• 370 (per year)
    Jobs created
  • $754.5 million

The Darlington Upgrade Project was an important stage in the delivery of Adelaide’s North-South Corridor, delivering a 3.3km upgrade of Main South Road, including:

  • A non-stop motorway between the Southern Expressway and north of Tonsley Boulevard.
  • A  non-stop motorway passing underneath Flinders Drive, Sturt Road, Sutton Road/Mimosa Terrace, Ayliffes Road bridge and Tonsley Boulevard.
  • Grade separation of the Main South Road/Ayliffes Road/Shepherds Hill Road intersection.
  • Main South Road (at grade) surface roads along both sides of the lowered motorway to provide connections to Flinders Drive, Sturt Road, Tonsely Boulevard and most local roads.
  • Full free flow interchange at the Southern Expressway/Main South Road with dedicated ramps providing direct access to, and from, the new motorway and Main South Road.
  • A two-lane overpass for northbound traffic travelling east on to Ayliffes Road.

The $754.5 million project was funded by the Australian and South Australian Governments, and opened to traffic mid-2020.

The lead contractors for this project were: Laing O'Rourke and Fulton Hogan.

Project start:
Expected completion:
Mid 2020 (open to traffic)
Current status: