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Highway 1 South Australia
Map of South Australia with Highway 1 highlighted in red
General information
Type	Highway
Length	1,715 km (1,066 mi)
Opened	1955
Route number(s)	A1 (SA/VIC border to Mount Gambier) B1 (Mount Gambier to Tailem Bend) A1 (Tailem Bend to Murray Bridge) M1 (Murray Bridge to Glen Osmond) A1 (Glen Osmond to Dulwich) R1 (Dulwich to Medindie) A1 (Medindie to Eucla)
Major junctions
SA/VIC border end	near Mount Gambier
	Riddoch Highway Dukes Highway Portrush Road Salisbury Highway Northern Expressway Stuart Highway Lincoln Highway Tod Highway Flinders Highway
SA/WA border end	near Eucla
Location(s)
Major settlements	Millicent, Kingston SE, Murray Bridge, Mount Barker, Adelaide, Port Wakefield, Port Augusta, Ceduna
Highway system
Highways in Australia National Highway • Freeways in Australia Highways in South Australia

In South Australia, Highway 1 is a 1,715-kilometre (1,066 mi) long 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 M1, A1, B1 or R1, depending on the state route numbering system. In South Australia, most of the highway is designated as route A1, with multi-lane, dual-carriage-way sections generally designated route M1, and the alignment around the Adelaide CBD designated route R1. South-east of Tailem Bend, it is designated route B1.

History

This section needs expansion with: SA specific history. You can help by adding to it. (March 2013)

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. It was meant to be a National Route between the Victorian Border near Mt. Gambier and Adelaide. In 1958, it was extended northward from Adelaide to Port Augusta, and westward, toward the Eyre/Lincoln highway junction. The Eyre Highway, the Port Wakefield-Port Augusta Road, Port Wakefield Road, and the South Eastern Freeway were declared National Highways in November 1974. Since, the route has remained static.

Route description

In South Australia, the highway connects:

• from the SA/VIC border
  • via Princes Highway to
• Mount Gambier
  • via Princes Highway to
• Tailem Bend
  • via Princes Highway to
• Murray Bridge
  • via South Eastern Freeway to
• Glen Osmond
  • via Glen Osmond and Fullarton Roads to
• Dulwich, on the eastern edge of the Adelaide city centre
  • via City Ring Route to
• Medindie, on the northern edge of North Adelaide
  • via Main North Road to
• Gepps Cross
  • via Port Wakefield Road and Port Wakefield Highway to
• Port Wakefield
  • via Augusta Highway to
• Port Augusta
  • via Eyre Highway to
• Eucla

Major intersections

• Riddoch Highway (A66/B66)
• Dukes Highway (A8)
• Portrush Road (A17)
• Salisbury Highway (A9)
• Northern Expressway (M2)
• Stuart Highway (A87)
• Lincoln Highway (B100)
• Tod Highway (B90)
• Flinders Highway (B100)

References

1. ^ "Highway 1, South Australia" (Map). Google Maps. Retrieved 1 August 2022.
2. Taylor, David (2012). The Highway One travel companion. Volume 1, Melbourne to Tweed Heads. Salisbury, Queensland: Boolarong Press. p. 9. ISBN 9780987218902. Archived from the original on 6 October 2016. Retrieved 19 March 2013.
3. "Ozroads: Highway One (SA)". www.ozroads.com.au. Retrieved 17 December 2023.

See also

• Highway 1 (New South Wales)
• Highway 1 (Northern Territory)
• Highway 1 (Queensland)
• Highway 1 (Tasmania)
• Highway 1 (Victoria)
• Highway 1 (Western Australia)

v t e Road infrastructure in South Australia
Expressways	South Eastern Freeway Port River Expressway Northern Expressway North–South Motorway (incomplete, under construction) Southern Expressway
Interstate highways	Barrier Highway Dukes Highway Eyre Highway Mallee Highway Princes Highway Stuart Highway Sturt Highway
State highways	Augusta Highway Gawler Bypass Horrocks Highway Main South Road Port Wakefield Highway Riddoch Highway Victor Harbor Road
Arterial roads	Adelaide–Mannum Road Alexandrina Road Barossa Valley Way Birdseye Highway Browns Well Highway Cameron Highway Copper Coast Highway Flinders Highway Flinders Ranges Way Glenelg Highway Gorge Road Goyder Highway Horrocks Highway Karoonda Highway Lincoln Highway Ngarkat Highway Olympic Dam Highway Onkaparinga Valley Road Playford Highway RM Williams Way Southern Ports Highway Spencer Highway St Vincent Highway Stott Highway Strathalbyn Road The Outback Highway Thiele Highway Tod Highway Wellington Road Wilkins Highway Wilmington–Ucolta Road Wimmera Highway Yorke Highway
Outback tracks	Anne Beadell Highway Birdsville Track Colson Track Gunbarrel Highway Maralinga to Emu Road Mount Davies Road Oodnadatta Track Strzelecki Track Vokes Hill Corner to Cook Road
Transport in South Australia; List of road routes in South Australia

v t e Road infrastructure in Adelaide
Freeways	South Eastern Freeway North–South Corridor Northern Expressway North–South Motorway (in progress) Southern Expressway Port River Expressway
Highways and major roads	Anzac Highway Adelaide–Mannum Road (North East Road) Gawler Bypass Glen Osmond Road Grand Junction Road Main North Road Main South Road Mount Barker Road Port Road Port Wakefield Road Portrush/Lower Portrush/Ascot/Taunton/Hampstead Roads Salisbury Highway Sir Donald Bradman Drive South Road Victor Harbor Road
Arterials and other roads	Churchill Road City Ring Route Cross Road Daws Road Elder Smith Road Flagstaff Road Fullarton Road Goodwood Road Grange Road Greenhill Road Henley Beach Road Kensington Road McIntyre/King Roads Magill Road Marion Road Melbourne Street Montacute Road Montague Road O'Connell Street Panalatinga Road Payneham/Lower North East Roads Philip Highway Prospect Road Regency/Muller Roads Tapleys Hill/Brighton/Ocean/Lonsdale/Dyson/Murray Roads The Parade Torrens Road Unley Road Victoria Road
City streets	Angas Street East Terrace Carrington Street Currie Street Flinders Street Franklin Street Gawler Place Gilbert Street Gilles Street Gouger Street Grenfell Street Grote Street Halifax Street Hindley Street Jeffcott Street King William Street Morphett Street North Terrace Pirie Street Pulteney Street Rundle Mall Rundle Street South Terrace Sturt Street Wakefield Street Waymouth Street West Terrace Wright Street
Transport in Adelaide; List of numbered roads in Adelaide

• 1955 establishments in Australia
• Highways in South Australia
• Highway 1 (Australia)