Torrens to Darlington (T2D) Project - South Tunnel Portal I November 2025

Описание: Southern Construction Precinct - November 2025

🛠️ Southern Tunnel Overview

Length: Approximately 4.5 km, running between Clovelly Park and Glandore.

Construction Start: Major works began in 2025, with tunnelling expected to commence in the second half of 2026.

Tunnel Boring Machines (TBMs): Two large TBMs will excavate the twin tunnels, launched from a 35-metre-deep
diaphragm wall box at Clovelly Park.

Infrastructure:

Includes a spoil handling facility, closed conveyor system, bentonite plant, and water treatment facility to support excavation and sustainability.

Two smaller TBMs will create cross passages between the main tunnels.

Workforce Impact: Up to 550 workers at peak in the Southern Precinct, contributing to an estimated 5,500 jobs annually across the project.

This southern tunnel forms part of the final 10.5 km link in Adelaide’s North-South Corridor, aiming to eliminate 21 sets of traffic lights and dramatically improve travel times and safety.

The T2D Project is the final 10.5km section of the North-South Corridor, and will complete 78km of non-stop, traffic light-free motorway between Gawler and Old Noarlunga. Drivers will be able to bypass 21 sets of traffic lights between the River Torrens and Darlington as they travel through two separate tunnels, connected by an open motorway.

For more information of this project visit - https://www.t2d.sa.gov.au/

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