Project Description
Pyrmont Bridge is a key thoroughfare for pedestrians and cyclists, linking Pyrmont and Glebe with the city centre. Designed by renowned Australian engineer Percy Allan, it opened in 1902. The bridge is currently in varying condition, with deterioration of its structural fabric that must be halted and reversed. The primary objective of this project is to restore Pyrmont Bridge so that the deck can safely accommodate a pedestrian loading of 5 kPa or an equivalent vehicular load, and to implement protective treatments that maximise the bridge’s lifespan, subject to ongoing inspection and maintenance. Restoration will be carried out in several stages.

Value Added
RBG provided the critical construction engineering and temporary works design for the complex, staged restoration of the heritage-listed Pyrmont Bridge. Our primary role was to develop a safe methodology for restoring the timber pier sets, a process that involved replacing numerous 'Condition State 3 and 4' structural elements while ensuring the bridge's absolute stability. Our scope began with detailed structural modelling of the piers to precisely understand existing load distributions. Using this analysis, our team designed and certified all critical temporary works, including a bespoke mono-prop system and all de-loading procedures. RBG managed the full engineering lifecycle for the package, from an initial high-level peer review of the asset's lateral movement report to final site inspections, overseeing the removal of deteriorated elements, and the application of new, heritage- approved protective coatings.