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 Western Sydney Airport at Badgerys Creek and connect to Sydney’s motorway network.

Updates and announcements

Following feedback from the community and in consultation with Australian and NSW government agencies, Roads and Maritime has selected a modified orange option as the preferred corridor route for the M12 Motorway.

Further information is available in the Community Update (PDF 902Kb).

You can also view or download the Preferred Corridor Route Report (PDF 20.6Mb) and the M12 Motorway Preferred Corridor Route Summary Report, (PDF 5.2Mb) which explains how we selected the modified orange option as the preferred corridor route.

Project snapshot

  • Start date of major construction: 2020
  • Expected completion date: before the opening of the Western Sydney Airport
  • Funding: Australian and NSW governments

Project background

The new M12 Motorway would provide direct access to the Western Sydney Airport at Badgerys Creek and connect to Sydney’s motorway network.

The preferred corridor route is an east-west 16 kilometre motorway between the M7 Motorway, Cecil Hills and The Northern Road, Luddenham. The motorway 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 Growth Area and the Western Sydney Employment Area.

Benefits

The key benefits of the project are to:

  • Provide direct access from the M7 Motorway to the Western Sydney Airport at Badgerys Creek, and from the M4 Motorway via The Northern Road
  • Improve access to the Western Sydney Priority Growth Area and the South West Priority Growth 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

The key features of the project are:

  • An east-west 16 kilometre motorway between the M7 Motorway, Cecil Hills and The Northern Road, Luddenham
  • A 300 metre wide corridor, that would be reduced to 100-150 metres during the preliminary design process
  • A motorway built for four lanes (with provision for up to six lanes) with a central median to separate opposing traffic flows
  • A 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.

What happens next?

Roads and Maritime will actively look at ways to further reduce the impact of the M12 Motorway on the community. The preferred corridor route, announced in November 2016, is currently 300 metres wide however the final width of the motorway is expected to be much less at around 100–150 metres.

Once the preliminary road design is finalised, information on the final width of the motorway will be provided to the community and we will contact all potentially impacted property owners to discuss their individual circumstances.

The preliminary road design is expected to be on public display in the second half of 2017.

Construction is expected to start around 2020, subject to approval.

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