
    London and South Western Railway
    The London and South Western Railway was a railway company in England from 1838 to 1922. Its network extended from London to Plymouth via Salisbury and Exeter, with branches to Ilfracombe and Padstow and via Southampton to Bournemouth and Weymouth. It also had many routes connecting towns in...

     with the London, Brighton and South Coast Railway
    London, Brighton and South Coast Railway
    The London, Brighton and South Coast Railway was a railway company in the United Kingdom from 1846 to 1922. Its territory formed a rough triangle, with London at its apex, practically the whole coastline of Sussex as its base, and a large part of Surrey...

     over the building of the Portsmouth
    Portsmouth
    Portsmouth is the second largest city in the ceremonial county of Hampshire on the south coast of England. Portsmouth is notable for being the United Kingdom's only island city; it is located mainly on Portsea Island...

     branch
  • Conflict between the London, Brighton and South Coast Railway
    London, Brighton and South Coast Railway
    The London, Brighton and South Coast Railway was a railway company in the United Kingdom from 1846 to 1922. Its territory formed a rough triangle, with London at its apex, practically the whole coastline of Sussex as its base, and a large part of Surrey...

     and South Eastern Railway
    South Eastern Railway (UK)
    The South Eastern Railway was a railway company in south-eastern England from 1836 until 1922. The company was formed to construct a route from London to Dover. Branch lines were later opened to Tunbridge Wells, Hastings, Canterbury and other places in Kent...

     for access to Hastings and St Leonards beyond Bo Peep Junction (also see St Leonards West Marina railway station)
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