List of road routes in South Australia
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]
M Routes
| Route | Component roads | From | Via | To | Length | Notes |
|---|---|---|---|---|---|---|
 M1 |
South Eastern Freeway | Glen Osmond | Murray Bridge | 69 km (43 mi) | - continues north-west as  along Glen Osmond Road beyond Adelaide- continues east as along Princes Highway to Tailem Bend- former  shields progressively being replaced by | |
 M2 |
Gawler | Regency Park | 40 km (25 mi) | - to be extended further south eventually to the Southern Expressway as stages of the North-South Motorway project are completed - continues south as  along South Road to Southern Expressway at St Marys | ||
| Southern Expressway | St Marys | Noarlunga Downs | 21 km (13 mi) | Continues north as along South Road to North-South Motorway at Regency Park |
Decommissioned M Routes
| Route | Component roads | From | Via | To | Length | Notes |
|---|---|---|---|---|---|---|
| Former
|
Virginia | Gawler | 22 km (14 mi) | Allocated  upon opening in 2010, reallocated when Northern Connector sector of North-South Motorway commenced construction in 2016 |
A Routes
| Route | Component roads | From | Via | To | Length | Notes |
|---|---|---|---|---|---|---|
A1 |
SA/WA Border | Gepps Cross | 1,242 km (772 mi) | Part of Highway 1: - continues west as  along Eyre Highway into WA eventually to Norseman- former  shields progressively being replaced by | ||
| Gepps Cross | Adelaide | Glen Osmond | 19 km (12 mi) | - discontinuous across the Adelaide city centre, partially  - continues east as along South Eastern Freeway to Murray Bridge- former shields progressively being replaced by | ||
| Princes Highway | Murray Bridge | Swanport Bridge | Tailem Bend | 22 km (14 mi) | - continues west as along South Eastern Freeway to Glen Osmond - continues south as  along Princes Highway to Mount Gambier- former shields progressively being replaced by | |
| Princes Highway | Mount Gambier | SA/VIC Border | 18 km (11 mi) | - continues west as along Princes Highway to Tailem Bend - continues east as along Princes Highway into VIC eventually to Geelong | ||
A2 |
South Road | Regency Park | Darlington | 19 km (12 mi) | Also incorporates former alignments and surface road adjacent to North–South Motorway: - continues north as along North-South Motorway to Gawler- continues south as along Southern Expressway to Noarlunga Downs | |
 A3 |
Cross Road | Plympton | Unley Park | Glen Osmond | 9.5 km (6 mi) | |
 A5 |
Anzac Highway | Adelaide | Plympton | Glenelg | 14.7 km (9 mi) | |
 A6 |
|
Adelaide | Brooklyn Park | West Beach | 8.1 km (5 mi) | |
 A7 |
|
Hindmarsh | Port Adelaide | 9.9 km (6 mi) | ||
 A8 |
Dukes Highway | Tailem Bend | SA/VIC Border | 192 km (119 mi) | - continues east as along Western Highway into VIC eventually to Beaufort - former  shields progressively being replaced by | |
 A9 |
|
Port Adelaide | Elizabeth Vale | 20.9 km (13 mi) | Allocation extended east along Salisbury Highway and John Rice Avenue replacing  in 2017 | |
 A10 |
|
Gilberton | Tea Tree Gully | 16.3 km (10 mi) | Part of Adelaide-Mannum Road: - continues east as  along North East Road to Nurioopta | |
 A11 |
Kent Town | Houghton | 19.9 km (12 mi) | |||
A13 |
Darlington | Victor Harbor | 67.6 km (42 mi) | Allocation north along South Road, Salisbury Highway and John Rice Avenue replaced by / and in 2017 | ||
 A14 |
|
Beverley | Darlington | 15.3 km (10 mi) | ||
 A15 |
|
Alberton | Port Noarlunga | 36 km (22 mi) | ||
 A16 |
|
Outer Harbor | Hope Valley | 31 km (19 mi) | Former  shields progressively being replaced by | |
 A17 |
Northfield | Payneham | Glen Osmond | 13.7 km (9 mi) | Former  shields progressively being replaced by | |
