Irish gauge
Encyclopedia

Irish gauge railways use a track gauge
Rail gauge
Track gauge or rail gauge is the distance between the inner sides of the heads of the two load bearing rails that make up a single railway line. Sixty percent of the world's railways use a standard gauge of . Wider gauges are called broad gauge; smaller gauges, narrow gauge. Break-of-gauge refers...

 of . It is used in
  • Ireland
    Rail gauge in Ireland
    The track gauge adopted by the mainline railways in Ireland is . This unusual gauge is currently otherwise found only in the Australian states of Victoria, southern New South Wales and South Australia , and in Brazil...

     (1800 km (1,118 mi) )
  • Australia (4017 km (2,496 mi)) where it is also known as Victorian Broad Gauge
  • Brazil
    Rail transport in Brazil
    Rail transport in Brazil began in the 19th century and there were many different railway companies. The railways were nationalised under RFFSA in 1957...

     (4057 km (2,521 mi)) where it is also known as Bitola larga no Brasil.


It was used by the Grand Duchy of Baden State Railway
Grand Duchy of Baden State Railway
The Grand Duchy of Baden was an independent state in what is now southwestern Germany until the creation of the German Empire in 1871. It had its own state-owned railway company, the Grand Duchy of Baden State Railways , which was founded in 1840...

 between 1840 and 1855.

Timeline

600 BCE:The Diolkos
Diolkos
The Diolkos was a paved trackway near Corinth in Ancient Greece which enabled boats to be moved overland across the Isthmus of Corinth. The shortcut allowed ancient vessels to avoid the dangerous circumnavigation of the Peloponnese peninsula...

 (Δίολκος) across the Isthmus of Corinth
Isthmus of Corinth
The Isthmus of Corinth is the narrow land bridge which connects the Peloponnese peninsula with the rest of the mainland of Greece, near the city of Corinth. The word "isthmus" comes from the Ancient Greek word for "neck" and refers to the narrowness of the land. The Isthmus was known in the ancient...

 in Greece
Greece
Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

 – a grooved paved trackway – was constructed with an average gauge of 1600 mm.

1840: The Grand Duchy of Baden State Railway
Grand Duchy of Baden State Railway
The Grand Duchy of Baden was an independent state in what is now southwestern Germany until the creation of the German Empire in 1871. It had its own state-owned railway company, the Grand Duchy of Baden State Railways , which was founded in 1840...

 was constructed to 1600 mm gauge.

1843: The Board of Trade
Board of Trade
The Board of Trade is a committee of the Privy Council of the United Kingdom, originating as a committee of inquiry in the 17th century and evolving gradually into a government department with a diverse range of functions...

 of the United Kingdom recommended the use of in Ireland, after investigating a dispute caused by diverse gauges in Ireland.

1846: An Act of Parliament, the Railway Regulation (Gauge) Act 1846
Railway Regulation (Gauge) Act 1846
The Railway Regulation Act 1846 introduced mandated standard gauges of for Great Britain, and for Ireland. This signalled the end for Brunel's broad gauge network.-See also:* The GWR "gauge war"* Rail gauge in Ireland* Standard gauge...

, made this gauge mandatory on the island of Ireland.

1854–55: The Grand Duchy of Baden State Railway was converted
Gauge conversion
In rail transport, gauge conversion is the process of converting a railway from one rail gauge to another, through the alteration of the railway tracks...

 to standard gauge
Standard gauge
The standard gauge is a widely-used track gauge . Approximately 60% of the world's existing railway lines are built to this gauge...

.

2009: The 125 km (77.7 mi) long Oaklands railway line, Victoria
Oaklands railway line, Victoria
The Oaklands railway line is a freight only railway line in north eastern Victoria, Australia. The line branches from the main North East railway at Benalla station until it connects with the New South Wales railway network at Oaklands, New South Wales....

 is being converted
Gauge conversion
In rail transport, gauge conversion is the process of converting a railway from one rail gauge to another, through the alteration of the railway tracks...

 to standard gauge
Standard gauge
The standard gauge is a widely-used track gauge . Approximately 60% of the world's existing railway lines are built to this gauge...

. This project is relatively easy because the old line has wooden sleepers.
The 200 km (124.3 mi) of the Albury-Wodonga railway line, Victoria is being converted to standard gauge
Standard gauge
The standard gauge is a widely-used track gauge . Approximately 60% of the world's existing railway lines are built to this gauge...

.

Summary

Country/region Notes
Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

States of South Australia
South Australia
South Australia is a state of Australia in the southern central part of the country. It covers some of the most arid parts of the continent; with a total land area of , it is the fourth largest of Australia's six states and two territories.South Australia shares borders with all of the mainland...

, Victoria (Victorian broad gauge
Victorian broad gauge
Rail gauge in Australia displays significant variation, which has been an ongoing problem for transportation on the Australian continent, for over a hundred years.-Track gauges and route km:The most used gauges are Main gauges:...

), New South Wales
New South Wales
New South Wales is a state of :Australia, located in the east of the country. It is bordered by Queensland, Victoria and South Australia to the north, south and west respectively. To the east, the state is bordered by the Tasman Sea, which forms part of the Pacific Ocean. New South Wales...

