New Dubbo Bridge - Preliminary Environmental Investigation

Photo of the Macquarie River with a bridge overhead

The town of Dubbo in Central West NSW is growing, as it sits alongside the majestic Macquarie River. Yet, there is nothing majestic about the Macquarie when it floods, as it closes one bridge and the other cannot carry heavy vehicles, effectively bringing road based freight to a standstill.

As a result, a new high-level bridge will be built crossing the Macquarie in Dubbo, but exactly where was the optimum position? With a long and proud history of working closely with RMS on major transport infrastructure projects, they again called on Cardno to provide the Preliminary Environmental Investigation (PEI).

We considered six strategic corridor options for the new bridge’s position with respect to seven assessment criteria: noise and vibration impacts, biodiversity, Indigenous and non-Indigenous heritage, landscape character and visual assessment, socio-economic impact, land use as well as soils and contamination.

Aerial photo overlooking the city of Dubbo at sunset

The relative level of net impact of each of the six strategic corridor options was then determined and the findings also helped inform the next steps; adding value for our client we provided recommendations regarding requirements for the survey and Environmental Impact Statement (EIS).

Our PEI also included a community consultation summary which collated and analysed the more than 800 public submissions received by RMS following public display of the six strategic corridor options. Our work helped inform the level of community support and key concerns for each of the six options.

We were then engaged by RMS to undertake detailed flood modelling of the preferred corridor, drawing on our previous Macquarie River Flood Study we undertook for the Dubbo Regional Council.