M4 Widening
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M4 Widening
Creating 2000 jobs
to widen M4
Easing congestion in Clyde,
Granville & Auburn
More reliable trips
for businesses
Creating 2000 jobs
to widen M4
Easing congestion in Clyde,
Granville & Auburn
More reliable trips
for businesses
(Parramatta to Homebush)
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
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:
Current status:
Construction start:
Open to traffic:
^ 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
Community partner Wests Tigers establish Autism Friendly space for families at BankWest Stadium
Following the successes of last year, WestConnex Community Partner the Wests Tigers has established a new autism friendly space for families for upcoming home games at BankWest...
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Reconciliation
Our Reconciliation Action Plan (RAP) is part of our broader strategy for Aboriginal and Torres Strait Islander investment in communities we are working in. It has been endorsed...
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Applications open for the latest round of WestConnex community grants
Community groups and organisations are being encouraged to apply for the latest round of Sydney Motorway Corporation’s (SMC) Community Grant Scheme which supports local...
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M4 night closures continue
Another round of night closures of the M4 Motorway is planned for this week as work continues to widen and increase capacity of the Motorway as part of WestConnex.The M4 is...
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Community Partner Wests Tigers wins 2018 NRL club community program
WestConnex community partner, Wests Tigers have been awarded the 2018 NRL Club Community Program of the Year, announced as part of the NRL’s national community awards.Wests...
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As Sydney sleeps, WestConnex work ramps up
As the sun sets across our great city and most workers call it a day, construction activity ramps up on one of the southern hemisphere’s biggest infrastructure...
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WestConnex grant drives training at The Children’s Hospital, Westmead
Nursing and medical staff at the Paediatric Intensive Care Unit of The Children’s Hospital at Westmead are benefiting from the delivery of new simulation technology which is...
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Community partner Wests Tigers launch NRL-first autism friendly room
In an NRL first, WestConnex community partner Wests Tigers have established a new autism friendly space at all ANZ Stadium home games, for children with autism and their...
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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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Photos & Videos
WestConnex supporting GIANTS Care
WestConnex: 2017 a year in review
New M4: Concord Road girder lift
WestConnex - faster, safer, more reliable
Engineers Australia Experience It! conference supported by WestConnex
Keeping our city moving
The Hulk finishes M4 Widening work
M4 Widening equipment goes west
FAQs See all
WestConnex projects will open to traffic in stages between 2017 and 2023. See our Interactive map.
The WestConnex Community Connections Program includes the WestConnex Community Grant Scheme, which provides grants of up to $10,000 to local groups such as such as schools, sporting associations and social enterprises located in and around the WestConnex project area.
Grant applications are assessed against guidelines, which consider areas including community legacy, connecting communities, building capacity and helping people.
Traffic modelling tells us the expected demand for WestConnex and the number of traffic lanes needed. The motorway has been designed to meet traffic demand now and in the future.
The number of lanes varies across the project:
- New M4: the New M4 has been widened from three to four lanes in each direction between Parramatta and Homebush. The New M4 Tunnels between Homebush and Haberfield will be three lanes in each direction.
- New M5: when the tunnels open, there will generally be two lanes in each direction between Kingsgrove and St Peters. The tunnels can accommodate three lanes in each direction in future, with additional approvals needed for this change.
- M4–M5 Link Tunnels: The M4-M5 Link Tunnels will provide twin underground tunnels with four lanes in each direction between Haberfield and St Peters.
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