Abergeldie was engaged as head contractor for off-site fabrication and on-site installation and construction of a pedestrian bridge spanning the Princes Highway M1 freeway at Unanderra.


The bridge extends from the plaza on the Nan Tien Institute (northern) side of the six-lane Princes Highway M1 freeway and connects to the temple site at the bottom of the main temple staircase. Scope comprised:

  • Cut to fill excavation;
  • Management of potential acid sulphate spoil;
  • Two x 1200 diameter bored piles per pier;
  • FRP concrete abutments;
  • Pile caps;
  • Footings;
  • Retaining walls and approach slabs;
  • Four x 1.5 deep precast Super T Beams for each span;
  • Poured in-situ concrete decking;
  • Anti-projectile screens;
  • Stormwater drainage; and
  • hard and soft landscaping

Cut to fill excavation, piling, pile cap construction and landscaping works were carried out very close to an easement for a Jemena gas main, which required extreme care to ensure that the pipeline was located accurately. The program made substantial time allowance for the client’s Superintendent to arrange approvals from Roads and Maritime Services for a temporary traffic management plan for elements of the works which may impact on traffic using the six-lane Princes Highway freeway which is to be spanned by the new bridge. Piling for the bridge abutments/piers has to be carried out close to the road corridor and installation of the bridge span will involve a major crane lift. To avoid lane closures on the freeway, some redesign and significant additional temporary works were initiated to support the bridge during their installation.


Project Coordinator

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