M4-M5 Link Tunnels

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M4-M5 Link Tunnels

(Haberfield to St Peters)

Also referred to as M4-M5 Link Mainline Tunnels.

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

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. 

    Project history 
     

    • February 2019 – The M4-M5 Link Modification was approved
    • March 2019 – Tunnelling started from Haberfield
    • 26 November 2018 – The M4-M5 Link Construction Environmental Management Plan (CEMP) was approved allowing major construction to commence
    • October 2018 – Site establishment works began

    • 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.
    • 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. 
    • 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.

     

    Project stats

    Current status: Approved
    Construction start: 2018
    Open to traffic (pending planning approval): Early 2023^
     

    ^ WestConnex Updated Strategic Business Case, November 2015
    ^^ Between Haberfield and Rozelle

    Industry partners

      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

    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

    For each WestConnex project, a series of documents including details of the measures to appropriately manage and reduce the impact of the project on local communities. These include: 

    • The Environmental Impact Statement (EIS) – the EIS explores the potential environmental impact and outlines measures to manage and reduce this impact based on best practice and expert advice. 
    • The Submissions Report – this responds to all feedback received on the EIS during exhibition. It provides additional mitigation measures needed in response to new information, additional assessment or community feedback. 
    • The Conditions of Approval – in approving each project, the NSW Minister for Planning issues a range of conditions that must be adhered to during and after construction, to ensure impact of the project is mitigated. 
    • The Construction Environmental Management Plan and sub plans – before we start major work, these are prepared to provide a detailed approach to the management of environmental issues. The Department of Planning and Environment must approve these before major construction work can start. They build on the mitigation and management measures established in the EIS, the Submissions Report and Conditions of Approval.

    We always notify local communities before we start a new section of work and before we do any out-of-hours work. 

    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. 

    The former Rozelle Rail Yards adjacent to the City West Link will be used for the construction of the M4-M5 Link Rozelle Interchange which will be built almost completely underground. Up to 10 hectares of new open space and improved pedestrian and cyclist connectivity will be created where the Rozelle Rail Yards currently is today. The site will also be used to establish permanent infrastructure such as a Motorway Operations Complex and ventilation facility. Construction for the Rozelle Interchange is expected to start in 2019 and open to traffic in late 2023.