Concrete Services
WestConnex is Australia’s largest continual tunnel infrastructure project, delivering a 33km motorway network with 6–10 lanes, significantly enhancing connectivity across Sydney. The project was developed to alleviate congestion, improve freight efficiency, and provide faster, more reliable travel routes.

The project involves the construction of multiple motorway tunnels and interchanges, linking key transport corridors across Sydney.

As part of the staged delivery of the project, Dowsing Group was awarded subcontractor packages for multiple works:

Client

Acciona Australia Lendlease Samsung Bouygues JV JHCPB (John Holland & CPB)

Sector

Infrastructure

Location

Sydney, NSW

Duration

2020 - 2024

Type

Construct Only
M4-M5 Link Tunnels

Delivered in two parts, stage 3A is the tunnels connecting the M4 and M8 and Stage 3B is the Rozelle Interchange.

  • 128,500m2 of CRCP (Continuous Reinforcement Concrete Pavement) at
  • 240mm placed with the slipform paver
  • 6,300m2 of hand placed shoulder pavement
  •  1500lm of TL4 barrier
  • 246,000 m2 of Grinding
M4-M8 Link Rozelle Interchange

Rozelle Interchange links the M4 to the Anzac Bridge and the M8 to City West Link and Victoria Road.

  • 17,500 m2 of CRCP (Continuous Reinforcement Concrete Pavement) at 240mm
  • 1,000m2 of CRCP in a single shift on more than one occasion.
  • 400m2 of hand placed shoulder pavement
  • Slipform concrete kerb and extruded kerb

Dowsing Group adhered to the head contractor WHS requirements and project standards, ensuring compliance throughout the various packages. Project specific Safe Work Method Statements (SWMS) were developed for slipform pavement CRCP & hand placed CRCP and slipform concrete barrier works.

Looking for the next step in your civil construction career?

At Dowsing Group, we’re shaping the infrastructure that connects communities. Join our team of skilled professionals and help contribute to local civil projects that leave a lasting impact.