Highway 1 (South Australia)

In South Australia, Highway 1 is a 1,715-kilometre (1,066 mi)[1] long route that follows the coastline of the state, from the Victorian border near Mount Gambier to the Western Australian border near Eucla. Highway 1 continues around the rest of Australia, joining all mainland state capitals, and connecting major centres in Tasmania. All roads within the Highway 1 system are allocated a road route numbered M1, A1, B1 or R1, depending on the state route numbering system. In South Australia, most of the highway is designated as route A1, with multi-lane, dual-carriage-way sections generally designated route M1, and the alignment around the Adelaide CBD designated route R1. South-east of Tailem Bend, it is designated route B1.

Highway 1

   
Map of South Australia with Highway 1 highlighted in red
General information
TypeHighway
Length1,715 km (1,066 mi)[1]
Opened1955
Route number(s)
  • A1
  • (SA/VIC border to Mount Gambier)
  • B1
  • (Mount Gambier to Tailem Bend)
  • A1
  • (Tailem Bend to Murray Bridge)
  • M1
  • (Murray Bridge to Glen Osmond)
  • A1
  • (Glen Osmond to Dulwich)
  • R1
  • (Dulwich to Medindie)
  • A1
  • (Medindie to Eucla)
Major junctions
SA/VIC border endnear Mount Gambier
 
SA/WA border endnear Eucla
Location(s)
Major settlementsMillicent, Kingston SE, Murray Bridge, Mount Barker, Adelaide, Port Wakefield, Port Augusta, Ceduna
Highway system
Overhead sign showing Port Wakefield Road as A1, in Mawson Lakes

History

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Highway 1 was created as part of the National Route Numbering system, adopted in 1955. The route was compiled from an existing network of state and local roads and tracks.[2] It was meant to be a National Route between the Victorian Border near Mt. Gambier and Adelaide. In 1958, it was extended northward from Adelaide to Port Augusta, and westward, toward the Eyre/Lincoln highway junction. The Eyre Highway, the Port Wakefield-Port Augusta Road, Port Wakefield Road, and the South Eastern Freeway were declared National Highways in November 1974. Since, the route has remained static.[3]

Route description

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In South Australia, the highway connects:

Major intersections

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References

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KML is from Wikidata
  1. ^ a b "Highway 1, South Australia" (Map). Google Maps. Retrieved 1 August 2022.
  2. ^ Taylor, David (2012). The Highway One travel companion. Volume 1, Melbourne to Tweed Heads. Salisbury, Queensland: Boolarong Press. p. 9. ISBN 9780987218902. Archived from the original on 6 October 2016. Retrieved 19 March 2013.
  3. ^ "Ozroads: Highway One (SA)". www.ozroads.com.au. Retrieved 17 December 2023.

See also

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