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

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.

Overhead sign showing Port Wakefield Road as A1, in Mawson Lakes

History

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

In South Australia, the highway connects:

Major intersections

References

Template:Attached KML/Highway 1 (South Australia)
KML is from Wikidata
  1. 1 2 Google (1 August 2022). "Highway 1, South Australia" (Map). Google Maps. Google. 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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