Roads in the McLaren Vale region are set to become safer for visitors and locals alike, with safety improvements being considered for 21 intersections.

As part of the McLaren Vale Road Safety Project we have now installed new enhanced warning signage at 14 of the 21 intersections. This also includes improved line marking, updated corner treatments and guide post enhancements.

Thank you to everyone who provided feedback on the concept plans.

Follow the links below to view the concept plans for each of the 14 intersections.



6 - Plains Rd (Hahn Rd)

8 - Almond Grove Rd (Colville Rd)

9 - Colville Rd (Delabole Rd)

10 - Main Rd (Little/Gaffney Rd)

12 - Communication Rd (California Rd)

13 - Olivers Rd (Warners/Osborn Rd)

14 - Johnston Rd (Aldersey St/Gilbert Rd)

15 - Tatachilla Rd (California Rd)

16 - McLaren Flat Rd (Bagshaws/Hamilton Rd)

17 - Tatachilla Rd (Caffrey St/Bellevue Dr)

18 - Aldinga Rd (Pethick/Delabole Rd)

19 - McLaren Flat Rd (Sand/Glory Rd)

20 - McMurtrie Rd (Strout Rd)

21 - Sand Rd (Hunt Rd)

The remaining seven intersections have alternative road safety treatments and are anticipated to be upgraded by June 2024. Follow the link to view a map of the full 21 Intersections.


The State Government is working collaboratively with the City of Onkaparinga to review the proposed treatments following Council’s 2021 intersection audit and advocacy efforts, and subsequent $4.2 million State Government election commitment from Member for Mawson, Leon Bignell.

The locations, proposed treatments and project timing were identified during the audit and may use innovative solutions to reduce the potential for crashes.

Follow the links to view information on the treatments being considered:

Both the Department for Infrastructure and Transport (DIT) and the City of Onkaparinga have individual and shared responsibility for roads in the area, with the DIT responsible for roads such as Main and Aldinga Roads, while council is responsible for adjoining local roads.

All upgrades are anticipated to be completed by June 2024.

The locations, proposed treatments and project timing have been identified via a detailed review of each individual site conducted by technical staff from DIT and council. In March we sought local knowledge on the area to improve the selected treatments. Thank you to everyone that provided feedback.