In construction

In planning

Project Timeline

New M5

(Beverly Hills to St Peters)

Duplicating the M5 East from King Georges Road Interchange Upgrade at Beverly Hills to a new interchange at St Peters. 

The New M5 will provide twin underground motorway tunnels, nine kilometres long, from Kingsgrove to a new St Peters Interchange at the site of the old Alexandria landfill facility. The St Peters Interchange will provide motorists with connections to Alexandria and Mascot. It also includes connections to the future Sydney Gateway and M4-M5 Link. The New M5 tunnels will be marked for two lanes in each direction, with capacity to add a third and also include underground connection points for the M4-M5 Link and the proposed F6 Extension.  

Local streets and intersections around the St Peters interchange are also being upgraded to ensure safe and efficient connections for the New M5.

Environment and planning The New M5 received NSW planning approval in April 2016. The project had the potential to impact on some species listed under the Commonwealth Environmental Protection and Biodiversity (EPBC) Act 1999. This meant it needed approval from the Australian Government Minister for the Environment, in addition to environmental and planning approvals required under State legislation. Australian Government approval was given on Monday 11 July 2016 and work started later that month.


The CPB Dragados Samsung C&T Joint Venture (CDSJV) Sustainability Policy can be viewed here

The CPB Dragados Samsung C&T Joint Venture (CDSJV) New M5 Sustainability Plan can be viewed here 

Project history

  • December 2019: TfNSW commences work on the $3m Linear Park Enhancements along the M5 corridor in Kingsgrove, Bexley and Beverly Hills.
  • November 2019: More than 1km of new lanes on the M5 at Beverly Hills opens to traffic as part of enabling works for the New M5, increasing capacity to 3 lanes in each direction along this section.
  • November 2019: 17 million hours worked on the New M5 to date.
  • October 2019: The New M5 Public Art Program Canal to Creek is announced by TfNSW in consultation with WestConnex Transurban.
  • October 2019: Construction of the 10 bridges on the New M5 is completed with the installation of a 30 tonne beam on the Gardeners Road bridge connecting Mascot and St Peters Interchange.
  • August 2019: The Hunter Precast Yard which employed over 150 workers cast the last of 579 bridge segments for the New M5 St Peters Interchange.
  • July 2019: WestConnex works with local schools along the New M5 project corridor to plant over 600 hundred trees within their grounds as part of Schools Tree Day.
  • March 2019: Landscaping works to plant more than 650,000 trees, shrubs and plants at St Peters Interchange commences.
  • January 2019: Ambient air quality monitoring along the M5 corridor commences with live monitoring and monthly reports available on the WestConnex Air Quality page.
  • December 2018: Tunnelling completed.
  • December 2018: Campbell Street construction reaches halfway mark. 
  • November 2018: Breakthrough between Arncliffe and Bexley in the Westbound Tunnel.
  • October 2018: The Sydney Park Road/Euston Road roundabout replaced with a signalised intersection. This marks the completion of the first stage of works at this intersection. 
  • August 2018: Installation of the first bridge segments at the St Peters Interchange. Almost 600 concrete segments will be used to build nine bridges which will form part of the interchange. 
  • April 2018: The first girder for the new Campbell Road bridge over Alexandra Canal was lifted into position.
  • March 2018: First tunnel breakthrough.
  • February 2018: First traffic switch for motorists travelling towards the city on M5 East motorway at Kingsgrove.
  • February 2018: Four million work hours recorded on New M5 project.
  • December 2017: First 'Super T' girders craned into position at St Peters Interchange to build tunnel portals.
  • October 2017: Partial approval of Main Urban Design Landscape Plan.
  • July 2017: Approval of Retaining Walls Urban Design Landscape Plan.
  • May 2017: Tunnelling started at the Kingsgrove construction site.
  • April 2017: Heritage Salvage Catalogue published with 460 salvaged items offered to the community free of charge.
  • April 2017: Urban Design and Landscape Plan exhibition.
  • February 2017: Tunnelling started at the Arncliffe and Bexley construction sites.
  • November 2016: Tunnelling started at the site of the St Peters Interchange.
  • July 2016: The New M5 project received approval from the Commonwealth Department of the Environment under the Environment Protection and Biodiversity Conservation (EPBC) Act 1999.
  • April 2016: Planning approval for the New M5 project was received from the NSW Minister for Planning.
  • March 2016: A Submissions and Preferred Infrastructure Report was prepared in response to submissions received during the EIS exhibition period and lodged with the Department of Planning and Environment.
  • November 2015 to January 2016: The New M5 Environmental Impact Statement (EIS) was exhibited for public comment.
  • September 2015: The CPB Contractors, Dragados, Samsung Joint Venture was selected as the preferred tenderer for the New M5.
  • November 2014: The planning application for the New M5 was lodged.
  • November 2014: A shortlist of consortia to construct the New M5 was announced, with a request for tender issued shortly after.
  • September 2014: Expressions of interest for contractors to design and construct the New M5 were called.


Project stats

Project value: $4.335 billion^
Current status : In construction 
Construction start: July 2016
Open to traffic: 2020

^ WestConnex Updated Strategic Business Case, November 2015
^^ Awarded through the design and construct contract

Industry partners

    Design and construct contract: CPB Contractors, Dragados and Samsung Joint Venture 
    Operations and maintenance contract: During operations: fulton Hogan and Egis Joint Venture
    Tolling contracts^^: Roadside tolling equipment: Kapsch TrafficCom Australia,
    Back-office services and systems: GLIDe

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

We undertake noise modelling for all of our projects, to predict noise levels after the project opens to traffic.

On some sections of WestConnex, new and upgraded noise walls will be installed to reduce the impact of traffic noise. Sometimes noise walls are not practical or may not be enough to effectively mitigate the expected noise. When this happens, properties may also be eligible for acoustic treatments to reduce road traffic noise. Our teams discuss this option directly with relevant property owners.

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. 

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.