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The completion of the new Aldinga Bridge, which opened to traffic on Monday, 3 March 2025, marks a significant milestone for the duplication of Main South Road between Aldinga and Sellicks.
The Aldinga Bridge is a key feature of the new Aldinga Interchange, which realigns the junctions of Aldinga Beach Road and Aldinga Road to create a safer and more efficient connection. Traffic is now also travelling on parts of the newly constructed northbound carriageway on Main South Road.
As well as the Aldinga Interchange, the stage 2 Main South Road duplication includes intersection upgrades at Hart and Colville roads, Norman and Rogers roads, Hahn and Cox roads and Sellicks Beach Road, plus installation of wide centre medians and wire rope barriers to improve safety by separating northbound and southbound traffic.
It also includes three U-turns to facilitate local access and a shared use path for pedestrians and cyclists along the western side of Main South Road, from Aldinga to Sellicks Beach.
A priority for the project has been supporting local businesses, with 98 per cent of the work being undertaken by South Australian companies, and the project made up of a 99 percent South Australian workforce.
In all, 95 businesses, including a number of Indigenous-owned enterprises, have been awarded contracts to provide materials and services for stage 2 of the Main South Road duplication.
One such company is TW Civil, run by Seaford local Todd Williams. Todd started as a sole operator with a minor contract for stage one of the duplication.
His company has since been awarded a significant drainage contract for stage 2, which has seen his initial crew of five people grow to a team of 15, with his fleet of vehicles expanding from one ute to two excavators, two bob cats, a 12-tonne tipper, and several work utes.
Stage 2 of the Main South Road duplication project has also achieved a five per cent Aboriginal workforce to date, with a total of $7.7 million in packages of work awarded to Indigenous businesses, including Indigenous-owned business Ngurra, a civil and construction company based in metropolitan Adelaide.
Ngurra’s focus for Stage 2 is on delivering essential drainage solutions and completing minor structural works. Such collaborations have positive benefits beyond building a road, including fostering knowledge-sharing and skill development, benefiting both Indigenous and non-Indigenous teams.
Stage 2 of the Main South Road duplication between Aldinga Beach Road and Sellicks Beach is being delivered as part of the $810.4 million Fleurieu Connections project, funded by the South Australian and Australian governments.
The project is supporting 405 full-time equivalent jobs during construction, with full completion expected in 2026.
Temporary traffic signals will be in place for traffic at the new Main South Road, Aldinga Road and Aldinga Beach Road intersection from Monday 3 March. These temporary signals will ensure a safer and more predictable flow of traffic until the full interchange opens in 2026, when Main South Road traffic will be sent under the new bridge.
For more information, please visit www.fcalliance.com.au
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