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Princes Highway Upgrades
The Department for Infrastructure and Transport (the Department) is delivering infrastructure upgrades on the Princes Highway Corridor, from Meningie to the South Australian/Victorian border. The project forms part of the $190 million Princes Highway Corridor Upgrade program which is jointly funded by the Australian and South Australian governments (80:20).
These works will support South Australia's regional economic growth, improve access for high productivity freight movements, provide upgrades to regional road networks for improved accessibility and community connectivity, enhance opportunities for regional tourism in South Australia and improve long term safety and efficiency for all road users.
From July 2024 finishing works including kerbing works and line marking will be undertaken between O’Leary Road and Penola Road, Mount Gambier. Short -term speed restrictions will be required while these works are undertaken. Works are expected to be fully completed by mid-2024.
We appreciate that works within Mount Gambier have been ongoing for an extended period of time while we undertake these important upgrades. We have experienced a number of program impacts, including inclement weather, throughout the upgrades. We would like to thank you for your patience and understanding while these critical upgrade works are undertaken.
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Current Works on Princes Highway
| Location | Scope | Start Date* | Expected Completion Date (weather permitting) |
|---|---|---|---|
Princes Highway / The Springs Road/ Burrungule Road Intersection | Intersection Upgrade | August 2023 | October 2024 |
Approximately 15kms north west of Mount Gambier | Extension of existing overtaking lanes, eastbound and westbound | August 2023 | July 2024 |
Approximately 9kms north west of Mount Gambier | Extension of existing overtaking lane eastbound | August 2023 | July 2024 |
Four roundabouts within the township of Mount Gambier on Jubilee Highway West (Princes Highway) at
| Roundabout upgrades | August 2023 | July 2024 |
| Jubilee Highway West between Suttontown Road and Wehl Street North and between Wehl Street North to Penola Road | Pavement rehabilitation | August 2023 | July 2024 |
| Approximately 12kms south east of Mount Gambier | New eastbound and westbound overtaking lanes | September 2023 | July 2024 |
Completed Works on Princes Highway
| Location | Scope |
|---|---|
Approximately 12kms south of Meningie | New northbound and southbound overtaking lanes |
Princes Highway / Furner Road Junction | Junction Upgrade |
| Along the Princes Highway between Kingston SE and the South Australian/Victorian border | Audio Tactile Line Marking |
| Princes Highway / Walkers Tin Hut Road Junction | Junction Upgrade |
| Approximately 7kms north of Millicent | New northbound and southbound overtaking lanes |
Approximately 13kms south east of Millicent | Extension of existing overtaking lanes, westbound and eastbound |
Approximately 16kms south east of Millicent, opposite Tantanoola Roadhouse | Upgrade of existing rest area |
Culvert Upgrades on Princes Highway
As part of the South Australian Regional Bridge Upgrades, two culverts on the Princes Highway have been upgraded. These include:
- Reedy Creek - culvert over Drain L located on Princes Highway, approximately 40 kilometers south-east of Kingston. Works will replace and widen the existing culvert and upgrade the safety barriers.
- Thornlea - culvert over the stormwater crossing located on Princes Highway, approximately 23 kilometers north-west of Millicent. Works will replace and widen the existing culvert and upgrade the safety barriers.
For more information on these works, please visit the South Australian Regional Bridge Upgrades project page
Further information
If you have any questions or would like to speak to a member of the project team, please call 1300 794 880, email DIT.Engagement@sa.gov.au or subscribe to receive project updates.