Redcliffe Road (Anzac Avenue), Gympie Road and Dayboro Road (Petrie), improve intersection

The Petrie roundabout, a major intersection providing an important connection between the suburbs of Moreton Bay region and wider transport networks, has been upgraded.

The roundabout experienced high congestion during morning and afternoon peak periods, causing significant queuing and travel delays.

Traffic demands for this intersection are growing, with significant regional and local developments such as the University of Sunshine Coast campus and ‘The Mill at Moreton Bay’, accelerating the need for greater road capacity.

The upgrade installed a signalised T-intersection with wider approaches to help ease congestion, reduce travel time for motorists and improve safety for all road users. It also improves connectivity between key employment, industrial, educational and residential areas in the Moreton Bay region.


  • Improves safety
  • Improves network efficiency
  • Reduces peak hour congestion
  • Reduces travel time
  • Better active transport
  • Contributes to economy

Key features

  • Replaced the roundabout with a signalised T-intersection.
  • Widened Anzac Avenue and Gympie Road on approach to the intersection.
  • Provided 2 signalised right-turn lanes from Anzac Avenue to Dayboro Road.
  • Installed a left-turn slip lane from Dayboro Road to Anzac Avenue.
  • Provided 2 signalised right-turn lanes from Dayboro Road to Gympie Road.
  • Installed a left-turn slip lane from Gympie Road to Dayboro Road.
  • Provided a signalised U-turn facility on Gympie Road for local access to Mill Street.
  • Provided access to Young Street via a U-turn for motorists travelling south on Anzac Avenue.
  • Improved pedestrian and bike-riding facilities, including on-road bike lanes, shared footpaths and signalised crossings.
  • Removed the right-turn from Dayboro Road to River Street to improve traffic flow.
  • Relocated the northbound bus stop on Anzac Avenue to north of the Young Street intersection.
  • Changed access at Whites Road to become left-in and left-out only.


This project was fully funded by the Queensland Government. Investment ID 489308

Total investment
$30 million
Queensland Government
$30 million

Current status

Construction was completed in March 2022.  

Petrie intersection during construction

4 images of Petrie Round about showing the different stages of construction

Petrie intersection upgrade map: design layout

Petrie intersection upgrade map design layout