Chinderah Bypass Project

It takes time to adapt to new regulations and methodologies; however, the Chinderah Bypass contract saw Neumann Contractors placed in a situation that required experience that was yet to be gained. No precedence had been set, so a sharp learning curve was essential.

The Chinderah Bypass was a technically complex project that required a combination of best management practices and the conception of new industry practices to achieve the desired end. Modifying the original concept during the construction phase through systematic scientific research and a touch of entrepreneurship has seen a potential environmental nightmare turned around to benefit both the contractor and the community.

Despite the difficulties faced during the project, Neumann Contractors completed the contract to the clients’ requirements on time and within budget.  A success worthy of winning the 1997 National Case Earth Award for demonstrating a commitment to innovation and best practice in the field of environment in civil construction.

Environmental Impact Studies (EIS) had concluded that increasing the waterway by removing sand would reduce the risk of flooding of adjacent low lying developed areas. Therefore the dredging of the River was part of a longer-term plan for the Chinderah Bypass area.

The dredging operation was to be conducted with strict control as the road traversed over 800m of tidal wetland, crossing three large tidal drains and areas that were considered environmentally sensitive.

To further complicate the situation, prior testing had revealed that existing soils in the road corridor had recorded a significant Acid Sulphate Potential.