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Augusta Highway Upgrades

The Augusta Highway Upgrades is delivering infrastructure upgrades along the 209km road section between Port Wakefield and Port Augusta, to improve safety, connectivity and freight efficiency, whilst importantly creating jobs.

Works include:

  • Duplication of the Augusta Highway from Port Wakefield to Lochiel;
  • Two new overtaking lanes between Lochiel and Redhill;
  • A new northbound overtaking lane just south of the Horrocks Pass Road and Augusta Highway junction;
  • Junction Upgrades between Redhill and Winninowie, including:
    • Augusta Highway and Horrocks Pass Road, at Winninowie;
    • Venning Road junction upgrade (south of Crystal Brook and north of Redhill on the Augusta Highway);
    • Clements Road junction upgrade (south of Crystal Brook and north of Redhill on the Augusta Highway);
    • Flinders View Drive junction upgrade (north of Crystal Brook and south of Port Germein);
  • Shoulder sealing; and
  • Pavement Rehabilitation.

These improvements are jointly funded by the Australian and South Australian Governments (80:20).

The funding programs include:

As part of the Augusta Highway Duplication Project, lighting installation was planned to start in August 2024 at the Nantawarra Road Intersection and the Port Wakefield Overpass. These works have been postponed until late 2025 and a further update will be provided closer to the time.

Current works

LocationScopeStart Date*Expected Completion Date (weather permitting)
Augusta Highway and Nantawarra Road Intersection
Lighting Installation at the intersection of Augusta Highway and Nantawarra Road
Planning Underway
Planning Underway
Between Lake View Road and Mallee Corner Road
Redhill southbound overtaking lane (delivered by PW2PA Alliance) July 2022 Visit PW2PA Alliance webpage
Between Lochiel and Redhill Augusta Highway Duplication (delivered by PW2PA Alliance) July 2022 Visit PW2PA Alliance webpage
Flinders View Drive and Augusta Highway Junction Junction upgrade: works include a new right turn lane and left turn lane into Flinders View Drive, installation of new lighting and line marking. August 2024

For the latest news please view the most recent works notice here
Horrocks Pass Road and Augusta Highway Junction Junction upgrade: works include improving the right turn lane from Horrocks Pass Road to Augusta Highway, extending the deceleration lanes for both left and right turns into Horrocks Pass Road, upgrades to existing lighting and installation of new lighting, and new line marking Planning UnderwayPlanning Underway
*Dates in the future are indicative 
Completed Projects

LocationScopeCompletion Date
Port Wakefield Overpass
Lighting installation under the Port Wakefield Overpass
October 2024
Clements Road and Augusta Highway Junction
Junction Upgrade: works include widening the left turn lane into Clements Road, installation of new lighting and line marking.
May 2024
Venning Road and Augusta Highway Junction Junction upgrade: works include widening the northbound right turn lane into Venning Road, installation of new lighting and line marking. November 2023
Lochiel southbound overtaking lane

New southbound overtaking lane between Maro Creek Road and Diagonal Road, north of Lochiel  

April 2023

Further Information

For more information or to register your interest please contact the project team: