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Darlington Upgrade Project. South Australia. Australia

Client
Department of Planning, Transport and Infrastructure
Sector
Transport
Services
Engineering ExpertiseInfrastructure Construction
Value
$620 million
Duration
2016 - 2018
Project partners
Fulton Hogan

Darlington Upgrade Project. South Australia. Australia

Darlington Upgrade Project. South Australia. Australia

Darlington Upgrade Project. South Australia. Australia

Darlington Upgrade Project. South Australia. Australia

Darlington Upgrade Project. South Australia. Australia

Full project details

The Darlington Upgrade Project is another important stage in the delivery of Adelaide’s North-South Corridor and will deliver an upgrade of approximately 3.3 kilometres of the existing Main South Road. 

On behalf of the Australian and South Australian Governments, Gateway South, a Joint Venture between Laing O’Rourke and Fulton Hogan, is improving the connectivity between Flinders University and Tonsley precincts by constructing a non-stop motorway between the Southern Expressway and Tonsley Boulevard, passing underneath Flinders Drive, Sturt Road, Sutton Road/Mimosa Terrace and Tonsley Boulevard.

The $620 million project is jointly funded by the Australian and State Governments. Laing O’Rourke in Joint Venture with Fulton Hogan, is delivering the Darlington Upgrade Project, a 3.3 kilometre road link between the Southern Expressway and Tonsley Boulevard in Adelaide, South Australia. When complete, the project will provide major benefits to commuters, business and the SA economy.

The project will deliver:

  • A non-stop motorway between the Southern Expressway and Tonsley boulevard, passing underneath Flinders Drive, Sturt Road, Sutton Road/Mimosa Terrace and Tonsley Boulevard.
  • Grade separation of the Main South Road/Ayliffes Road/Shepherds Hill Road intersection.
  • Main South Road (at grade) service roads along both sides of the lowered motorway to provide connections to Flinders Drive, Sturt Road and most local roads.
  • Full free flow interchange at the Southern Expressway/Main South Road with dedicated ramps providing direct access to the new motorway and Main South Road.

Innovative traffic management

The section of Main South Road between the Southern Expressway and the Ayliffes Road/Shepherds Hill Road intersection is Adelaide’s busiest section of road, carrying approximately 73 000 vehicles per day.

The Main South Road/Sturt Road intersection is one the busiest intersection in South Australia, with approximately 98 000 vehicles travelling through it each day.

To manage this, an innovative and collaborative approach to traffic management has been adapted through an early iterative design and constructability review process. 

Project facts

The upgrade will provide efficient connections between key hubs across Adelaide including the Port, Airport, industrial and educational areas.

A 3.3 kilometre section of motorway and eight bridges will be constructed to provide a non-stop commute between the Southern Expressway and Tonsley Boulevard.

Five existing intersections will be grade separated, four of which are in the top ten busiest intersections in South Australia.

Local precincts will be better connected by new two-way cycling paths and dedicated footpaths along both sides of the corridor.