Seymour Whyte has been awarded a design and construct contract by Transport for New South Wales (Transport) for the M5 Westbound Upgrade in Sydney. Construction is scheduled to begin in 2026.

The project will improve network reliability to support ongoing economic and residential growth in western Sydney, reduce congestion by removing existing traffic weaves, and improve access to the Liverpool CBD. It will also deliver pedestrian and cyclist links across the Georges River and enhance freight connectivity between the Moorebank Intermodal Terminal and the state road network.

Seymour Whyte Managing Director and Chief Executive Officer, John Kirkwood, said the contract award reflects the company’s growing role in shaping critical infrastructure across Australia.

“We’re proud to partner with Transport for NSW (Transport) on another city-shaping project. This upgrade will deliver real benefits for commuters, businesses and local communities, improving safety, connectivity and long-term resilience in one of the fastest growing parts of Sydney,” Mr Kirkwood said.

Chief Operating Officer Steve Lambert highlighted Seymour Whyte’s proven capability in delivering complex urban infrastructure upgrades with minimal disruption to the surrounding environment.

“Our team brings deep expertise in staged construction, sustainability, innovation, traffic management and stakeholder engagement – skills that will be essential in delivering this upgrade safely and efficiently in a live motorway environment,” Mr Lambert said.

General Manager for the Central Region (NSW/ACT), Pat McCormack, said the team is excited to help deliver improved outcomes for western Sydney based on a solution that balances performance, sustainability, and value.

“From the outset, we’ve applied a value engineering approach to optimise the design for both efficiency and sustainability. By targeting high-emission materials such as concrete, steel, and asphalt, we’ve significantly reduced embodied carbon — delivering high-performing outcomes through smart design choices that will have a lasting impact,” Mr McCormack said.

“This project strengthens our long-standing presence in Sydney and allows us to create local employment and training opportunities — while also improving active transport links and freight efficiency across the region,” he added.

Works include:

  • A new two-lane westbound M5 Motorway exit for Hume Highway traffic, located about 1.5 kilometres east of the existing Hume Highway exit.
  • An alternate westbound on-ramp from Moorebank Avenue to the M5 Motorway.
  • A three-lane 290-metre-long bridge with a shared user path over the Georges River.
  • Removal of the current M5 Motorway westbound Hume Highway exit.
  • Installation of new drainage infrastructure.
  • Intelligent Transport Systems (ITS).

Once complete, the upgrade will reinforce the M5 Motorway’s role as a vital transport corridor for south-west Sydney and a key link in supporting the region’s continued growth and connectivity.