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Beltway

Encyclopedia : B : BE : BEL : Beltway

For the American political term, see Inside the Beltway and Beltway bandits.
A sign on the Hampton Roads Beltway in Virginia, United States, traveling on the outer loop (counterclockwise).
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A sign on the Hampton Roads Beltway in Virginia, United States, traveling on the outer loop (counterclockwise).

A beltway (American English), ring road or orbital motorway (British English) is a circumferential highway found around or within many cities.

Beltway, orbital motorway and similar terms refer to an expressway/motorway/freeway style standard road that often originally enclosed the built up area and was later encroached upon by developed areas.

Ring road may sometimes refer to a beltway-style road, but more commonly indicates a road or series of roads within a city or town that have been joined together by town planners to form an orbital distributor style road, but where the standard of road could be anything from an ordinary city street up to an expressway level. The principal difference is that a ring road is an orbital distributor road system designed from already existing roads, as opposed to a beltway which is designed from new as such a road system. A ring road designation also implies a more inner-city road designed to route traffic around a city centre, as opposed to routing traffic around a larger conurbation.

Some cities have proposed or built multiple concentric beltways and/or ring roads.

Many beltway-style roads are part of a wider highway system, for example in the United States beltways are commonly a part of an interstate highway system.

In the US, the slang word Beltway occasionally refers to politics conducted inside the Beltway in Washington, DC.

Contents

World List

South Africa has the most advanced road system of any African country. Most of the major cities' ring roads were built in the 1970s. Well constructed, they are on par with the best in the Western world.

Americas (

  • Periférico Manuel Gómez Morín, Guadalajara, Jalisco. The ring has a gap: it starts at the Autopista México 44, circles around the city as a 3+3 lane highway, becomes a 2+2 lane road in the Tonalá municipality, and ends abruptly in the Río Nilo avenue.
  • Anillo Periférico, Mexico City. The beltway gained major media attention when the Mexico City mayor, Andrés Manuel López Obrador, started a project to turn the ring into a two-story highway. As of 2005, the second floor is currently under construction.

  • I-526, (Mark Clark Expressway/James Island Expressway), Charleston (unfinshed)

  • Route 9, a ring road linking most of the suburbs in Hong Kong together

Major Roads in Metro Manila

  • Brisbane Orbital, comprising:
  • *Gateway Motorway (eastern orbital)
  • *Logan Motorway (southern orbital)
  • *Western Bypass Motorway (proposed western orbital)
  • Inner City Bypass (inner north ring road)

  • Kehä I (Ring 1), encircling Helsinki while also passing through Espoo, for local traffic
  • Kehä II (Ring 2), traffic loadout highway through Espoo, for local traffic (Kehä II is not an actual ring road but only a stub - the complete ring is not yet even planned)
  • Kehä III (Ring 3), bypass of Helsinki, part of E18, encircling Helsinki through Vantaa, Espoo and Kirkkonummi, for local traffic and long distance traffic

  • Périphérique, Paris
  • Périphérique de Toulouse (A620, A612), Toulouse
  • Périphérique de Lyon (A7, N383), Lyon. West segment is still under construction.
  • Périphérique de Bordeaux : (A630, N230), Bordeaux
  • Périphérique de Caen ( N814), Caen
  • Périphérique de Lille (A22, A25, N352) Lille
  • Périphérique de Nantes (N8444, N249), Nantes. Longest beltway of France.
  • Périphérique de Rennes (N136), Rennes

  • Route 1, which circles the entire country

source: http://kartta.hel.fi/opas/en/

See also

 

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