 A18 |
|
Paralowie | Parafield | Modbury | 12.5 km (8 mi) | |
 A20 |
Gepps Cross | SA/VIC Border | 267 km (166 mi) | - continues west as along Sturt Highway into VIC through Mildura, and into NSW eventually to Tarcutta - former  shields progressively being replaced by | ||
 A22 |
Dry Creek | Kilburn | Ovingham | 7.7 km (5 mi) | ||
 A32 |
Gawler | SA/NSW Border | 417 km (259 mi) | Continues west as along Barrier Highway into NSW to Nyngan | ||
 A66 |
Riddoch Highway | Keith | Mount Gambier | 210 km (130 mi) | Continues south as  along Riddoch Highway to Port MacDonnell | |
 A87 |
Stuart Highway | Port Augusta West | SA/NT Border | 928 km (577 mi) | Former  shields progressively being replaced by |
Decommissioned A Routes
| Route | Component roads | From | Via | To | Length | Notes |
|---|---|---|---|---|---|---|
| Former
|
|
Adelaide | North Adelaide | Adelaide | 15.6 km (10 mi) | Replaced by City Ring Route, listed clockwise from the north-west corner of Adelaide city centre |
| Former
|
Main North Road | Gepps Cross | Gawler | 32 km (20 mi) | Formerly , reallocated  when Northern Expressway opened in 2010, reverted to in 2017 |
B routes
Route numbers[4]
| Route | Component roads | From | Via | To | Length | Notes |
|---|---|---|---|---|---|---|
B1 |
Princes Highway | Tailem Bend | Mount Gambier | 350 km (217 mi) | Part of Highway 1: - continues north as along Princes Highway to Murray Bridge- continues east as along Princes Highway into VIC eventually to Geelong | |
B10 |
|
Tea Tree Gully | Nurioopta | 77 km (48 mi) | Part of Adelaide-Mannum Road: - continues west as along North East Road to Adelaide | |
 B12 |
Mallee Highway | Tailem Bend | SA/VIC border | 145 km (90 mi) | Continues east as along Mallee Highway into VIC eventually to Piangil | |
 B19 |
Gawler | Lyndoch | Nuriootpa | 39 km (24 mi) | ||
 B23 |
Main South Road | Old Noarlunga | Cape Jervis | 75 km (47 mi) | Route continues west over Backstairs Passage to Hog Bay Road on Kangaroo Island | |
|
Penneshaw | Cape Borda | 147 km (91 mi) | Route continues east over Backstairs Passage to Main South Road on the South Australian mainland | ||
 B26 |
Greenhill Road | Glenside | Uraidla | Balhannah | 24 km (15 mi) | Allocated in 2019 |
 B27 |
|
Kent Town | Mount Torrens | 37 km (23 mi) | Allocated in 2019 | |
 B28 |
|
Fullarton | Summertown | 25 km (16 mi) | Allocated in 2019 | |
 B31 |
|
Campbelltown | Lyndoch | 49 km (30 mi) | ||
 B33 |
Stirling | Strathalbyn | 37 km (23 mi) | |||
 B34 |
|
Williamstown | Myponga | 109 km (68 mi) | ||
 B35 |
|
Mount Crawford | Murray Bridge | 63 km (39 mi) | Part of Adelaide-Mannum Road | |
 B36 |
|
Palmer | Mannum | Murray Bridge North | 38 km (24 mi) | Part of Adelaide-Mannum Road |
 B37 |
|
Mount Barker | Delamere | 126 km (78 mi) | ||
 B45 |
|
Strathalbyn | Langhorne Creek | Wellington East | 49 km (30 mi) | |
 B55 |
|
Murray Bridge | Berri | 202 km (126 mi) | ||
 B56 |
|
Winninowie | Ucolta | 123 km (76 mi) | ||
 B57 |
|
Loxton | Cadgee | 292 km (181 mi) | [5] | |
 B64 |
Goyder Highway | Crystal Brook | Monash | 266 km (165 mi) | ||
B66 |
Riddoch Highway | Mount Gambier | Mount Schank | Port MacDonnell | 28 km (17 mi) | Continues north as along Riddoch Highway to Mount Gambier |
 B78 |
Wilkins Highway | Jamestown | Hallett | 38 km (24 mi) | ||
 B79 |
|
Warnertown | Ucolta | 104 km (65 mi) | ||
 B80 |
RM Williams Way | Hawker | Barinia | 220 km (137 mi) | ||
 B81 |
Thiele Highway | Gawler Belt | Morgan | 115 km (71 mi) | ||
 B82 |
Quorn | Giles Corner | 242 km (150 mi) | |||
 B83 |
|
Lyndhurst | Stirling North | 292 km (181 mi) | Much of this route still is designated  | |
 B84 |
|
