Adelaide: Torrens to Darlington Ground Investigations

Adelaide: Torrens to Darlington Ground Investigations

Our Adelaide team, working with Aurecon, have successfully completed testing for Phase 2 Ground Investigations and are currently undertaking testing for Phase 3 Ground Investigations for the Department for Infrastructure and Transport’s Torrens to Darlington Project (T2D); the most significant road infrastructure project ever undertaken in South Australia!

Adelaide team

Phase 2 of the Ground Investigations program ran from May 2021 to December 2021, and involved close to 200 boreholes and 4.3km of drilling. The Coffey Testing team completed almost 1400 tests on samples for this phase which included tests such as, Triaxial Testing, Total Suction of Soil, Consolidation, Shrink Swell Index, Soil Classification testing, Point Load, Brazilian Tensile Strength, Uniaxial Compressive Strength, and many more.

Phase 3 of the Ground Investigations program began in early 2022 and will see approximately 200 boreholes drilled, focused primarily on the corridor north of the Anzac Highway. Our team are in the process of completing over 200 tests for this phase which is estimated to be around 20% of the total testing that will be required for Phase 3.

The Project is the final 10.5km section of the North-South Corridor, and once complete, will deliver 78km of non-stop motorway between Gawler and Old Noarlunga, slashing 20 minutes of commuting time and bypassing 21 sets of traffic lights. The T2D design consists of a combination of tunnels, lowered and surface-level motorway, as well as overpasses and underpasses at key intersections. Construction is scheduled to commence late 2023 with completion expected by 2030.

We look forward to continuing to work with Aurecon to successfully complete the Phase 3 Ground Investigation program for the T2D Project. work with Aurecon