- A five-firm consortium will deliver Adelaide’s largest infrastructure project.
- The $15.4 billion North-South Corridor includes a 10.5km tunnel section.
- The project aims to create 5,500 jobs annually and improve travel efficiency.
South Australia has selected a consortium of Bouygues Construction, Jacobs, Arcadis Australia, Ventia, and John Holland to complete the North-South Corridor scheme.
This $15.4 billion initiative, the state’s largest infrastructure project, will expand 78km of motorway and feature a new 10.5km tunnel section.
Adelaide’s North-South Corridor: Major Infrastructure Upgrade Underway
The remaining segment, known as T2D, will involve constructing twin tunnels to bypass 21 traffic lights in Adelaide. The introduction of a third tunnel boring machine (TBM) is expected to accelerate construction, with work on the TBMs planned for late 2026. The project is set to enhance local transport and unlock new opportunities for tourism.
The project’s final stage, known as the River Torrens to Darlington (T2D) section, will include a 10.5km tunnel designed to bypass 21 traffic lights. The addition of a third tunnel boring machine (TBM) will enable simultaneous construction of the twin tunnels, potentially accelerating the project’s timeline.
With principal construction slated to start in 2025 and TBM work planned for late 2026, the project is expected to create around 5,500 jobs annually until completion. The improved infrastructure will significantly cut travel time between West Hindmarsh and Darlington, transforming regional transport and boosting tourism prospects.
South Australian officials anticipate that the North-South Corridor will enhance local travel efficiency and support economic growth through job creation and improved connectivity. The project represents a significant investment in the region’s infrastructure, promising long-term benefits for both residents and visitors.
The North-South Corridor project marks a major leap in South Australia’s infrastructure development, promising to enhance regional connectivity and create thousands of jobs. Its successful completion will revolutionize travel in Adelaide and foster economic growth.
“For decades, South Australians have waited for a non-stop trip from north to south through Adelaide [and], finally, we are getting it done,” said Premier Peter Malinauskas.
