23/06/2026
Stress ribbon bridges show that elegant structures are rarely simple structures.
Most of the stiffness and strength come from the catenary shape, the natural curve formed under self-weight, which means geometry, load path and time-dependent effects all shape the final design.
The critical case arises later in the bridge’s life, after creep and shrinkage have flattened the catenary and pedestrian loading and cold temperatures produce the highest forces.
For bridge engineers, the key lesson is understanding how the structure behaves over time, not just how it appears at completion.
This is the second post in a three‑part series on Australia’s first stress ribbon pedestrian bridge; the next post will look at the bespoke finite element modelling used to capture this behaviour over time.