An early works program is underway on the T2D Project. This work includes utility service relocations, ground investigations and surveying. We will notify nearby local residents and businesses in advance of any activities that are planned for their area and work to keep disruption to a minimum.

Detours, signage and traffic controllers will be in place to manage traffic flow and ensure motorists, cyclists and pedestrians are able to safely navigate around our work areas.

For the latest information on early works in your area, visit Works in Your Area.

Service relocations

The project has commenced relocating utility services like power, water, gas, wastewater and telecommunications to enable the construction of the T2D Project.

Service relocation works have begun at the southern end of the project with new utility services having been installed in side streets to allow existing utility services in South Road to be decommissioned. These works will help clear the way for the southern portal, Southern Tunnels launch site and construction laydown area.

Ground investigations

Ground investigations are crucial to the successful construction of the T2D Project.

Investigation of below-surface earth and groundwater will enhance the T2D Project’s understanding of the geotechnical and hydrogeological conditions to be encountered when the motorway’s tunnels are excavated.

In February 2023 we completed phase 4 of the ground investigations project we have been working on since August 2020. We have drilled more than 635 boreholes, reaching depths of 10 to 100 metres and data from these investigations will help inform the detailed design of the tunnels and lowered motorway.

Other on-site, pre-construction works are continuing along the corridor, including the relocation of utility services and the beginning of site clearance to prepare for major works at the southern end of the project.

Surveying

Over the next few months our engineering survey teams will be in the vicinity of the following areas along the T2D Corridor:

  • Grange Road between South Road and McDonnell Avenue, West Hindmarsh
  • Manton Street between South Road and Bacon Street, Hindmarsh
  • South Road to Port Road, Hindmarsh

The survey teams are collecting information on kerbs, footpaths, underground and overhead services and any other relevant surface features within the existing road corridor and surrounding areas. The information collected via the use of surveying personnel and electronic equipment, will aid in the development of the project design.

As part of the surveying works, you may notice different symbols painted onto the footpaths and roadways. These markings are assisting us to locate assets in the ground.

There should be no impact to residences or businesses whilst undertaking these works and the extent of the survey works and/or markings on the ground do not necessarily correspond to areas impacted by the project in the final design.

Environmental monitoring stations

The T2D Project will be constructing several environmental monitoring stations along the corridor. These stations will provide a baseline for the pre-existing environmental conditions prior to the commencement of construction.

The environmental monitoring stations will be carefully located to minimise any impact on the local community, while ensuring accurate measurement of key environmental parameters. The stations will be designed as low-profile transportable units containing a range of sensitive environmental monitoring instruments installed within a small secure compound.

No noise or fumes of any kind will be emitted by these stations, and they will be attended infrequently for maintenance purposes during normal business hours.

It is envisaged that these stations will be positioned on site during April 2023 and be retained until 2031.

Other works

For information about other ongoing roadworks and traffic disruptions, please visit the Traffic SA website.