About the project

We are upgrading the dual lane roundabout at the Adelaide Road, Wellington Road, Flaxley Road and Alexandrina Road intersection in Mount Barker.

This upgrade will support nearby residential developments in the Mount Barker Urban Growth Area and the broader Mount Barker area.

Traffic volumes on these roads and the associated delays are expected to increase significantly because of development throughout the Mount Barker Urban Growth Area, particularly during peak periods.  This upgrade will cater for the increase in traffic and ensure safe and efficient access for all road users.

Works are underway and we expect to be completed in late 2026.

Fast facts

Status

Works underway

Location

Mount Barker.

Funding

$40 million funded by South Australian Government as part of the 2023-2024 State Budget.

What's happening

The upgrade will include:

• new dual lane roundabout at the intersection of Adelaide Road, Alexandrina Road, Wellington Road and Flaxley Road
• Adelaide Road and Flaxley Road will get new signalised pedestrian crossings
  
• relocation of the Wellington Road pedestrian crossing
  
• additional lanes
• more shared use paths
• road lighting improvements.

Following technical investigations and community feedback, we have refined the final design to include:

• new dedicated right turn access into the Mount Barker High School on Wellington Road
• modified alignment of the slip lane from Alexandrina Road onto Wellington Road to retain significant trees
• new shared use path linking the relocated Wellington Road button pedestrian crossing with the new pedestrian refuge on Alexandrina Road
• improvements to the Keith Stephenson Park car park.

Concept design

Community engagement

Insights from the local community and key stakeholders along with technical assessments have played a key role in informing the design for the upgrade at the intersection of Adelaide Road, Alexandrina Road, Wellington Road, and Flaxley Road in Mount Barker.

We are committed to working with the local schools and community to make sure the upgrade works are delivered smoothly and we continue to minimise any potential impacts.

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Contact

Engagement Team

• DIT.Engagement@sa.gov.au
• 1300 794 880