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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.

Night works - Southern Expressway

We are continuing bridge widening works on and underneath the Majors Road bridge including the installation of throw screens and bridge safety railing.

To safely undertake these works, from Tuesday 7 January 2025 until Saturday 18 January 2025 additional speed, and lane restrictions will be required on the Southern Expressway at night.

Refer to the works notice for additional information.

Shutdown during holiday period

There will be no works on site between Friday 20 December 2024 and Monday 6 January 2025.

More information

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