Ballina Bypass Case study Precast arches Strength. Performance. Passion.When Humes won the tender to supply three arch structures for the Ballina Bypass, its engineers took on some major design challenges - a steep gradient of 13.5 degrees, soil movement of 50mm, asymmetrical loadings, and the tightest centerline radius on an arch ever built in Australia. The bypass project involves the upgrade of 11.5 km of dual carriageway road on the appro

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