The project involved constructing a new three-span concrete bridge (63m long, 10m wide) over the Pimpama River, along with associated approach works. It included ground improvement, environmental management, and detailed bridge construction.

Scope:

• Construction of the new three-span concrete bridge, including provision for a future 2m pedestrian footpath, including:
  • Cast-in-place piles with liners at abutments and piers.
  • Abutments and wingwalls for future pedestrian walkway.
  • Precast prestressed deck units, relieving slabs, bridge kerbs, and rails.
  • Grouted rock pitching, waterproofing membrane, and deck penetrations.
  • Asphalt surfacing for bridge and road approaches, traffic barriers, and cyclist rails.
  • Conduits for future lighting, fauna crossings, and access ramps.
  • Drainage, batter slope protection, navigational signage, and bridge date plate.
  • Road traffic barriers and end terminals.
  • Protection of existing services.
• Ground improvement works, including the design and installation of 2,800 Controlled Modular Columns.
• Rock spill protection at both abutments, concrete retaining walls, and scour protection on both northern and southern approaches.
• 445m of bridge approaches connecting to the existing road, with stormwater drainage, signage, and pavement marking.
• Landscaping, revegetation, and site restoration, including vegetated filter strips.
• Vegetation clearing, site preparation, and removal/reinstallation of road furniture.
• Temporary access tracks, storage areas, and environmental approvals for temporary works.
• Construction of temporary piling and crane platforms, including waterway work.
• Traffic management and control on-site and off-site.
• Piling works over water using 1.5m diameter steel-lined cast-in-situ piles up to 40m deep, with dewatering and acid sulphate water management.
  Construction of a 6.8m high, 130m long retaining wall, and managing access restrictions.
• Design and construction of access to the creek, managing significant environmental constraints.
• Pavement construction using cement-treated materials and complex traffic management due to nearby swamp land and overhead powerlines.
• Environmental management, including work within the tidal zone, acid sulphate soil management, and marine fauna and flora protection.