• $75 million

The Heysen Tunnels refit and upgrade works include upgrading the monitoring, sensing and control technology for traffic management, lighting, safety treatments, and installation of a new fire suppression system.

The funding of $60 million in the 2021-22 State Budget is in addition to previously provided funding, bringing the total funding to $75 million.

The upgrade is jointly funded (on an 80:20 basis) by the Australian ($48 million) and South Australian ($12 million) governments.

Project start:
Expected completion:
Current status:

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Heysen Tunnels