The Main South Road stage 2 duplication project is powering ahead, with one of South Australia’s largest cranes put to work on the new bridge at Aldinga.
The 700-tonne crane is approximately 45m tall, and this is the first time it has been used on a South Australian Government project. It has lifted 12 super-T beams into place to support the bridge which will form part of the new Aldinga Interchange.
The bridge deck will measure 26m long and 27m wide and will be supported by 53 concrete piles.
The deck will be complemented by 62 architectural panels and 86m of anti-throw screens to enhance both safety and the visual appeal of the bridge.
The bridge underpass will be made up of 39,200 tonnes of asphalt to create 86,000 square metres of road pavement, with more than 15.5 linear kilometres of soil nails supporting the underpass walls.
Work on the bridge and interchange started in June 2024.
The Aldinga Interchange realigns the junctions of Aldinga Beach Road and Aldinga 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.
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 Federal Governments.
The project is supporting 405 full-time equivalent jobs during construction.
The new bridge at Aldinga is expected to open to traffic in 2025, while the project is expected to be fully completed in 2026.
Federal Minister for Infrastructure, Transport, Regional Development and Local Government, Catherine King, said, “Having one of the largest cranes South Australia has ever seen now in action on the new Aldinga bridge site is a demonstration of just what’s possible when governments work together to deliver the major infrastructure projects people need and deserve.
“This project will have significant benefits for the many South Australians who travel through the area each day, ensuring they have safer and more reliable journeys.
“It is also supporting hundreds of full-time jobs during construction, providing a major economic boost for the area.”
South Australian Minister for Infrastructure and Transport, Tom Koutsantonis, said, “SA is building, and the Aldinga Interchange is the largest piece of infrastructure in the duplication of Main South Road from Aldinga to Sellicks Beach, so it’s only fitting that one of the largest cranes in the state is being used to build it.
“With the super-T beams now being installed, the bridge is really taking shape – with the next step the concrete pour of the bridge deck itself. Traffic has also now begun travelling on the new northbound on/off ramps on Main South Road at Aldinga Beach.
“Around 18,800 vehicles use this road every day, and the Aldinga Interchange will improve traffic flow and safety for residents and visitors traveling along this important road corridor.”
