The North-South Corridor will provide a dedicated non-stop thoroughfare for north and south bound traffic (including freight) running between Gawler and Old Noarlunga and passing through the Adelaide CBD, a distance of 78 kilometres (with 44 kilometres of motorway already complete).
Sections that have already been contracted and were funded through a deal between the SA and Federal Governments include:
- Southern Expressway ($407 million)
- Darlington Upgrade ($620 million)
- Torrens Road to River Torrens ($896 million)
- Regency Road to Pym Street ($354 million)
- South Road Superway ($842 million)
- Northern Connector ($867 million), and
- Northern Expressway ($564 million).
The Torrens to Darlington (T2D) section is yet to be procured. Estimated at $15.4 billion, this section is to be delivered in two stages:
- Stage One: ANZAC Highway to Darlington, and
- Stage Two: River Torrens to ANZAC Highway.
The T2D section would comprise 10.5 kilometres of motorway, including approximately seven kilometres of twin three-lane tunnels.
|Jan 2023||ROIs Open|
|2030||Expected Construction Completion|
|Jun 2021||The 2021-22 South Australia Budget revealed a change in scope and increase in cost for the Torrens to Darlington Section of the project. The scope was increased to include an additional lane and wider tunnels, raising the estimated total cost from $8.9 billion to $9.9 billion. The 2021-22 SA Budget allocated $3.3 billion over four years, including $151 million in FY2021-22.|
|Jul 2021||A project map revealing the southern entry and exit points of the tunnel was released.|
|Nov 2021||The SA Government released the Reference Design for the ANZAC Highway to Darlington and River Torrens to ANZAC Highway sections. The Designs confirm the two sections will include a combined 10.5 kilometres of motorway, comprising seven kilometres of tunnels. The River Torrens to ANZAC Highway section will include over two kilometres of twin three-lane tunnels.|
|Jan 2022||The SA Government opened Request for Tender (RFT) for the North-South Corridor Torrens to Darlington Operation, Maintenance and Systems Adviser role. Responses to RFTs close on 17 February 2022.|
|Mar 2022||The SA Government issued a Request for Tender for the Cost Estimating Services during the pre-procurement, procurement, and detailed design phases of the project, closing on 21 April.|
|Apr 2022||The SA Government issued a Request for Tender (RFT) for a Probity Auditor, closing 17 May.|
|Dec 2022||The SA Government announced that the Torrens to Darlington tunnels would be delivered sequentially, and provided a revised project cost.|
|Jan 2023||The SA Government released updated designs for the North South Corridor – River Torrens to Darlington project. The updated designs include two tunnels and has a revised total estimated cost of $15.4 billion.|
|Jan 2023||The South Australian Department for Infrastructure and Transport commenced a Registration of Interest process for Stage One and Stage Two of the Torrens to Darlington project, closing 7th March. The project will be delivered using an Alliance contract.|
Project Fact Sheet
Infrastructure funding profiles 2019-20