News

Heysen Tunnels Maintenance Programme – Temporary Closures

27 April 2026

Adelaide-bound tunnel: Monday, 27 April 2026 – Saturday, 2 May 2026, and Monday, 11 May 2026 – Tuesday, 12 May 2026

Crafers-bound tunnel: Tuesday, 12 May 2026 – Saturday, 16 May 2026

This notice is to advise of upcoming tunnel closures and maintenance works on the Heysen Tunnels. These works are being undertaken by Downer on behalf of the Department for Infrastructure and Transport to ensure safe and efficient operation of the tunnels.

Works are scheduled to commence on Monday, 27 April with expected completion by Saturday, 16 May.

All works will be undertaken at night between the hours of 7pm and 5am. These night works are necessary to minimise the impact to motorists. Please note works are weather dependent and scheduling may be subject to change.

To safely facilitate these works, traffic control measures will be in place. Please plan ahead, allow extra travel time, and follow signage and direction of traffic management personnel. Follow the link below to see the planned traffic control measures.