Maria Creek Bridge

The project involved demolition of an existing timber bridge in an environmentally sensitive area, piling foundations, construction of a pre-cast girder deck bridge, services relocations and construction of approaches.

Scope of works included:

  • Demolition of existing timber bridge
  • Excavation of 1500 m³ for bridge approaches, waterways and structures
  • 100 metres of 1200mm diam. in-situ reinforced concrete piles
  • Reinforced concrete abutments and wingwalls
  • Supply and erection of precast deck units
  • In-situ pouring of pedestrian walkway, relieving slabs and kerbs
  • Ground treatment under embankment and in subgrade
  • Guard rails and balustrade
  • Relocation of utility services onto the new superstructure

Notable aspects of the project:

  • Working over a sensitive waterway
  • Piling near overhead powerlines
  • Service relocations
  • During the project SGQ introduced a design enhancement, utilising a greater number of 1200 diameter piles, to shallower depths, in lieu of 1500 diameter piles to difficult greater depths.