Editorial: A new benchmark for precast! Swan River Crossings Project - WA

Australia’s first extradosed bridge has set a new benchmark for precast manufacturing and infrastructure delivery.

The September edition of Roads & Infrastructure Australia features National Precast Concrete Association Australia member Permacast
and its contribution to the Swan River Crossings project in Western Australia.

Replacing the ageing Fremantle Traffic Bridge, the project combines the structural efficiency of a cantilever bridge with the visual appeal of a cable-stayed bridge. Permacast manufactured 46 transverse T-Roff beams and 193 structural and architectural parapets for the bridge’s permanent works. 

With some beams exceeding 110 tonnes and measuring 26 metres long, every stage of production required careful planning. Manufacturing, curing, lifting, storage, transportation and installation were considered well before construction began. 

The article explores how Permacast managed exceptionally tight tolerances, complex post-tensioning requirements and strict curing conditions while delivering the precision and certainty required for this significant infrastructure project. 

A big thank you to Darren R. Hedley of Permacast, for contributing the content and industry insights featured throughout the editorial. 💡 🙏

Thank you also to Tom O'Keane from Roads & Infrastructure Australia for writing this excellent editorial and bringing it through to publication. 📰

Read the full editorial here:
Roads & Infrastructure September 2026 Issue 

#NationalPrecast #Permacast #RoadsAndInfrastructure #PrecastConcrete #SwanRiverCrossings