Ascent was engaged by the UGL/CPB Joint Venture to support the mechanical installation scope for the M6 Stage 1, a major infrastructure project forming part of Sydney’s expanding motorway network. This $3 billion development includes a 4 km twin tunnel connecting the M8 at Arncliffe to President Avenue in Kogarah, designed to ease congestion and streamline traffic flow in the city’s south.
Our role involved the complete mechanical fit-out and installation of key structural elements within the tunnel roof. This included traffic management signage (TMS), ISLA speaker signs, HTK signs, speakers, and custom brackets. Operating primarily from elevated work platforms (EWPs) and scissor lifts, our experienced teams delivered a seamless installation across both the southbound and westbound tunnels.
Precision and alignment were critical to the success of the project. Every component was installed to meet the client’s exact specifications, ensuring safety, performance, and long-term durability. Ascent’s structured and consistent delivery on site contributed to the broader program objectives and demonstrated our capability to perform in complex, high-risk tunnel environments.







