Majors Road Interchange
About the project
The Australian and South Australian Governments are jointly funding (50:50) the $120 million construction of new on/off ramps for the Southern Expressway at Majors Road. The project is expected to support approximately 245 jobs per year, averaged over the life of the construction period.
Majors Road is an important arterial road, providing a key connection between Lonsdale Road and Main South Road. Majors Road currently carries approximately 13,200 vehicles per day. The Southern Expressway carries approximately 74,000 vehicles per day between Darlington and the Reynella interchange and supports economic activity in Adelaide’s southern commercial and industrial areas, and facilitates tourist travel on the Fleurieu Peninsula.
The Majors Road Interchange Project will provide commuters in the southern suburbs further access to the Southern Expressway, whilst providing all commuters improved access to Glenthorne National Park - Ityamaiitpinna Yarta, Sam Willoughby International BMX Facility and Southern Soccer Facility from the Southern Expressway.
Final project completion is expected at the end of 2025.
Watch the fly-through video below to experience the artist's impression.
Concept design
Key changes to the design include:
- widening of Majors Road from the Southern Expressway to Lonsdale Highway / Ocean Boulevard to provide two through lanes in both directions;
- tree planting along the Shared Use Path next to Majors Road to improve amenity and achieve 50% shade coverage (upon maturity);
- putting the powerlines underground along this section of Majors Road; and
- realignment of the Patrick Jonker Veloway to improve the path orientation and sightlines.
Download the concept design.
Glenthorne National Park - Ityamaiitpinna Yarta
The concept design has been developed to include minimal impact to the Glenthorne National Park - Ityamaiitpinna Yarta. It also provides for no impact to significant vegetation and no impact to Glenthorne Farm. There is also no impact to the O’Halloran Hill Recreational Park.
Latest News
Project Update
Works continue to progress well at the new interchange. This project update provides an overview of key activities coming up, including a temporary closure of Majors Road (immediately east of Adams Road) in January 2025. Final project completion is expected at the end of 2025.
There will be no works on site between Friday 20 December 2024 and Monday 6 January 2025.
Majors Road, immediately east of Adams Road, will be temporarily closed between Monday 13 January and Friday 24 January 2025.This will allow us to safely undertake earthworks, pavement construction and asphalt works prior to switching traffic onto the new widened section of the Majors Road bridge. During this time, a temporary detour will be in place. Further information will be provided closer to the date.
Following the temporary road closure, Majors Road will be temporarily switched onto the new widened section of the Majors Road bridge with one lane of traffic maintained in each direction.
This switch is required to prepare for the start of earthworks on the northern side of Majors Road, between Sam Willoughby BMX facility and Glenthorne National Park–Ityamaiitpinna Yarta.
Click here for more information.
Bridge widening works
We are continuing bridge widening works on and underneath the bridge including the installation of safety barriers on the bridge.
To safely undertake these works, from Monday 11 November 2024 until mid-December 2024 additional speed and lane restrictions will be required on the Southern Expressway at night. Please plan ahead and expect some delays.
Emergency services access on the Southern Expressway and Majors Road will be maintained at all times during all works.
Community engagement
Engagement with the community will continue to be an important part of the project during the 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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- Frequently asked questions
Browse the range of frequently asked questions relating to the Majors Road Interchange.
More information
If you have any further enquiries or would like to register to receive project updates, please:
- subscribe to project updates
- email DIT.MajorsRoad@sa.gov.au
- telephone 1300 794 880