The project will revitalise and transform Australia’s busiest commuter hub.

Sydney Central Station Metro
Sydney, Australia
At a glance

In 2018, Laing O’Rourke was awarded a $955 million contract to transform Sydney’s Central Station, delivering new Sydney Metro platforms beneath the station and an extensive pedestrian concourse, known as Central Walk.  The project would revitalise and transform Australia’s busiest commuter hub.

Designing certainty into the project

Laing O’Rourke’s design team introduced initiatives to find efficiencies, dramatically reduce materials required and improve customer experience. In doing so, they offered the client greater certainty around the project and its outcomes, including outperforming on sustainability. After work on the reference design, the Laing O’Rourke team brought multiple benefits, including:

  • Reducing total concrete usage in the metro station box by approximately 38%, by proposing diagonal load bearing columns.
  • Reducing materials by using a design solution for Central Walk which eliminated 462 low-headroom piles at platform level.
  • A two-metre increase in head height on the north-south concourse for a more generous space.
  • Decluttering thoroughfares by increasing column spacing from 12 to 15 metres.
  • Changed services design, reducing large quantities of service ducting.
  • Highly efficient water systems, including rainwater and stormwater systems.
  • Renewable energy technologies such as solar lighting and photovoltaic technologies to eliminate smell and noise from diesel-based portable light towers.

Successful delivery

The team maintained their focus on delivering the project in the most sustainable way. In July 2021, the project achieved a 6 Star Green Star Design Review rating from the Green Building Council of Australia, representing World Leadership in sustainable building design. Through this process, several outcomes were recognised, including: a 90% reduction in potable water consumption; implementation of a Climate Adaptation Plan; and a 123% reduction in Life Cycle Environmental impacts associated with materials specified.

Other key achievements included:

  • 92% steel used was manufactured in Australia
  • 72% of all reinforcing mesh and reinforcing bar installed on the project was manufactured by polymer inject technology, an energy reducing technology
  • 56% projected non-potable water use over the infrastructure lifecycle
  • More than $15.5m was invested in Aboriginal Participation throughout the duration of the project, significantly exceeding targets.
Sydney, Australia

Sydney Central Station Metro

Sydney, Australia

Sydney Central Station Metro


Million in value


metres of service ducting saved after design changes

Floorspace 2

of concrete saved after a redesign for structural efficiency