South Road Superway

The South Road Superway project is the largest road infrastructure investment to date in the region, but it is also the most complex from an engineering perspective

Bridges & Viaducts
  • Adelaide, Australia
  • Bridges & Viaducts
  • Completed: 2014


Total investment


  • 4.8 km non-stop corridor;
  • 2.8 km elevated viaduct structure;
  • 100,000 sqm of deck;
  • 2,200 precast segments.


The South Road Superway is a 4.8 kilometre non-stop corridor, comprising of a 2.8 kilometre elevated viaduct structure, from the Port River Expressway to Regency Road located in the northern suburbs of Adelaide, SA. The viaduct structure consists of a dedicated dual carriageway constructed by the precast balanced cantilever method with cantilever and continuity PT tendons. Precast segments were erected by either Launching Gantry, Lifting Frames, or on Falsework using mobile crane.

Rizzani de Eccher, in joint venture with French company Freyssinet handled the design and construction of a portion of the project, which involved the construction of a viaduct with 2,200 precast segments, with a total 100,000 square meters of deck, including all support activities of prefabrication, stocking, transportation, and erection.

Companies involved

Rizzani de Eccher Deal

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