On completion, the Pacific Highway upgrade will boast four lanes of divided road from Hexham in New South Wales to the Queensland border, stretching 660km. A jointly funded project between the NSW and Federal Governments, 397km of divided lane motorway is already complete. There is currently 123km under construction, and the remainder of the route is in preparation for major works.

Coffey has provided consulting services on Pacific Highway projects since 1996. Our geotechnical, environmental, testing and project management specialists have been trusted advisers on multiple packages of works.

Our geotechnical and geophysical investigations for highway alignment has supported strong project planning to manage costs – and risk – across the project lifecycle. We’ve identified geotechnical and environmental constraints to understand the unique challenges of individual parts of the upgrade, as well as geotechnical design and construction advice. We’ve also provided construction materials testing, with onsite laboratories testing earthworks, concrete, aggregates and other construction materials.

We’ve proactively identified issues posing potential constraints to the project, including the presence of contaminated sites. We’ve also identified and modelled areas with acid sulfate soils and acid sulfate rock, as well as areas with naturally occurring arsenic mineralisation. We’ve provided pre-construction baseline water quality monitoring for rivers, creeks and groundwater as part of the project’s approvals and construction planning.

Our project management team also recently assisted Roads and Maritime Services with procuring new highway service centres at Ballina and Nambucca Heads as part of this Pacific Highway project.

We’ve recently been involved in the early works ground treatment design and tender documentation for major sections of soft soils on the 155km section between Woolgoolga to Ballina.

Click on the image below to view an interactive map.

Pacific Highway Map Full