STEPHENSON AVENUE EXTENSION
S2M Evolution Alliance – A joint venture of Acciona, Cough, WSP, MRWA and PTAYear: 2024
The project consists of an extension of Stephenson Avenue from Scarborough Beach Road, to Cedric Street, including a new Mitchell Freeway Interchange, replacing the freeway interchange at Cedric Street. It will also provide a Smart Freeway southbound on-ramp with coordinated signals. This includes three new bridges, including two over Mitchell Freeway.
To facilitate the project works CMR Tech was engaged to undertake Pile Integrity Testing of several piles supporting traffic bridges and footbridges.
The poor ground conditions were a major challenge on this project, with soft peat soils and a high-water table leading to difficult foundation conditions. In addition, construction of the new structures was constrained by the proximity of the existing infrastructure and the need to keep both Mitchell Freeway and the PTA rail line open.
