List of road routes in South Australia

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Roads routes in South Australia comprise both National Highways and state routes. All routes are alphanumeric, with the first letter denoting the standard or function of the road.

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]

National Highways

Route Component roads From Via To Length Notes

National Highway A1
Mawson Lakes Port Wakefield, Snowtown, Port Augusta, Kimba, Kyancutta, Ceduna SA/WA Border 1,238 km (769 mi) Part of Highway 1 (South Australia).[i]
Princes Highway Murray Bridge Swanport Bridge Tailem Bend 22 km (14 mi)

National Highway M1
South Eastern Freeway Glen Osmond Murray Bridge 69 km (43 mi)

National Highway A8
Dukes Highway Tailem Bend Coonalpyn, Tintinara, Keith, Bordertown SA/VIC Border 192 km (119 mi)

National Highway A16
Grand Junction Road

National Highway A17
Glen Osmond Northfield Urban road with no grade separations

National Highway A20
Gawler SA/VIC Border formerly National Highway 20

National Highway A87
Stuart Highway Port Augusta Pimba, Coober Pedy SA/NT Border 928 km (577 mi)

Other routes

Route numbers[4]

Route Component roads From Via To Length Notes

Formerly designated A21 on a different route in the southwest, listed clockwise from Port Road

Glen Osmond Adelaide Mawson Lakes 19 km (12 mi) discontinuous across the Adelaide city centre

Princes Highway Tailem Bend Meningie, Kingston SE, Millicent Mt Gambier

Southern Expressway Bedford Park Noarlunga 18.4 km (11 mi)
North-South Motorway Wingfield Regency Park 4.8 km (3 mi) Called the South Road Superway while being built
Northern Expressway Waterloo Corner Gawler 23 kilometres (14 mi)

South Road Regency Park Darlington

Cross Road Glen Osmond Plympton 9.5 km (6 mi)

Anzac Highway Adelaide Glenelg 14.7 km (9 mi)

Sir Donald Bradman Drive Adelaide West Beach 8.1 km (5 mi) Formerly Burbridge Rd

Port Road, Commercial Road Hindmarsh Port Adelaide 9.9 km (6 mi) [2]

Hillbank Port Adelaide


Torrens Valley Scenic Drive Nuriootpa Angaston, Mt Pleasant, Birdwood Tea Tree Gully


Adelaide city centre Houghton

Mallee Highway Tailem Bend Lameroo, Pinnaroo Ouyen, Victoria

Darlington Victor Harbor

Beverley Darlington

Alberton Port Noarlunga

Modbury Gepps Cross Outer Harbor [2]

Glen Osmond Gepps Cross [2]

Paralowie Modbury

Barossa Valley Way Gawler Nuriootpa

Main North Road North Adelaide Gawler Originally only north of Gepps Cross[2], then A52 for a few years, changed (back) to A20 in 2017
Former designation replaced by City Ring Route, listed clockwise from the north-west corner of Adelaide city centre

North Adelaide Dry Creek

Old Noarlunga Yankalilla, Cape Jervis, Penneshaw, Kingscote Cape Borda

  • Gorge Road
  • Little Para Road
  • South Para Road
  • Lyndoch Valley Road
  • Angaston Road

Main North Road Stirling North Gawler Runs from Stirling North to Wilmington, and from Giles Corner to Gawler

Stirling Aldgate Strathalbyn Mt Barker Road from Stirling to Aldgate, then Strathalbyn Road to Strathalbyn

  • Warren Road
  • Onkaparinga Valley Road
  • Echunga Road - Between Hahndorf and Echunga
  • Battunga Road - Between Echunga and Meadows
  • Brookman Road - Between Meadows and Kuitpo Forest
  • Meadows Road - Between Kuitpo Forest and Willunga
  • Old Willunga Hill Road
  • Pages Flat Road
Williamstown Birdwood, Willunga Myponga

  • Cricks Mill Road
  • Williamstown Road
  • Mannum Road
  • Tungkillo Road
  • Reedy Creek Road
  • Swanport Road
Mount Pleasant Murray Bridge


