M4-M5 Link

Explore Map

Road

Tunnel

In construction

In planning

Project Timeline

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 is the final and most critical component of WestConnex, featuring twin mainline 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 project will also include an interchange at Rozelle with provision for a future connection to the Western Harbour Tunnel and BeachesLink. It will include 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.

Environment and planning 

The M4-M5 Link received NSW planning approval in April 2018.

Project history 

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.

  • Loading Data...

No local updates found.

FAQs See all

By delivering the M4–M5 Link in underground tunnels and locating the Rozelle interchange at the disused Rozelle Rail Yards, we are minimising disruption in local communities including the need for property acquisition. 

Using Rozelle Rail Yards provides a great opportunity to turn this land into much-needed, new green space for the community.

We fully recognise the importance of Sydney Park and the investments that the City of Sydney Council and others have made in recent years.

A strip of land owned by Roads and Maritime Services adjacent to Sydney Park is being used to widen Euston Road as part of local road upgrades. This is not part of Sydney Park.

As outlined in the City of Sydney’s own management plan for Sydney Park, this land is dedicated road space and has been subject to a long-standing road widening reservation.

A small boundary strip, adjacent to the road reserve, is also required for the local road widening, however this is more than offset by the additional 8.5 hectares of open green space being created at St Peters Interchange.

Two hectares of this open green space will be directly connected to Sydney Park via a land bridge over Campbell Road.

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.