List of Highways in South Australia
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List of Highways in South Australia

South Australia
General highways map of South Australia
Highways of south eastern South Australia

South Australia is distinctly divided into two main areas; the well watered and populated southeastern corner and the arid outback for the rest of the state. As a result, highways are concentrated mainly in the southeast. The Eyre Highway to Perth and Stuart Highway to Darwin are the only significant highways for the remaining part of the state. The remaining roads are outback tracks. This is the list of highways in South Australia.

Road numbering

Since 1955 South Australia had major rural roads numbered as part of national routes and Highways. In 1998/1999 South Australia introduced "Trailblazers" with A, B and M route numbers in the Metropolitan area and tourist areas of Victor Harbour and the Barossa Valley.[1][2] This system was extended to cover country areas starting in 1999/2000.[3]

These route numbers are used on signs and maps and distinct from the four digit numbers for major roads and eight digit numbers for streets used internally by the Highways Department and later Departments of Transport to identify each road.


South Australian expressway
A9 Port River Expressway

In South Australia, expressway may refer to a controlled access highway with no at-grade intersections or a limited access road of slightly lower standard with at-grade intersections at some locations. Currently there are three constructed expressways in Adelaide:

  • Southern Expressway 21 km (13 mi) (formerly the world's longest reversible one way freeway), completed in 1997, with duplication completed in 2014
  • Port River Expressway 5.5 km (3.4 mi), completed in 2008
  • / Northern Expressway 23 km (14 mi), completed in 2010
  • North-South Motorway, made up of (from north to south)
    • the Northern Connector, 15.5 km (9.6 mi), completed in 2020;[4]
    • the South Road Superway, 2.8 km (1.7 mi), completed in 2014;[5]
    • the Regency Road to Pym Street stretch, 1.8 km (1.1 mi), currently under construction;[6]
    • the Torrens to Torrens, 4 km (2.5 mi), completed in 2018[7]

National highways



State highways



Major arterial roads

Outback tracks

Although not highways as such, unsealed outback tracks form important links to remote communities and areas, the significant ones include;

See also


  1. ^ "Metropolitan Publications". Department for Transport, Urban Planning and the Arts, Metropolitan Region. Archived from the original on 21 April 2000. Trailblazers is a new route numbering system that guides both local and visiting road users through unfamiliar areas by the most efficient routes. This brochure includes a map illustrating the 19 designated routes in the metropolitan area extending to main tourism locations of Victor Harbour and the Barossa Valley. The new signs display the route number, the name of the road being travelled on, major crossroads being approached and destinations along each leg.
  2. ^ "Where the new routes are". Department for Transport, Urban Planning and the Arts, Transport SA, Metropolitan Region. Archived from the original on 10 September 2002.
  3. ^ The Hon. Diana Laidlaw (24 June 1999). "Address to Estimates Committee B" (PDF). Hansard. House of Assembly - Estimates Committee B. Parliament of South Australia: 102. Archived from the original (PDF) on 14 July 2014. Retrieved 2012. In terms of each class of output to be delivered by Transport SA in the year 1999-2000, the highlights are as follows: ... extension of the route numbering system across the rural arterial network ...
  4. ^
  5. ^
  6. ^
  7. ^

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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