M12 Motorway

The Australian and NSW governments are proposing to build a new motorway as part of the Western Sydney Infrastructure Plan (WSIP), a 10 year, $3.6 billion road investment program.

The new motorway will provide direct access to the planned western Sydney airport at Badgerys Creek and connect to Sydney’s motorway network.

Updates and announcements

The consultation period for the M12 Motorway shortlisted route options closed on Friday 11 March 2016. A Community Consultation Report (PDF, 19Mb) summarising the feedback received and the responses from Roads and Maritime is now available.

This consultation period follows the display of a study area (PDF, 1.8MB) for the motorway, which was announced in July 2015. We held six community information sessions and welcomed feedback on the study area in July and August 2015.Roads and Maritime considered the community’s feedback and responded to matters raised in the Community Consultation Report (PDF, 14.4MB).

You can also view or download the Shortlisted Options Report (PDF, 26MB) and the M12 Strategic Route Options Identification Report (Appendix) (PDF, 22MB) which explains how we identified the eight possible shortlisted route options, from a long list of 15 options.

About the M12 Motorway

The new motorway would provide direct access to the planned western Sydney airport at Badgerys Creek and connect to Sydney’s motorway network.

The proposal is for an east-west motorway of about 15 - 17km between the M7 Motorway and The Northern Road which would provide increased road capacity and reduce congestion and travel times in the future. It would also improve the movement of freight in and through western Sydney and is expected to serve the Western Sydney Priority Land Release Area and the Western Sydney Employment Area.


The benefits include:

  • Provide direct access from the M7 Motorway to the planned western Sydney airport at Badgerys Creek, and from the M4 via The Northern Road
  • Improve access to the Western Sydney Priority Growth Area and the South West Priority Land Release Area
  • Increase road capacity for future growth and development
  • Improve traffic safety for road users
  • Increase pedestrian and cyclist infrastructure
  • Improve road freight movement to key commercial centres
  • Reduce the cost of congestion impact to the community and business.

Key features

Key features include:

  • A motorway built for up to six lanes with a central median to separate opposing traffic flows
  • A grade separated interchange at the planned western Sydney airport
  • A new at grade connection to The Northern Road
  • A motorway-to-motorway interchange at the M7 Motorway
  • An off-road shared path for pedestrians and cyclists path.

What happens next?

The M12 Motorway preferred corridor option is planned to be announced in late 2016 with construction expected to start around 2020, subject to approval.

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