  • Wellington Road (Mt Barker-Wistow)
  • Long Valley Road - (Wistow-Strathalbyn)
  • Strathalbyn–Goolwa Road
  • Goolwa-Victor Harbor (Goolwa - Port Elliot)
  • Port Elliot Road - (Port Elliot - Victor Harbor)
  • Range Road (Victor Harbor - Delamere)
Mount Barker Strathalbyn, Goolwa, Port Elliot, Victor Harbor Delamere

Former designation for Main North Road Gawler Elizabeth, Salisbury Gepps Cross 32 km (20 mi)' [iii] Formerly National Highway 20, now A20 since 2017

Murray Bridge Karoonda, Loxton Berri 172 km (107 mi)

Ucolta Winninowie 123 km (76 mi) [iv]

Bordertown Pinnaroo, Paruna Loxton [5]

Goyder Highway Monash Burra Crystal Brook

Riddoch Highway Keith Padthaway, Naracoorte, Coonawarra, Penola, Tarpeena, Mount Gambier Port MacDonnell 239 kilometres (149 mi) A66 Keith-Mt Gambier, B66 to Port MacDonnell

Wilkins Highway (part) Jamestown Hallett

17km south of Port Pirie Gladstone, Jamestown, Peterborough Ucolta

RM Williams Way Clare Spalding, Jamestown, Orroroo, Carrieton Hawker

Thiele Highway Gawler Belt Kapunda, Eudunda Morgan

Gawler Clare, Gladstone, Melrose, Wilmington Quorn 281 km (175 mi)

Stirling North Quorn, Hawker, Leigh Creek Lyndhurst 289 km (180 mi) Much of this route still is designated

  • Port Wakefield-Balaklava Road
  • Curio Road
  • Marrabel Road
Port Wakefield Balaklava, Auburn, Saddleworth, Marrabel Eudunda 100 km (62 mi)

Copper Coast Highway Port Wakefield Kulpara, Paskeville, Kadina Wallaroo 58 km (36 mi)

Yorke Highway NW Port Wakefield Ardrossan, Minlaton, Marion Bay Stenhouse Bay 182 km (113 mi)

St Vincent Highway south of Ardrossan Port Vincent, Stansbury, Edithburgh, Yorketown Warooka 101 kilometres (63 mi)

Spencer Highway Port Pirie Kadina, Moonta, Maitland Minlaton 199 km (124 mi) [v] Note: Spencer Highway and route B89 differ between Alford and Moonta: B89 passes through Kadina, Spencer Highway through Wallaroo.

Tod Highway Kyancutta Lock West of Pt Lincoln

Birdseye Highway Cowell Lock Elliston

Pimba Woomera, Roxby Downs Olympic Dam

Lincoln Highway Port Augusta Whyalla Port Lincoln
Flinders Highway Port Lincoln Streaky Bay Ceduna

Southern Ports Highway Millicent Beachport, Robe Kingston SE 119 kilometres (74 mi)

Punt Rd Mt Gambier SA/VIC Border

  • Old Sturt Highway
  • Berri-Renmark Rd
Barmera Berri Renmark

Wimmera Highway Continuation of VIC B240

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. ^ a b c d e f "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. Retrieved 12 September 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. ^ "Road Route Numbers (Trail Blazer)". Department of Planning, Transport and Infrastructure. 13 December 2017. Retrieved 30 March 2018.
  5. ^ "Murray Mallee, Riverland" (PDF). Naming of State Rural Roads. Government of South Australia. 6 December 2013. Rack Plan 870. Retrieved 3 October 2014.
  1. ^ Google (18 November 2013). "Driving directions – National A1 South Australia" (Map). Google Maps. Google. Retrieved 18 November 2013.
  2. ^ Google (18 November 2013). "Driving directions – B10 South Australia" (Map). Google Maps. Google. Retrieved 18 November 2013.
  3. ^ Google (19 November 2013). "Driving directions – B52 South Australia" (Map). Google Maps. Google. Retrieved 19 November 2013.
  4. ^ Google (19 November 2013). "Driving directions – B56 South Australia" (Map). Google Maps. Google. Retrieved 19 November 2013.
  5. ^ Google (19 November 2013). "Driving directions – B89 South Australia" (Map). Google Maps. Google. Retrieved 19 November 2013.
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