Two key road projects in South Australia have reached significant milestones over the past week.
The $120 million Majors Road Interchange Project has successfully seen the installation of 18 girders to widen the Majors Road Bridge, while piling works have commenced on the Aldinga Interchange project.
The girders installed at Majors Road range from 23-31 metres in length and weight between eight and 14 tonnes. They were all installed over a four-night period using a 300-tonne crane.
Alongside the increased bridge capacity, the Majors Road Project also involves the construction of new on and off-ramps for the Southern Expressway at Majors Road
Majors Road is a major arterial road in the southern suburbs of Adelaide, and the widening of the bridge from two to six lanes is a crucial component in future-proofing the road to carry the expected 14,700 vehicles per day by 2036.
Each girder on the bridge was constructed by South Australian company Bowhill Engineering, and transported almost 150 kilometres from their fabrication in Bowhill to the Majors Road site.
The Majors Road Interchange Project is currently expected to be completed by the end of 2025.
This stage of the Aldinga Interchange Project will consist of the installation of 53 piles that will provide vertical and horizontal support to the underpass and bridge structure.
The underpass will be made of up to 39,200 tonnes of asphalt to create 86,000 square metres of road pavement. Over 15.5 linear kilometres of soil nails will support the underpass walls.
The first permanent new asphalt section on Main South Road between Hart Road and Old Coach Road on the western side of the underpass is now open to traffic.
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