The Bennelong Bridge located in Western Sydney
The Bridge is a dedicated Transit Way for busses, pedestrians and cyclists connecting the suburbs of Wentworth Point and the Rhodes peninsula.
The design and construct contract was delivered by a joint venture between Brady Marine & Civil and VSL Australia.
The 305m long, 12m wide bridge consists of a post-tensioned concrete box girder, erected by the balanced cantilever method using match-cast segments.
The scope of works included:
- Design of all works including permanent and temporary works.
- Supply & installation of 42 nos driven steel tubular piles.
- Match-casting of 97 precast concrete segments.
- Construction of pile caps featuring large precast concrete tubs filled with in-situ concrete
- Construction of in-situ concrete pier columns.
- Erection of precast concrete segments by balanced cantilever method.
Special Features
A casting yard for the precast concrete segments was established on site in a disused warehouse provided by our client. From here, segments were loaded directly onto marine transport via a straddle carrier and bespoke temporary finger jetties. This saved the logistics, traffic congestion and CO2 emissions associated with an off-site casting yard. The straddle carrier was sourced second hand from a previous VSL project, enabling reuse of an existing asset.
The existing seabed contained contaminated soils from historical industrial activities on the adjacent sites. Brady Marine worked with their chosen designers to develop a design and construction solution which eliminated a requirement for removal of any seabed materials from within the driven piles, thereby avoiding the challenges of transporting an treating contaminated soils.
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