
Road
Tunnel
In construction
In planning

Project Timeline
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:
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 and GIANTS kicking goals for western Sydney communities
Sydney Motorway Corporation’s (SMC) WestConnex community partnership with the GIANTS will reach new heights this year with the club’s successful Stand Tall workshops to be...
Read more

Horn of Africa migrants and refugees in western Sydney buoyed by expansion of swim safety program
Swim program, “Swim, Survive and Socialise” for the children of East African migrants and refugees living in western Sydney has been expanded, empowering a new generation...
Read more

Applications open for community grants
Community groups and organisations are being encouraged to apply for the next round of Sydney Motorway Corporation’s (SMC) Community Grant Scheme which supports local...
Read more

Community partnership with Wests Tigers a roaring success
The Wests Tigers’ community work off the field to deliver outreach programs for people in Western Sydney has doubled in less than a year, following its successful partnership...
Read more

WestConnex powers Sydney's employment potential from the ground up
Sydney’s massive infrastructure boom is generating a wave of employment opportunities across the city, with projects like WestConnex creating a skills legacy for future...
Read more

استخدام طريق M4 الجديد
طريق M4 الجديد مفتوح بين باراماتا و هومبوش وهو الآن يتكون من 8 حارات. أنه يتجاوز 28 مجموعة من إشارات...
Read more

有關新M4的使用事宜
新的M4高速公路興建於Parramatta和Homebush之間,並拓寬至八條車道。 它繞過Parramatta...
Read more

새로 확장된 M4 이용하기
M4가 파라마타(Parramatta)와 홈부쉬(Homebush) 사이에 새로 확장개통되어서 현재 8차선으로 운영 중입니다. M4는 가장 빠른 주행을 위해...
Read more
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.
- Loading Data...
FAQs See all
Sydney Motorway Corporation (SMC) is committed to supporting western Sydney communities through key community partnerships and programs that provide long term benefits to those who need it most.
SMC’s community partnerships with the GWS Giants and Wests Tigers will ensure positive and lasting outcomes for thousands of people based in western Sydney through the delivery of targeted community programs.
These programs deliver positive outcomes in health, education and skills, and harmony outcomes.
The community partnerships are one part of SMC’s Community Connections Program, which also includes the SMC Community Grant Scheme.
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.
Community or social cohesion programs will be implemented to enhance the cohesion in precincts directly affected by WestConnex. Initiatives may include enhancement of open space, accessibility of public areas, active community involvement and engagement, support of community initiatives and provision of grants to eligible groups in the local community.
Stay connected
We speak your language
What is WestConnex? (in your language)