M4 Smart Motorway project

The NSW Government is investing $470 million to build the M4 Smart Motorway project, which will introduce intelligent technology to the M4 Motorway between Pitt Street, Mays Hill and Russell Street, Lapstone.

What's happening now?

The M4 Smart Motorway project, due for completion in 2020 will be delivered in five stages, which will help limit disruption along the motorway, and ensure we keep people moving. The first three stages have been awarded to contractors and for more information, click on the relevant stage:

  • Stage 1 – Mamre Road, St Marys to Reservoir Road, Prospect
  • Stage 2 – Reservoir Road, Prospect to Pitt Street, Mays Hill
  • Stage 3 – Mulgoa Road, Penrith to Mamre Road, St Marys

Russell Street, Lapstone to Mulgoa Road, Penrith will be completed in Stages 4 and 5, and is yet to be awarded to contractor

For more information about each stage of work and the upgrades in your area, follow the link to our interactive portal.

Project background

The M4 Smart Motorway Project includes a 35 kilometre upgrade along the M4 Motorway from Lapstone to Mays Hill, and will provide a tailored technology solution to create a better travelling experience for motorists, and a more consistent journey.

Smart motorways, also known as managed motorways, use complementary technologies to monitor traffic conditions, manage congestion and respond to incidents in real time. The M4 Smart Motorway will introduce a smarter way of travelling the M4 by using real time information, communication and traffic management tools to provide motorists with a safer, smoother and more reliable journey.

The M4 Smart Motorway will be the first smart motorway for NSW and will bring together intelligent traffic technologies in one place to maximise the performance of the motorway.

More information

Cyclist Safety

For safety reasons, there will no cyclist access on the M4 Motorway between Mamre Road and Reservoir Road from Friday 1 December until project completion in 2020. Please see our cycle detour map.

3D animation

Watch a short 3D animation on the M4 Smart Motorway project and the benefits and features of a smart motorway.


Did you know?

Western Sydney is Australia’s third largest economy and in its own right would be Australia’s fourth largest city. During the next 20 years the region is expected to grow from two million to three million people, which is why the NSW Government is investing money into significant road infrastructure.

For more information about our projects in your area please visit www.rms.nsw.gov.au/projects.

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