Carnarvon Highway Intersection Upgrades

The Roads of Strategic Importance (ROSI) initiative will deliver targeted upgrades to the Carnarvon Highway and surrounding roads.

The Carnarvon Highway intersections with the Castlereagh Highway and Salmon Road are being upgraded as part of the Townsville to Roma Corridor Upgrade. Works will include improved intersection turn treatments and improvements to the approaches to the Carnarvon Highway.


  • Improves safety
  • Improves network efficiency
  • Contributes to economy
  • Contributes to regional growth

Key features

  • Improved intersection turn treatments.
  • Improvements to the approaches to the Carnarvon Highway.


These projects are jointly funded by the Australian and Queensland governments on an 80:20 basis.

Total investment
$8.2 million
Australian Government
$6.56 million
Queensland Government
$1.64 million

Current status

Construction at both intersections started on 27 January 2021. It is expected that construction will be completed by June 2021, weather and conditions permitting.

Carnarvon Highway (Mungindi - St George) and Castlereagh Highway intersection map
 Carnarvon Highway Intersection Carnarvon Castlereagh map
Carnarvon Highway (St George - Surat) and Salmon Road intersection map

Carnarvon Highway Intersection Carnarvon Salmon