Bolivia Hill Bridge

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Project Details

This New England Highway $40 million Upgrade at Bolivia Hill involved the construction of a 320-metre, 150m centre span, concrete-balanced cantilever bridge utilizing post-tensioned balanced cantilever technology and cast-in-situ concrete construction methods. The Bridge will improve road safety and improve road transport productivity, efficiency and reliability of travel. 

Our Role

Engaged by GSRG CaSE & Pike Design was the Specialist Temporary Works (TW) Consultant to check various TW equipment and installations, both new and existing, throughout the construction phase. 

Using 3D modelling CaSE & Pike modelled the pier segment reinforcement, as well as resolving clashes CaSE & Pike optimised pour heights to increase production.

CaSE & Pike Design was involved directly in the initial above-ground works commenced on dual pier blades 18m high built using formwork lifted by a mobile crane. 12m long, 8m high pier heads were then poured on the formwork supported on a platform cantilevering 6m outward from the blades. 

The formwork created for the pier head was a combination of off-the-shelf formwork together with components from existing form-travellers, modified for dual-purpose use to minimize the number of crane lifts. CaSE & Pike Design checked, inspected, and certified this overall formwork and access system. The Form-travellers, re-used from a previous project, were adapted to suit the bridge gradient; to comply with local Australian Standards; and to improve productivity and safety by several innovations. Following pier head construction, the Form- travellers were assembled on top of the pier head to commence balanced cantilever construction. CaSE & Pike also completed designs for the closure pour including sequencing, clamping and formwork for both end span and mid span closures involving significant liaison with the permanent works designer.

New South Wales, AU
Project Value
AUD 133m
Georgiou and SRG Global
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  • Pier segment falsework/ formwork​ check and certification
  • Form-traveler modifications
  • Design, inspection
  • Pier segment reinforcement 3D modelling, 2D detailing
  • Rebar/embedment clash study
  • Permanent and Temporary Works Interface checking
  • Temporary to Permanent Works connection design
  • Closure pour design and engineering
  • Bridge Specialist technical support
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