Delivered by CPB Contractors and Georgiou Group Joint Venture (CPBGGJV) for Transport for NSW, the project combined greenfield construction with complex upgrades to live arterial roads and interfaces with multiple state-significant infrastructure projects and utilities.
What was delivered
- Dual-carriageway motorway, grade-separated airport interchange and new Airport Access Road
- Upgrade of Elizabeth Drive to a grade separated intersection, (28,000 vehicles/day) through seven 56-hour traffic switches
- Construction of 11 major bridges, including installation of 196 Super-T structures and a single-point interchange with girders up to 110 tonnes
- 35,000 m³ of continuously reinforced concrete pavement and 20,000 m³ of lean mix concrete
- Intelligent Transportation Systems, drainage, utilities, shared paths, landscaping and an integrated Aboriginal Art Strategy, including the Great Emu in the Sky
More than 4,920 workers contributed over 3.3 million hours cross the project lifecycle.
Setting quality benchmarks
The project delivered the first full-corridor application of longitudinal diamond grinding and grooving on a continuously reinforced concrete motorway in NSW, enhancing ride quality, skid resistance and noise outcomes.
To achieve high quality concrete paving, an on-site batch plant was established to ensure concrete supply consistency, uninterrupted paving and reduced haulage emissions.
People, legacy and sustainability
The project exceeded targets for Aboriginal participation, women in trades, apprentices, undergraduates and local employment through structured training pathways.
Sustainability outcomes included a 39% reduction in material-related greenhouse gas emissions, 17.8% reduction in energy emissions, 100% reuse of reusable spoil, biodiversity initiatives and safe encapsulation of 7,700 m³ of asbestos-affected material beneath pavement areas.
The M12 Motorway provides direct access to the new Western Sydney International (Nancy-Bird Walton) Airport and connects the airport to Sydney's motorway network.