Welcome to the River Torrens to Darlington Project
Part of Adelaide's North-South Corridor
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 as they travel through two separate tunnels, connected by an open motorway.
A preferred Alliance partner has been selected to deliver this important project, a consortium comprising John Holland, Bouygues Construction, Arcadis Australia, Jacobs and Ventia. These companies individually have an extensive track record of successfully delivering major tunnelling and infrastructure projects around the country and internationally.
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Watch: An introduction to the T2D Project
Engagement events
To see upcoming events, visit our What's on page.
Explore the project
Latest news
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Groundbreaking purchase made in GermanyThe South Australian Government and the T2D Alliance have signed the contract to purchase three tunnel boring machines (TBMs) from world-leading manufacturer Herrenknecht and revealed plans for two smaller TBMs also to come to excavate between the main tunnels.
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Northern section of South Road fit for long termRoad users will be able to enjoy a smoother and safer ride on a northern stretch of South Road, following the completion of resurfacing works between James Congdon Drive, Mile End South and Ashwin Parade, Thebarton.
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Construction underway at Manton Street and Adam Street junctionMajor works have commenced to install a second left turn lane from Manton Street into Adam Street, Hindmarsh.
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Getting the North-South Corridor doneThe largest and most complex infrastructure project in South Australian history has reached a major milestone, with a preferred alliance partner being selected for the nation-shaping project.
*Images displayed on this page are artist's impressions.