New bridge for SA’s Main South Road

A critical piece of infrastructure for the Main South Road Duplication is now in place, supported by 50 super-T concrete beams.

The 20 to 35-metre-long beams weighing between 38 and 64 tonnes each were poured by local contractor, Bianco Precast, and then transported to the site.

The South Australian concrete contractor has been around for almost 30 years and is known for its architectural and grey precast concrete panels as well as drainage and structural elements.

The new four-lane Pedler Creek Bridge at 161 metres-long and almost 24 metres wide is one of the largest bridges in the 9.8-kilometre Main South Road Duplication from Griffiths Drive in Seaford to Port Road in Aldinga.

Demolition of the old two-lane bridge will commence in the coming weeks and is expected to take eight weeks. On the Main Road South project 11.7 kilometres of road pavement has already been laid with almost 100,000 tonnes of asphalt and around 5600 metres of drainage installed.

Ninety-four per cent of earthworks are complete and nine kilometres of shared use path have been built. This has supported around 945 full-time construction jobs each year including up to 30 apprentices and trainees in a 99 per cent South Australian workforce, according to the SA Government.

Construction of stage one of the Main South Road Duplication project commenced early in 2022 and is expected to be completed next year. The main contractor is Fleurieu Connections Alliance.

Image source: SA Government

About the author

Desi Corbett

Desi is our weekly news journalist and the editor of Concrete in Australia magazine for 10 years. She has been heavily involved in all forms of engineering since 2013; part of a 30-year writing career across a range of subjects and media.