Mount Barker Interchange Upgrade Project

Mount Barker Interchange Upgrade Project.

The existing Mount Barker Interchange will be upgraded to include a new three-lane bridge across the South Eastern Freeway for northbound traf¿c, with the existing bridge converted to accommodate three lanes of southbound traffic and a new Shared Use Path. It will also include improved ramp capacity and new traffic signals to improve safety and reduce congestion. Mount Barker is currently a major growth area in the Adelaide Hills. The current Mount Barker Interchange is subject to significant congestion and queuing, with 43 crashes reported between 2019 and 2023. Upgrading this interchange will improve capacity, traffic efficiency and commuter safety in the area. These works are part of the South Eastern Freeway Interchanges upgrades. Construction at the Mount Barker Interchange started in late 2025. The interchange is expected to be open to traffic in late 2027. (T202608040012)

From: 2 Jul 2026, 5:18 am ACST