Major construction at road surface will start in the south from January 2025. Early works will also continue along the broader alignment ahead of major construction starting later in the year.
The first tunnel boring machine (TBM) is scheduled to arrive in late 2025. With three TBMs now planned for the project, both southern and northern tunnels can be constructed concurrently - giving a reasonable expectation that the project can not only be completed by the stated 2031 deadline, but even earlier.
Activities are ramping up in early 2025 as we establish three key surface-level construction precincts (southern, central and northern) along the alignment. Construction activities will start in the southern precinct in January 2025. Construction will then begin in the central and northern precincts later in the year.
Dates indicative - may be subject to change
August 2024 – the consortium comprising John Holland, Bouygues Construction, Arcadis Australia, Jacobs and Ventia, was selected as the preferred alliance partner to deliver South Australia’s biggest-ever infrastructure project.
March 2024 – DIT released the Project Assessment Report (PAR) for community consultation across a five-week period.
November 2023 – DIT released the Urban Design Strategy for community consultation.
January 2023 – DIT commenced procurement via a Registration of Interest process for Stage One and Stage Two of the River Torrens to Darlington Project. The scope of works comprises the delivery of a 10.5-kilometre motorway and will be delivered using an Alliance contract.
December 2022 – the project design was further refined as part of the State Government’s Project Review and was released for public consultation.
November 2021 – released the T2D Reference Design.
November 2020 – commencement of the reference design phase.
November 2020 – the Department for Infrastructure and Transport (DIT) announced the preferred design will use a combination of tunnels, lowered and ground-level motorway, as well as overpasses and underpasses.