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South Eastern Freeway Interchanges

The Australian and South Australian governments have committed $150 million (80:20) to upgrade the Mount Barker and Verdun interchanges.

The project aims to improve connectivity to the South Eastern Freeway and improve the capacity of the interchanges in response to existing and projected growth for Mount Barker and the Adelaide Hills area.

The project is expected to support approximately 260 full-time equivalent jobs per year over the construction period.

Major construction is planned to start in late 2025.

Project Locality Map

Key project benefits

We are upgrading the Verdun and Mount Barker interchanges to create better connections between Adelaide Hills and the freeway, supporting population growth.

Localised benefits include:

  • smoother and safer journeys;
  • improved safety for all road users;
  • better access for cyclists and pedestrians;
  • improved response for emergency services;
  • preserving the character of the Adelaide Hills; and
  • boosting South Australia’s economy, supporting 260 jobs per annum over the construction period.