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M12 Motorway


Funding Programme:Investment Road and Rail Programme
Status:In planning
Transport Mode:Road
Expected Start/Finish:2020 - 2025
Estimated Project Cost:$1,246,000,000
Australian Government Contribution:$997,000,000
Local Council/Shire:Fairfield City Council,Liverpool City Council,Penrith City Council

Project Description

The project will involve the construction of a new east-west motorway between the M7 Motorway near Cecil Hills and The Northern Road at Luddenham.  The preferred corridor route is 16 kilometres long and currently 300 metres wide however the final width of the motorway is expected to be much less at around 100–150 metres.  The M12 Motorway will serve as the major access route to the Western Sydney Airport and connect to Sydney’s motorway network.  The proposed scope of works includes:

  • construction of a four-lane motorway (two lanes each way) divided by a wide central median. The wide median will cater for a six-lane configuration, if required at a later date.
  • minimum design speed limit of 110 km/h;
  • grade separated interchange at the Western Sydney Airport;
  • New at grade connection to The Northern Road;
  • Motorway-to-motorway interchange at the M7 Motorway;
  • Provision for a grade separated interchange in the vicinity of Mamre Road / Devonshire Road;
  • off-road shared pedestrian and cyclist paths; and
  • retention of the existing Elizabeth Drive to maintain and facilitate local road access.


The M12 Motorway, as part of the Western Sydney Infrastructure Plan, is expected to deliver significant travel time reductions and increased travel time reliability to road users and freight operators, by providing a high standard and efficient connection to the proposed Western Sydney Airport compared to using the existing road network.


The total cost of the project is $1,246 million. The Australian Government is providing $997 million and the NSW Government is providing $249 million towards the construction of this project.


In November 2016, the NSW Government announced the modified orange option as the preferred corridor route for the M12 Motorway.  NSW Roads and Maritime Services are currently working on the preliminary road design which is expected to be on public display in mid-2017.

Construction is expected to commence in 2020 and be completed in the mid-2020s.

Disclaimer: The material contained in this site is made available on the understanding that the Department is not thereby engaged in rendering professional advice for a particular purpose. Before relying on the material in any important matter, users should carefully evaluate the accuracy, completeness and relevance of the information for their purposes and should obtain appropriate professional advice relevant to their particular circumstances.

Project details last updated: 20/02/2017