 (only a few routes connected to Victoria) and
Tasmania, Australia (one line, Deloraine
Deloraine, Tasmania
Deloraine is a town on the Meander River, in the central north of Tasmania, Australia. It lies 50 km west of Launceston and 52 km south of Devonport along the Bass Highway. It is part of the Meander Valley Council. At the 2006 census, Deloraine had a population of 2,243.The region was...

 to Launceston
Launceston, Tasmania
Launceston is a city in the north of the state of Tasmania, Australia at the junction of the North Esk and South Esk rivers where they become the Tamar River. Launceston is the second largest city in Tasmania after the state capital Hobart...

, opened in 1871, was converted to in 1888).
Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

Lines connecting the states of Rio de Janeiro
Rio de Janeiro (state)
Rio de Janeiro is one of the 27 states of Brazil.Rio de Janeiro has the second largest economy of Brazil behind only São Paulo state.The state of Rio de Janeiro is located within the Brazilian geopolitical region classified as the Southeast...

,
São Paulo
São Paulo (state)
São Paulo is a state in Brazil. It is the major industrial and economic powerhouse of the Brazilian economy. Named after Saint Paul, São Paulo has the largest population, industrial complex, and economic production in the country. It is the richest state in Brazil...

 and Minas Gerais
Minas Gerais
Minas Gerais is one of the 26 states of Brazil, of which it is the second most populous, the third richest, and the fourth largest in area. Minas Gerais is the Brazilian state with the largest number of Presidents of Brazil, the current one, Dilma Rousseff, being one of them. The capital is the...

;
E.F.Carajás in Pará
Pará
Pará is a state in the north of Brazil. It borders the Brazilian states of Amapá, Maranhão, Tocantins, Mato Grosso, Amazonas and Roraima. To the northwest it also borders Guyana and Suriname, and to the northeast it borders the Atlantic Ocean. The capital is Belém.Pará is the most populous state...

 and Maranhão
Maranhão
Maranhão is a northeastern state of Brazil. To the north lies the Atlantic Ocean. Maranhão is neighbored by the states of Piauí, Tocantins and Pará. The people of Maranhão have a distinctive accent...

 states, and Ferronorte in
Mato Grosso
Mato Grosso
Mato Grosso is one of the states of Brazil, the third largest in area, located in the western part of the country.Neighboring states are Rondônia, Amazonas, Pará, Tocantins, Goiás and Mato Grosso do Sul. It also borders Bolivia to the southwest...

 and Mato Grosso do Sul
Mato Grosso do Sul
Mato Grosso do Sul is one of the states of Brazil.Neighboring Brazilian states are Mato Grosso, Goiás, Minas Gerais, São Paulo and Paraná. It also borders the countries of Paraguay and Bolivia to the west. The economy of the state is largely based on agriculture and cattle-raising...

 states.
Estrada de Ferro Jari
Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

Grand Duchy of Baden State Railway
Grand Duchy of Baden State Railway
The Grand Duchy of Baden was an independent state in what is now southwestern Germany until the creation of the German Empire in 1871. It had its own state-owned railway company, the Grand Duchy of Baden State Railways , which was founded in 1840...

 1840 - 1855
Ireland
Ireland
Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

Irish broad gauge
New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

Canterbury Provincial Railways
Canterbury Provincial Railways
The Canterbury Provincial Railways were an early part of the railways of New Zealand. Built by the Canterbury Provincial government to the broad gauge of 5 feet 3 inches , the railway reached most of the Canterbury region by the time the province was abolished in 1876...

 
(All routes gauge converted to by 1876)

Similar gauges

Pennsylvania trolley gauge
Pennsylvania trolley gauge
A number of North American streetcar lines intentionally varied from standard gauge. This may have been to make the streetcar companies less-tempting targets for takeovers by the steam railroads , which would be unable to run their trains over the streetcar tracks...

 and the Dublin and Lucan Steam tramway gauge are similar.

Locomotives

One of the supposed advantages of the broader Irish Gauge, compared to standard gauge
Standard gauge
The standard gauge is a widely-used track gauge . Approximately 60% of the world's existing railway lines are built to this gauge...

 is the greater space between the wheels for bigger cylinders. In practice, the island of Ireland does not appear to have any heavily loaded and steeply graded lines that would need especially powerful locomotives. The most powerful locomotives on the systems of this gauge are:
  • Ireland
    Ireland
    Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

     - GSR Class 800 – Tractive effort: 155 kN (34,845.4 lbf)
  • Victoria
    Victoria (Australia)
    Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....

     - Victorian Railways H class
    Victorian Railways H class
    The H class was an express passenger steam locomotive that ran on Victorian Railways from 1941 to 1958. Intended to eliminate the use of double heading A2 class locomotives on Overland services on the steeply graded Western line to Adelaide, wartime restrictions led to only one locomotive being built...

     - 245 kN (55,078.2 lbf); 23.6t axleload - 1 in 48 grads
  • Brazil
    Brazil
    Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...



See also

  • Rail gauge in Australia
  • Rail transport in Brazil
    Rail transport in Brazil
    Rail transport in Brazil began in the 19th century and there were many different railway companies. The railways were nationalised under RFFSA in 1957...

  • Rail gauge in Ireland
    Rail gauge in Ireland
    The track gauge adopted by the mainline railways in Ireland is . This unusual gauge is currently otherwise found only in the Australian states of Victoria, southern New South Wales and South Australia , and in Brazil...

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