M4-M5 Link Tunnels
The M4-M5 Link is being delivered in two stages:
- Stage one - construction of the M4-M5 Link Tunnels between the New M4 at Haberfield and the New M5 at St Peters and stub tunnels to the Rozelle Interchange. This stage is being managed by Sydney Motorway Corporation.
- Stage two - construction of the Rozelle Interchange and Iron Cove Link. This stage is being managed by Roads and Maritime Services.
The M4-M5 Link Tunnels project is the final and most critical component of WestConnex, featuring twin tunnels between the New M4 at Haberfield and the New M5 at St Peters. Each tunnel will be approximately 7.5 kilometres long and able to accommodate up to four lanes of traffic in each direction. The M4-M5 Link Tunnels will be delivered as a stand-alone project, and provide an additional 2.5 hectares of green space in St Peters.
Environment and planning
The M4-M5 Link Tunnels received NSW planning approval in April 2018.
- 12 - 26 September 2018 - The M4-M5 Link Modification Report was on public exhibition for a period of 14 days.
- 13 June 2018 - Lendlease Samsung Bouygues Joint Venture (LSBJV) was selected as the preferred tenderer for construction of the M4-M5 Link Tunnels.
- 27 April 2018 - Planning approval for the M4-M5 Link project was received from the NSW Minister for Planning.
- 5 February 2018 - The M4-M5 Link Submissions and Preferred Infrastructure Report released.
- 18 August - 16 October 2017 - The M4-M5 Link Environmental Impact Statement was on public exhibition for a period of 60 days.
- 18 August 2017 - M4-M5 Link feedback report released.
- May - June 2017 - Community information sessions hosted across the M4-M5 Link project area, to support the release of the M4-M5 Link Concept Design.
- 12 May 2017: M4-M5 Link Concept Design released for community feedback.
- March 2017: Sydney Motorway Corporation lodged the M4-M5 Link State Significant Infrastructure Report Addendum 2.
- 11 November 2016: Minister for Roads Duncan Gay announced new design features for the M4-M5 Link, with potential for the M4-M5 Link twin tunnels to be completed early, capacity increasing from three to four lanes in each direction and exit and entry ramps at Camperdown removed.
- 15 November 2016: The Community Feedback Report containing community feedback and ideas gathered through consultation in July and August 2016 was released.
- 21 November 2016: Expressions of interest for contractors to design and construct the M4-M5 Link main tunnel works were called.
- September 2016: Sydney Motorway Corporation lodged the M4-M5 Link State Significant Infrastructure Report Addendum, which includes the Rozelle interchange and Iron Cove Link.
- August 2016: Community ideas sessions hosted across the M4-M5 Link project, supported by an online collaborative map.
- Early 2016: Geotechnical and other surveys and investigations underway to inform the early design options for the project.
- Early 2016: Consultation with key stakeholders started.
- March 2016: The Department of Planning and Environment issued the Secretary’s Environmental Assessment Requirements for the project.
- January 2016: Sydney Motorway Corporation lodged the M4-M5 Link State Significant Infrastructure Application Report, which is the first step in the planning approval process.
- November 2015: WestConnex Updated Strategic Business Case published, including a proposal for the M4-M5 Link.
- September 2013: WestConnex Strategic Business Case – Executive Summary published, including an early proposal for the M4-M5 Link.
Current status: Approved
Open to traffic (pending planning approval): Early
* Based on WestConnex Road Traffic Model V2.1, WestConnex Updated Strategic Business Case, November 2015
^ WestConnex Updated Strategic Business Case, November 2015
^^ Between Haberfield and Rozelle
Design and construct contract: Lendlease Samsung Bouygues Joint Venture
Operations and maintenance contract: Commitment deed in place with Fulton Hogan and Egis Joint Venture
Tolling contracts: TBA
What's happening now
M4-M5 Link Tunnels
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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
WestConnex is generating more than 18 hectares of new open space for communities in the inner west.
We sometimes use parks and other government-owned land during construction. This helps us to avoid the acquisition of private property. When we use green space during construction, we always try to return it for community use when construction is finished.
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.
WestConnex is able to meet stringent air quality standards in the tunnels and the surrounding community using state-of-the-art ventilation and tunnel design. Filtration is not needed as it would not provide any measurable improvement to the air quality in the surrounding community.
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