River Torrens to Darlington (T2D) Project

The T2D Project is the final 10.5km section of the North-South Corridor, and will complete 78km of non-stop, traffic light-free motorway between Gawler and Old Noarlunga. Drivers will be able to bypass 21 sets of traffic lights between the River Torrens and Darlington as they travel through two separate tunnels, connected by an open motorway.

Learn about how we’re building the T2D project and view the latest construction activities.

About Project map Information sessions

Three easy ways to stay informed

The T2D project is South Australia’s biggest-ever road project, and we are committed to keeping you informed. There are three easy ways for you to stay up-to-date on the project and construction activities.

1

Register for updates

Get the latest construction notifications delivered to your inbox or letterbox. We typically update the community once per week, and we also provide quarterly progress updates.

2

View surface works

See the latest surface construction works, including site works, tunnel portal construction and road closures.

3

View the tunnel tool

See the location and depth of the tunnels along the project corridor.

Information sessions

Over the next few months, the T2D community engagement team will be visiting locations along the alignment to provide you with opportunities to speak with the team.

View events page

Latest news

Double down: SA's groundbreaking purchase

29 September 2024

Up to twice the number of tunnel boring machines previously anticipated will be delivered to South Australia for the landmark T2D Project, giving hope the state’s biggest ever infrastructure project can be completed even quicker.

Getting the North-South Corridor done

11 August 2024

The final stage of a long-awaited seamless North-South Corridor has reached a major milestone, with a preferred alliance partner being selected for the nation-shaping project.