Augusta Highway

The Augusta Highway is the part of Australia's ring route (Highway 1) located in South Australia between Port Wakefield and Port Augusta. It was named Augusta Highway in 2011, and was formerly known simply as Highway One[2] and also as the Princes Highway, despite not being continuous to the Princes Highway in the southeast of the state.

Augusta Highway South Australia
Sign at the northern end of the Highway
South end North end
Coordinates	34.184°S 138.153°E / -34.184; 138.153 (South end) 32.48°S 137.75°E / -32.48; 137.75 (North end)
General information
Type	Highway
Length	211 km (131 mi)[1]
Gazetted	2011[2]
Route number(s)	A1 (2017-present)
Former route number	National Highway A1 (2011-2017)
Major junctions
South end	Port Wakefield Road Port Wakefield, South Australia
	Port Wakefield–Auburn Road Copper Coast Highway Goyder Highway Wilkins Highway Spencer Highway Main North Road Flinders Ranges Way Stuart Highway
North end	Eyre Highway Port Augusta, South Australia
Location(s)
Major settlements	Snowtown, Crystal Brook, Port Pirie, Port Germein
Highway system
Highways in Australia National Highway • Freeways in Australia Highways in South Australia

Following the 2018 South Australian state election, upgrades were announced for both ends of the Augusta Highway. At the northern end, the Joy Baluch AM Bridge across Spencer Gulf at Port Augusta is to be duplicated to improve safety for both local and highway traffic. At the southern end, the intersection with the Copper Coast Highway is to be grade-separated, along with duplicating Port Wakefield Highway through Port Wakefield. The contracts for detailed design and construction of both projects were let in March 2020 to the Port Wakefield to Port Augusta Alliance, a consortium of CPB Contractors, Aurecon and GHD Group. Both are expected to be completed in 2022.[3][4]