The Torrens to Darlington (T2D) project is the final stage of the city’s North-South Corridor, which, once complete in 2030, will deliver 78km of motorway between Gawler and Old Noarlunga.

The 10.5km T2D project will be delivered in two stages, with stage one, the Southern Tunnel, connecting Darlington to the Anzac Highway and stage two, the Airport Link and Northern Tunnel, connecting the River Torrens and Anzac Highway. The two tunnel sections will be joined by a lowered motorway.

Construction on the T2D scheme expected to start in late 2023 and be finished by late 2030.

The A$9.9bn North-South Corridor scheme is funded 50:50 by the federal and South Australia state governments.