Fleurieu Connections - Main South Road Duplication Project – Stage 2

Fleurieu Connections - Main South Road Duplication Project – Stage 2

We're delivering a fully duplicated Main South Road between Aldinga to Sellicks Beach, improving safety and making your journey more reliable.

Safer access onto and across Main South Road.
Better connections to the iconic Fleurieu Peninsula.
Unlocking housing opportunities in the South.

Fast facts

Status

Open to Traffic

Location

Aldinga to Sellicks Beach.

Jobs supported

Supporting over 400 jobs each year.

Funding

$810.4 million from the South Australian and Australian governments.

About the project

The Fleurieu Connections Alliance is delivering stage 2 of the duplication of Main South Road. The alliance includes CPB Contractors, Aurecon and GHD, with Sub-Alliance partners McMahon Services Australia and Tonkin, in association with the Department for Infrastructure and Transport.

This project will: 

  • result in safer and faster journeys for motorists
  • be a boost for local tourism, communities
  • create hundreds of jobs each year during construction.

What's happening

Stage 2 of the Main South Road Duplication project opened to traffic in its final road configuration in February 2026

All lanes, intersections, ramps, and the new underpass are now operational and functioning as designed. While major works are now complete, finishing works such as landscaping and minor detailing will continue over the coming months.

Remaining works will involve intermittent activity near the road corridor. Temporary traffic controls may be required at times.

Stage 2 Concept Fly-Through

Watch the fly-through video to experience the artist's impression of the Main South Road duplication
Less than 4 minutes

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Contact

Fleurieu Connections Alliance