NSW Motorway Upgrade Fences Help Protect Native Frogs Using Eco-Safe Australian Concrete Posts.

This Case Study was published in 2020 by Infrabuild. Click to go to original Case Study

InfraBuild Wire has worked closely with customer Australian Concrete Fence Posts to deliver a fencing solution designed to protect populations of endangered frogs.

Protecting native fauna

The Woolgoolga-to-Ballina segment of the Pacific Highway features 155 km of highway extending north of Woolgoolga at the northern extent of Sapphire to south of Ballina where it ties into the southern extent of the Ballina bypass.

A number of endangered frog populations were identified by the RMS as being at risk by the construction of the highway upgrade. Among the species known to inhabit the area surrounding the highway upgrade are the Green-thighed frog, the Wallum Sedge Frog and the Giant Barred Frog.

The RMS has sought to minimise the potential effects of the works on these frogs by introducing measures before and after the building of the highway upgrade. Included in these measures have been environmental management studies to determine the impact of the roadworks on frog populations and the installation of RMS-approved fencing to keep frog populations safe.

These initiatives have taken place alongside other environmental measures designed to protect local flora and fauna such as: relocating 25 native stingless bee hives; salvaging 350 grass trees and storing them locally for reuse; planting 80,000 koala feed trees; and installing 20km of temporary and permanent koala fencing.

The installed fencing has been shown to be effective at reducing harm to the endangered frog species inhabiting the area with the presence of frogs on the road side of the exclusion fencing found to be 4–7 times lower than that on the habitat side.

Prestressed fence posts fit for purpose

Australian Concrete Posts’ prestressed concrete fence posts use Australian-made materials and are built to the RMS’s strict regulations.

Suzi Mould from ACP says “We manufacture our product using InfraBuild wire because it’s made in Australia, made to the correct standard so we can meet the specs set by the RMS and is always reliable,” Suzi says. “Our fence posts are made using two pre-stressed reinforcing strands and 40MPa concrete that won’t leach chemicals into the soil. It also contains no lime in it, so there’s no rusting of the wire strand. They’re also bushfire-resistant, and rot and termite resistant.

“Our prestressed concrete fence posts are designed for longevity and we say our posts are guaranteed to last a lifetime,” she adds. “We confidently say 80–100 years, which is what the RMS requires.”

Aside from supplying wildlife exclusion fencing to fencing contractors, as has been the case with the Pacific Highway works, Australian Concrete Posts also supplies directly to large cattle stations, small holdings, national parks and rural stores.

This Case Study was published in 2020 by Infrabuild. Click to go to original Case Study

Read how Australian Concrete Posts were used on section of new motorway in Northern NSW to build the frog fence. Australian Concrete Posts are used by RMS as ACP posts are built to strict quality guidelines and to the Govt spec. Click to go to original Case Study


Photo of Giant Barred Frog – by Matt Stephens