Grange Road, Holbrooks Road and East Avenue Intersection Upgrade
About the project
Construction of a new, four way intersection, will relieve congestion and improve safety and connectivity for all road users at this location.
Fast facts

Status
Contruction underway.

Location
Along Grange Road, Holbrooks Road and East Avenue.

Funding
$90 million, funded by the Australian and South Australian governments as part of the T2D Project.
What's happening
Works will include:
- realignment and widening of East Avenue with two through lanes onto Holbrooks Road, two dedicated right turn lanes onto Grange Road and a left turn slip lane onto Grange Road
- widening of Grange Road with dedicated left turn lane onto East Avenue, two through lanes onto Grange Road and two dedicated right turn lanes onto Holbrooks Road
- widening of Grange Road with one dedicated left turn lane onto Holbrooks Road, two through lanes on Grange Road and one dedicated right hand turn lane onto East Avenue
- widening of Holbrooks Road with two through lanes onto East Avenue, two dedicated right turn lanes onto Grange Road and left turn slip lane onto Grange Road.
Other proposed upgrades include:
- new and upgraded traffic signals, LED road lighting, line marking and drainage
- new asphalt, kerbing and gutters
- upgraded pedestrian crossings within the intersection
- installation of new dedicated bicycle lanes on all approaches
- new landscaping.
Fly-through video
Timeline
Early works
Site investigations, surveys.
Mid-2024.
Construction underway
Pedestrian actuated crossing.
October 2024.
Construction underway
Intersection upgrade
Started early 2025.
Open to traffic
December 2025.
Concept design
The concept design was updated following community feedback in late 2023.
Key changes to the concept design include:
- a dedicated left-turn lane from Grange Road onto Holbrooks Road, and
- a new Pedestrian Actuated Crossing (PAC) on Grange Road between Hallett Boulevard and Coombe Road.
Community engagement
Engagement with the community will continue to be an important part of the project during the planning and construction period. We look forward to keeping you well informed about the status of the project and minimising impacts as much as possible.
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