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Arup, Mott MacDonald win contract for $247mn motorway project in South Australia

Arup and Mott MacDonald join consortium on major infrastructure project

The Morrison and Marshall Governments of South Australia have announced the successful tenderer for the major works contract on the $247mn, North-South Corridor, Regency Road to Pym Street Project.

A consortium of McConnell Dowell Constructors (Aust) Pty Ltd, Mott MacDonald Australia Pty Ltd and Arup Group Pty Ltd, will design and construct a new 1.8km motorway along South Road, connecting the South Road Superway to the Torrens to Torrens Project. 

Main construction works for the upgrade are expected to commence in late 2019, with completion expected in 2022. It’s anticipated that the project will support an average of 210 full time equivalent jobs per year, over its lifetime. 

Minister for Cities, Urban Infrastructure and Population Alan Tudge said that this project is the final missing link of the North-South Corridor between Gawler and the River Torrens. 

“When complete, will deliver efficient and reliable travel for up to 53,000 vehicles per day on this section of South Road, by removing the need to travel through two signalised intersections,” he said. 

The Federal Government has invested $3.7bn in infrastructure and transport across South Australia. 

“The Morrison Government is partnering with the Marshall Government to delvier congestion busting infrastructure upgrades right across Adelaide,” said Mr Tudge. 

Minister for Transport, Infrastructure and Local Government Stephan Knoll said this section of the North-South Corridor formed part of the $8.4bn infrastructure pipeline announce in the Marshall Government’s 2019-20 State Budget. 

“The Marshall and Morrison Governments are committed to keep building South Australia,” said Minister Knoll. 

‘We are building congestion busting infrastructure that will cut travel times, make our roads safer and also secure construction jobs into the future.” 


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The concept design includes: 

  • A 1.8km section of non-stop roadway, providing three lanes in each direction (at-grade); 
  • Two lanes in each direction on the South Road surface road, providing access to the surrounding community and local businesses; 
  • An overpass over Regency Road (three lanes in each direction). Two lanes in each direction (at-grade) on the surface roads underneath; 
  • Left in and left out only access at Pym Street; 
  • Full access to and from the non-stop motorway at Regency Road; 
  • Intersection upgrade at Regency Road; 
  • Improved cycling and pedestrian facilities; 
  • A grade separated pedestrian and cycle overpass over South Road in the vicinity of Pym Street; and, 
  • Landscaping and noise barriers. 

The Australian and South Australian Governments are jointly funding the project as part of their overall commitment to build a non-stop 78-kilometre North-South Corridor between Gawler and Old Noarlunga. 

McConnell Dowell Constructors (Aust) Pty Ltd, Mott MacDonald Australia Pty Ltd and Arup Group Pty Ltd, are currently working together on the delivery of the Oaklands Crossing Grade Separation Project and have previously been involved in the delivery of large-scale infrastructure projects in South Australia. 


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