M4 Widening

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M4 Widening

(Parramatta to Homebush)

Widened the existing M4 Motorway from Parramatta to Homebush from three to four lanes in each direction.

WestConnex M4 Widening involved building an additional lane in each direction on the M4 Motorway between Parramatta and Homebush. The project is about 7.5km long.

Environment and planning 

The M4 Widening received planning approval in December 2014 and work started in March 2015.  


Project history

  • 15 August 2017 - Distance-based tolls commence on the new M4.
  • July 2017 - M4 Widening opened, one month toll-free.
  • February 2017: New viaduct open to traffic, with work on resurfacing old westbound carriageway underway.
  • January 2017: New interchange at Homebush Bay Drive opened to traffic. Cars travelling south on Homebush Bay Drive can access M4 Motorway westbound via a 'G-loop', removing two sets of traffic lights.
  • March 2015: Construction work on the M4 Widening started.
  • December 2014: The contract to build the M4 Widening was awarded.
  • December 2014: The project was approved by the Department of Planning and Environment subject to a number of conditions.
  • October 2014: A Submissions and Preferred Infrastructure Report was prepared in response to submissions received during the EIS exhibition period. The report was considered by the Department of Planning and Environment and informed the Minister for Planning, in the projects approval assessment.
  • August to September 2014: The M4 Widening Environmental Impact Statement was exhibited for community comment and a community update and environmental overview were prepared.
  • March 2014: A shortlisted of contractors to build the M4 Widening was announced. 
  • November 2013: Expressions of interest to construct the M4 Widening were issued.
  • October to November 2013: Community consultation was carried out on the motorway concept design and the feedback received is outlined in the M4 Widening Community Issues Report. 
  • September 2013: The planning application for the M4 Widening was lodged with the Department of Planning and Environment.

Project stats

Project value^$497 million^
Current statusOpen to traffic 
Construction startMarch 2015
Open to traffic2017
Current traffic projections*163,800* vehicles per average weekday by 2031

* Based on WestConnex Road Traffic Model V2.1, WestConnex Updated Strategic Business Case, November 2015
^ WestConnex Updated Strategic Business Case, November 2015

Industry partners

    Design and construct contract: CPB Contractors and Rizzani De Eccher Joint Venture
    Operations and maintenance contract: Maintenance during construction: CPB Contractors and Rizzani De Eccher Joint Venture
    Operations and maintenance after project completion: Fulton Hogan and Egis Joint Venture
    Tolling contracts: Roadside tolling equipment: Kapsch TrafficCom Australia
    Back-office services and systems: Roads and Maritime Services

     

     

What's happening now

Local updates

To learn about work in an area or for a project, you can access a range of documents including work notifications, management plans, compliance tracking reports, maps and permits.

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FAQs See all

Sydney Motorway Corporation is committed to making a meaningful and long term contribution to the communities in which it operates by investing in community-focussed programs during construction of WestConnex.

Legacy is defined as delivering sustainable and lasting benefits to the local economy, community and natural environment.

Legacy projects will be identified and developed in consultation with the community, local councils and community groups.

The planning approval to construct each stage of WestConnex includes conditions to incorporate and deliver social and environmental outcomes including the requirement for an Urban Design and Landscaping Plan, a Social Cohesion Plan, and a Residual Land Management Plan.

Only once a year. Unlike the majority of New South Wales motorways which increase quarterly, WestConnex tolls increase annually on 1 January.  There will be a maximum increase per annum of four per cent or the consumer price index (CPI) – whichever is greater – until 2040. After that, CPI will apply. Read more about WestConnex tolls.

WestConnex has a distance-based tolling system, like the existing M7 Motorway. Motorists pay only for the sections of the motorway they use and a maximum cap applies.

Tolls will be introduced as each section of WestConnex opens to traffic. The new M4 opened to traffic in July 2017, and distance-based tolls commenced in August 2017. 

Distance based tolling will begin on the M5 East and the New M5 when the New M5 opens to traffic in early 2020.

Cars will pay one third of the heavy truck toll, reflecting the greater wear and tear trucks have on the motorway (an approach that is consistent with other Sydney motorways).

For the current toll estimates, see WestConnex tolls.