Ross River Pedestrian Bridge Rehabilitation

Associated Engineering provided alternate design for the foundations of the main suspension cable anchorage. The original system was based on helical screw piles, with steep batter and over 24 metre depth. Despite poor soil conditions, a different arrangement of concrete-filled driven pipe piles was successfully designed. Alternate design for the wind cable deviator tower and anchorage involved a single anchorage system using pipe piles and a steel cap plate. These alternate foundation systems minimized excavation; eliminated the need for excavation below the water table; and allowed construction to continue through the winter. Significant cost and time savings were also achieved through reduced concrete volumes and faster pile installation.