This major addition to Sydney’s underground metro system integrates a new station and pedestrian tunnels beneath Australia’s busiest rail terminal. The structural design shaped the overall outcome, improving accessibility, reducing embodied carbon, and enhancing sightlines, safety, and wayfinding. A top-down construction method and reimagining of the reference design show how structural engineers can lead high-impact infrastructure from below ground and upwards.
A complex and ambitious project that exemplifies thoughtful structural planning and clear technical leadership. The engineers refined and improved the reference design, introducing a clever top-down sequence to meet demanding programme constraints. With reusability and demountability carefully considered, the structure demonstrates how intelligent problem-solving can shape construction and achieve long-term value.