The project will upgrade around 35 kilometres of The Northern Road between The Old Northern Road at Narellan and Jamison Road at South Penrith. The project will see The Northern Road upgraded to a minimum four-lane divided road, and up to an eight-lane divided road with dedicated bus lanes.
The Northern Road Upgrade is being delivered in six sections including:
- The Old Northern Road, Narellan and Peter Brock Drive, Oran Park (3.3km).
- Peter Brock Drive, Oran Park and Mersey Road, Bringelly (11.3km).
- Mersey Road, Bringelly and Eaton Road, Luddenham (5.5km).
- Eaton Road, Luddenham and Littlefields Road, Luddenham (4.5km).
- Littlefields Road, Luddenham and Glenmore Parkway, Glenmore Park (6km).
- Glenmore Parkway, Glenmore Park and Jamison Road, South Penrith (4km).
The first section will involve the southernmost section of the road near Narellan.
The upgrade to The Northern Road will also include interchanges with the new M12 Motorway, the M4 Motorway and Bringelly Road.
The Northern Road upgrade, as part of the Western Sydney Infrastructure Plan, will provide better road linkages within the Western Sydney region and benefit the region's growing population, including through reducing commuting times.
The Western Sydney Infrastructure Plan will ensure the proposed Western Sydney Airport will be supported by a high-quality surface transport network to ensure the efficient movements of passengers, staff and freight.
The total cost of the project is $1,584.5 million. The Australian Government is providing $1,233.5 million and the NSW Government is providing $351 million towards the construction of this project.
Construction on the first section of the upgrade commenced in January 2016. The full upgrade is expected to be open to traffic in 2020.