Port Wakefield | Eudunda | 100 km (62 mi) | ||
 B85 |
Copper Coast Highway | Port Wakefield | Wallaroo | 58 km (36 mi) | ||
 B86 |
Yorke Highway | Port Arthur | Stenhouse Bay | 181 km (112 mi) | ||
 B88 |
St Vincent Highway | Pine Point | Warooka | 101 km (63 mi) | ||
 B89 |
Spencer Highway | Port Pirie | Minlaton | 199 km (124 mi) | [lower-roman 1] Note: Spencer Highway and route B89 differ between Alford and Moonta: B89 passes through Kadina, Spencer Highway through Wallaroo. | |
 B90 |
Tod Highway | Kyancutta | Uley | 176 km (109 mi) | ||
 B91 |
Birdseye Highway | Elliston | Cowell | 198 km (123 mi) | ||
 B97 |
|
Pimba | Olympic Dam | 89 km (55 mi) | ||
 B100 |
Ceduna | Lincoln Gap | 715 km (444 mi) | |||
 B101 |
Southern Ports Highway | Kingston SE | Millicent | 119 km (74 mi) | ||
 B160 |
Glenelg Highway | Glenburnie | SA/VIC Border | 15.3 km (10 mi) | A Victorian B route "extended" into SA, continues east as along Glenelg Highway into VIC eventually to Ballarat, Victoria | |
 B201 |
|
Barmera | Berri | Monash | 16.8 km (10 mi) | Former Sturt Highway alignment |
R Routes
South Australia is currently the only state in the country to use R routes, representing ring roads around nominated locations. To date, there is only one R route: around Adelaide, the state's capital city.
| Route | Component roads | From | Via | To | Length | Notes |
|---|---|---|---|---|---|---|
R1 |
|
Adelaide | North Adelaide | Adelaide | 16.9 km (11 mi) | Formerly allocated  on a slightly different route to the southwest, listed clockwise from the north-west corner of Adelaide city centre |
Other Routes
The South Australian government's Department of Planning, Transport and Infrastructure has not officially gazetted C routes in South Australia, however existing Victorian C routes terminating in South Australian locations close to the state border have been "extended" into South Australia; these are listed below.
| Route | Component roads | From | Via | To | Length | Notes |
|---|---|---|---|---|---|---|
 C192 |
Glenelg River Road | Mount Gambier | Wye | SA/VIC Border | 30 km (19 mi) | Continues east as along Glenelg River Road into VIC to Portland |
 C198 |
Casterton Road | Penola | SA/VIC Border | 17.4 km (11 mi) | Continues east as along Casterton-Penola Road into VIC to Casterton | |
 C212 |
Edenhope Road | Wrattonbully | SA/VIC Border | 13.3 km (8 mi) | Continues east as along Edenhope-Penola Road into VIC to Edenhope | |
 C240 |
Wimmera Highway | Naracoorte | SA/VIC Border | 23 km (14 mi) | Continues east as  along Wimmera Highway into VIC to Marong |
See also
- List of road routes in the Australian Capital Territory
- List of road routes in New South Wales
- List of road routes in the Northern Territory
- List of road routes in Queensland
- List of road routes in Tasmania
- List of road routes in Victoria
- List of road routes in Western Australia
- List of highways in South Australia
References
- "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.
- "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.
- 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 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 ...
- "Road Route Numbers (Trail Blazer)". Department of Planning, Transport and Infrastructure. 13 December 2017. Retrieved 30 March 2018.
- "Murray Mallee, Riverland" (PDF). Naming of State Rural Roads. Government of South Australia. 6 December 2013. Rack Plan 870. Archived from the original (PDF) on 26 May 2014. Retrieved 3 October 2014.
- Google (19 November 2013). "Driving directions – B89 South Australia" (Map). Google Maps. Google. Retrieved 19 November 2013.
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