Our Business Activities

43% of imported materials used were recycled

Environmental Management

Case Study

City East Alliance achieves Australian first

The Great Eastern Highway (GEH) Project, officially opened by the Prime Minister, has been verified to have achieved a commendable ‘As Built’ rating under the Infrastructure Sustainability Council of Australia’s Infrastructure Sustainability rating scheme. Following on from participation in a pilot trial of the rating tool, the City East Alliance (CEA) team is proud to be the first project in Australia to achieve an ‘As Built’ rating under this new rating scheme.

The City East Alliance team is proud to be part of the first project in Australia to achieve an ‘As Built’ rating under the Infrastructure Sustainability rating scheme.

The Infrastructure Sustainability (IS) rating tool is Australia’s only comprehensive rating system for evaluating sustainability across design, construction and operation of infrastructure. The IS scheme is effectively an independent sustainability auditing process which looks at both ‘process’ and ‘outcome’ to determine what extent an infrastructure project has sustainability embedded within it.

Working collaboratively in an Alliance provided an ideal platform for applying the technical requirements and specification reviews of innovations such as warm mix asphalt and crushed comingled recycled concrete sub-base and recycled asphalt pavement. More than a dozen sustainability initiatives were developed by the Alliance and implemented across the project in some capacity. Many of these initiatives involved reducing waste, reusing material onsite, recycling waste and using recycled products. As a result, no potable water was used during construction and 43% of imported materials by weight were recycled.

The CEA team comprised of Main Roads working with Leighton Contractors, GHD and NRW Holdings. The $280 million GEH upgrade involved widening a 4.2 kilometre section of road in Belmont and was delivered six months ahead of schedule. Prior to the upgrade, this stretch of road was operating beyond capacity with a crash rate almost twice that of the State average. To learn more about the Infrastructure Sustainability rating tool, refer to the Sustainability page on our website.