When the WestConnex Rozelle Interchange opened to traffic it marked a major moment in Sydney’s transport transformation. It’s been fantastic to revisit the project just over one year on with new photographs that truly capture the scale, detail and engineering behind this landmark achievement.
As part of this complex interchange — connecting the M4 to the Anzac Bridge and the M8 to the City West Link and Victoria Road, with more than 24 km of intricate underground tunnels — Geoquest supplied a suite of our engineered precast concrete and Reinforced Earth solutions.
Contributing to the development of the Interchange’s M4 section, Geoquest supplied;
- Five MSE walls (Terraplus®, Terratilt® and Terratrel®)
- Two TechSpan® arch tunnels
- More than 100 precast road and bridge barriers
- Two wire walls and;
- Two precast bridge headstocks
Seeing these structures now fully integrated into one of Sydney’s most significant interchange upgrades is a reminder of the value of considered engineering and strong collaboration across project partners. The Transport for NSW led project significantly reduces travel time for motorists. This is particularly prominent during morning peak hours and on trips between Parramatta and the Sydney CBD.
As we mark plus 50 years of Geoquest in Australia, we’re proud to reflect on projects like the WestConnex Rozelle Interchange — where innovation, teamwork and technical excellence come together to shape how cities move.
WestConnex Rozelle Interchange Project Overview
The $4.6 billion Rozelle Interchange and Western Harbour Tunnel was the missing link in Sydney’s WestConnex motorway – Australia’s largest road project. The Rozelle Interchange connects the extended M4 and the new M5 to the Anzac Bridge and Victoria Road in Sydney. The interchange provides for a new underground motorway to the City West Link and delivers an underground bypass of Victoria Road.
Here’s a closer look at the finished result across these project photographs.
Contact your local Geoquest office to discover how we can support your next major road infrastructure project.







