Highway 1 (South Australia)

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Highway 1
South Australia
Map of South Australia with Highway 1 highlighted in red
General information
Type Highway
Length 1,717 km (1,067 mi)
Opened 1955
Route number(s)
  • B1
  • (south of Murray Bridge)
  • National Highway M1
  • (Murray Bridge to Glen Osmond)
  • A1
  • (Glen Osmond to Waterloo Corner)
  • National Highway A1
  • (Waterloo Corner to Eucla)
Major junctions
SA/VIC border end near Mount Gambier
SA/WA border end near Eucla
Major settlements Millicent, Kingston SE, Murray Bridge, Mount Barker, Adelaide, Port Wakefield, Port Augusta, Ceduna
Highway system

In South Australia, Highway 1 is a 1,717-kilometre (1,067 mi) long[1] 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 1, M1, A1, or B1, depending on the state route numbering system, and parts are concurrent with National Highway routes. In South Australia, most of the highway is designated as route A1, with multi-lane, dual-carriage-way sections generally designated route M1. South-east of Tailem Bend, it is designated route B1.

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


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]

Route description[edit]

In South Australia, the highway connects:

Major intersections[edit]


Route map: Google

KML is from Wikidata
  1. ^ Google (18 March 2013). "Highway 1 (South Australia)" (Map). Google Maps. Google. Retrieved 18 March 2013. 
  2. ^ Taylor, David (2012). The Highway One travel companion. Volume 1, Melbourne to Tweed Heads. Salisbury, Queensland: Boolarong Press. p. 9. ISBN 9780987218902. 

See also[edit]