M4 Widening

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M4 Widening

(Parramatta to Homebush)

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

Today, more than 100,000 vehicles a day use the M4. It is a notorious and frustrating bottleneck, with congestion for up to 13 hours a day just ask any motorist who sits in bumper-to-bumper traffic every day.

WestConnex M4 Widening involves 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

  • 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 statusIn construction 
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

To create a path for the tunnel, Roads and Maritime Services will need to compulsorily acquire ‘subsurface’ land. This includes land passing directly under properties. 
In accordance with the provisions of the Land Acquisition (Just Terms Compensation) Act 1991, compensation is generally not payable for subsurface acquisition unless particular circumstances as defined in the Act relating to damage to the support of property is caused.

 

Some drivers will prefer to use the faster, wider WestConnex New M4 motorway. Others will prefer to use Parramatta Road. There will always be a choice.

Using the WestConnex New M4 will allow you to bypass 28 sets of traffic lights and a level crossing on Parramatta Road between Church Street Parramatta and Concord – meaning faster, safer and more reliable trips.

Roads and Maritime Services is working to ensure WestConnex is integrated into the local road network. Some changes have already been introduced on Parramatta Road to prepare for the opening of the WestConnex New M4. 

WestConnex will have a distance-based tolling system, like the existing M7 Motorway. Motorists will 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 WestConnex New M4 will open to traffic in the coming weeks and the NSW Government has committed to a one-month toll-free period.

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 Using WestConnex.