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)
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
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:
Current traffic projections*:
* 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
WestConnex grant scheme kicks goals for local communities
Past recipients of Sydney Motorway Corporation’s (SMC) Community Grant Scheme gathered at the WestConnex Centre at Sydney Olympic Park recently to celebrate the next round of...
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M4 night closures at Concord
Motorists are advised of upcoming overnight road closures on the M4 Motorway at Concord as work continues on the WestConnex New M4 twin tunnels.The M4 will be closed westbound...
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NSW Government confirms funding strategy to deliver WestConnex
The NSW Government today confirmed it will pursue the sale of a 51 per cent stake in Sydney Motorway Corporation (SMC) to help fund the final stage of WestConnex.Treasurer...
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New M4 start of tolling
Motorists are advised changed traffic conditions start next week on the widened New M4 between Parramatta and Homebush.From 12.00am Tuesday 15 August, motorists will pay a...
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Reduce your administration fee
You can reduce the administration fee when you pay your toll notice with a valid tag account before the due date.Simply link your vehicle to an existing tag account, or open a...
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Changes to Sydney Motorway Corporation Board of Directors
Sydney Motorway Corporation (SMC) today announced that Mr John Cooper has been appointed Chair after Mr Peter Brecht advised he would not renew his current term on 1 October...
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First stage of WestConnex opens
The widened New M4 is officially open to traffic, marking a major step forward in delivering Australia’s largest infrastructure project, WestConnex.In time for start of the...
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New M4 changed traffic conditions
Motorists are advised changed traffic conditions are in place with the widened New M4 between Parramatta and Homebush now open with four lanes in each direction.Acting Project...
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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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FAQs See all
New and significantly improved sections of motorway delivered as part of WestConnex will be tolled as they progressively open to traffic between mid-2017 and 2023. Visit the tolls page for more information.
The first major part of WestConnex is now open - the new M4 between Parramatta and Homebush, which will provide motorists with better access ramps, new smoother road surfaces and extra lanes in each direction. Distance-based tolls apply on the new M4. More than 80 percent between Emu Plains and Parramatta remains free.
We are building a New M5 which will help almost halve average travel times on the current M5 East and double average travel speeds during peak times. We are also upgrading the M5 East and a toll will be introduced on this motorway to account for the massive improvements in travel time and reliability motorists will experience once the WestConnex New M5 is opened.
To maintain access to Sydney Airport’s International Terminal, trips using Marsh Street ramps will remain toll free.
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.
Sydney Motorway Corporation's (SMC) Community Connections Program includes the SMC 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.
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