M4-M5 Link

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M4-M5 Link

(Haberfield to St Peters)

Tunnels connecting to the New M4 at Haberfield and New M5 at St Peters via Rozelle.

The M4-M5 Link project includes an interchange at Rozelle with provision for a future connection to the Western Harbour Tunnel and BeachesLink. It also includes an underground tunnel from the Rozelle Interchange to Victoria Road near Iron Cove Bridge, known as the 'Iron Cove Link'.

The interchange in Rozelle will be mostly underground and located at the site of the old Rozelle Rail Yards. By building the interchange mostly underground, the project will deliver new active transport options in Rozelle and up to 10 hectares of new green space. The M4-M5 Link will also provide an additional 2.5 hectares of green space in St Peters.

Current status

Planning on this project is currently underway.

This is being supported by a community and stakeholder engagement program

M4-M5 Link Environmental Impact Statement

The M4-M5 Link Environmental Impact Statement public exhibition has now closed. During the 60-day consultation period, stakeholders were encouraged to review the EIS and make a formal submission about the project to be considered by the Department of Planning and Environment as part of its assessment of the project.

We anticipate the submissions report to be made publicly available early 2018. 

Environment and planning 

In January 2016, we lodged a State Significant Infrastructure Application Report for the M4-M5 Link. This was the first step in the planning approval process. In March 2016, the Department of Planning and Environment issued the Secretary’s Environmental Assessment Requirements (SEARs) for the project. The SEARs define comprehensive environmental assessment requirements which are addressed in the Environmental Impact Statement (EIS). 

Project history 

  • 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 Addendumwhich 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. 
  • July 2016: Premier Mike Baird announced key features of the Rozelle Interchange, including up to 10 hectares of new green space and an underground road link between Rozelle and the Iron Cove Bridge.
  • 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. 

Project stats

Project value: $7.247 billion^
Current status: Planning
Construction start (pending planning approval): 2018
Open to traffic (pending planning approval): 2023^
Current traffic projections*: 105,000^^

* 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

Industry partners

    Design and construct contract: Tender process underway
    Operations and maintenance contract: Commitment deed in place with Fulton Hogan and Egis Joint Venture
    Tolling contracts: Tender process yet to begin

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

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.

A new interchange will be built at the site of the old Alexandria Landfill in St Peters. This will provide connections to the New M5 in 2020, and the M4–M5 Link and Sydney Gateway when these new roads are completed in 2023. 

Local streets and intersections around the St Peters Interchange will be upgraded to ensure safe and efficient connections for the New M5, and cater for future traffic growth.

This includes an additional road crossing over the Alexandra Canal and supporting road changes to ease congestion on Ricketty Street Bridge. A new signalised pedestrian crossing, wider footpaths and potential off-street parking will mean safer access to St Peters Public School. Locals will also enjoy 12 kilometres of pedestrian and cycle paths, and a new pedestrian and cycle bridge over Alexandra Canal linking Mascot Town Centre and Sydney Park.

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.