Dukes Highway is a 190 kilometre highway corridor in South Australia which is part of the link between the Australian cities of Adelaide and Melbourne. It is part of the National Highway system spanning Australia, and is signed as route A8.
Riddoch Highway is a rural highway in south-eastern South Australia, designated as route A66 between Keith and Mount Gambier, with the remainder between Mount Gambier and Port MacDonnell designated as route B66. It is named after John Riddoch, the first white settler landholder and vigneron in Coonawarra.
Mallee Highway is a highway in south-eastern South Australia and north-western Victoria, running mostly across the Mallee plains. It forms part of the shortest route between Adelaide and Sydney.
Lincoln Highway is a highway in South Australia which links the cities of Port Augusta and Port Lincoln located on the east coast of Eyre Peninsula over a distance of 315 kilometres. Lincoln Highway - along with Flinders Highway - presents an alternative but somewhat longer coastal route between Ceduna and Port Augusta, compared to the more direct route along Eyre Highway.
Flinders Highway connects the South Australian towns of Ceduna and Port Lincoln, a distance of 396 kilometres (246 mi), and is currently signed as B100. Flinders Highway - along with Lincoln Highway - presents an alternative but somewhat longer coastal route between Ceduna and Port Augusta, compared to the more direct route along Eyre Highway.
Tod Highway is an important 177 kilometre highway serving South Australia's Eyre Peninsula's wheatbelt, and is designated route B90. It is named after Robert Tod who explored the area in 1839.
Pinnaroo is a town in the Murray Mallee region of South Australia, near the border with Victoria, 243 km east of Adelaide. Pinnaroo is on the north side of the Mallee Highway, and on the railway line between Tailem Bend and Ouyen. The roadhouse on the highway at Pinnaroo is the first "food and leg-stretch" stop on the bus route from Adelaide to Sydney. At the 2016 census, the locality of Pinnaroo had a population of 712 of which 547 lived in and around its town centre.
Lameroo is a town in the Murray Mallee region of South Australia. It is on the Mallee Highway and Pinnaroo railway line about 40 km west of the Victorian border, or 210 km east of Adelaide. It is primarily a service town for the surrounding rural areas, growing grain and sheep. Lameroo now includes the former settlements of Kulkami, Mulpata, Wirha and Gurrai, which were on the Peebinga railway line, and Wilkawatt, which was between Parrakie and Lameroo on the Pinnaroo railway.
Glenelg Highway is a rural highway in south-eastern Australia, linking Mount Gambier with Ballarat. Most of the highway is located within the Western part of the state of Victoria; except for a short, 15 km stretch from the South Australia/Victoria state border near Ardno to Glenburnie is located in South Australia. Some maps identify the South Australian stretch as Casterton Road. Major towns along its route include Casterton, Coleraine and Hamilton.
Ngarkat Conservation Park is a protected area located in South Australia's south-eastern corner about 200 kilometres south east of the Adelaide city centre.
Wimmera Highway is a 345 kilometre highway that connects the towns of Marong, Victoria and Naracoorte, South Australia, through the major junctions of Sunraysia Highway, Henty Highway and Western Highway.
Strathalbyn Road is a South Australian road connecting the towns of Aldgate, Mylor, Echunga, Macclesfield and Strathalbyn, designated part of route B33.
Wellington Road is a South Australian secondary road, connecting Mount Barker with the towns of Wistow, Highland Valley, Woodchester and Langhorne Creek. Its north-western portion has been designated part of route B37.
Goyder Highway (B64) is a west–east link through the Mid North region of South Australia connecting Spencer Gulf to the Riverland. It is part of the most direct road route from Port Augusta to much of Victoria and southern New South Wales.
RM Williams Way is a road through the Yorke and Mid North region of South Australia connecting Clare in the south through Spalding, Jamestown and Orroroo to Hawker in the Flinders Ranges. The road was named after R. M. Williams who had a strong association with the countryside through which it runs.
Flinders Ranges Way is the main road route through the Flinders Ranges in South Australia. It starts from the Augusta Highway at Stirling North, 6 km southeast of Port Augusta. The Flinders Ranges Way extends 209 km to Blinman. Route B83 follows the Flinders Ranges Way through Quorn to Hawker, but then branches onto The Outback Highway along the western side of the ranges through Leigh Creek to Lyndhurst.
St Vincent Highway is a major road on the southern part of Yorke Peninsula in South Australia. It diverges from Yorke Highway to continue south along the coast of Gulf St Vincent near Pine Point. It passes inland of Port Vincent, Stansbury, Wool Bay and Port Giles then passes through Coobowie and Edithburgh. From here, the St Vincent Highway turns northwest to Yorketown and west to Warooka where it rejoins Yorke Highway.
Browns Well Highway is a road connecting Loxton, South Australia through the Murray Mallee to Pinnaroo in South Australia. It was named in 2008 after the Browns Well district for areas traversed by the highway.
The Outback Highway is the road from Hawker along the western side of the Flinders Ranges through Leigh Creek to Marree. It is designated as part of route B83 from Hawker to Lyndhurst. Route B83 continues south from Hawker along the Flinders Ranges Way.
B57 (1998–present)
Mallee Highway 
Dukes Highway 
