Overview of our tunnels work

We are building:

  • Twin tunnels under Yarraville between the West Gate Freeway and the Maribyrnong River
  • Entry and exit portals where the tunnels connect with surface roads
  • Ventilation structures at each tunnel exit to remove air from inside the tunnels
  • Walking and cycling paths on Hyde Street, Harris Street, Maribyrnong Street and a bridge over Whitehall Street
  • New landscaped open space in Altona North and Footscray
  • Freeway Management System to support good traffic flow and safety
  • Tunnel safety features for smooth operation of the tunnel, including automatic detection for over-height trucks, fire systems and emergency access and exits.

In addition to construction in the Tunnels, see what’s happening in the West Gate Freeway and Port to City.

Map

Tunnels construction map.

Key works in the area

Instructions: Open the accordion feature below to view related information.

There will be tunnel entries and exits in the West Gate Freeway, and near Whitehall Street in Yarraville.

The city-bound tunnel entry is just west of Williamstown Road and exits near Whitehall Street. The outbound tunnel entry is near Whitehall Street and will exit just east of Millers Road on the West Gate Freeway.

The start and end of each tunnel is being built using the ‘cut and cover’ method. This involves excavating a trench then covering it with a concrete deck to form a roof. This is where the tunnel boring machines (TBMs) start and end their journey.

Tunnel portal located in the West Gate Freeway.

Construction compounds provide a base for workers, equipment and machinery. The main base for tunnel construction is at the Project’s northern portal construction site on Whitehall Street, Yarraville. The Tunnel Boring Machines (TBMs) will be launched here and a soil management facility set up to deal with soil generated by tunnelling.

To minimise disruption we are:

  • Fitting noise covers to noisy machinery and equipment
  • Using covered conveyors, sheds and trucks to reduce dust
  • Fencing and screening the site for safety
  • Reducing traffic in and out at peak times to limit traffic disruption.

We use best practice techniques at our construction compounds and we:

  • Meet all requirements for managing noise, dust and traffic
  • Give our neighbours advanced notice about what to expect during works
  • Reinstate or improve compound areas after construction
  • Provide parking for workers.

Two state-of-the-art Tunnel Boring Machines (TBMs) will build the twin tunnels. These machines use the latest tunnelling technology and are custom designed and built to suit ground conditions in Melbourne’s west.

The TBMs start their journey at the northern portal and move south-west towards the southern portals in the West Gate Freeway. Work will start on the 4 kilometre outbound tunnel first, closely followed by the 2.8 kilometre inbound tunnel. The longer tunnel will take around 18 months to bore.

While the TBM bores through the earth, a mobile factory behind it installs a concrete lining – forming the walls, roof and base of the tunnel. Behind the TBM, crews of up to 20 people work to build the road surface and install electrics, ventilation and safety systems. Learn more about tunnel boring machines.

We are currently working to find a long-term solution to safely manage the rock and soil created during tunnelling. Visit our soil management page for more information.

When we are ready to start tunnelling, residents living close to the tunnel alignment will be notified.

Infographic highlighting key information about construction of the tunnel

Infographic with key tunnelling information.

A 600 metre section of the North Yarra Main Sewer under Whitehall Street was diverted so that we can build the tunnel.

This work began in 2018 and was completed in September 2019.

Read more about diverting the North Yarra Main Sewer.

Work hours

Tunnelling operations will take place 24 hours a day, seven days a week. The TBMs will work around the clock, and the main tunnelling construction compound at Whitehall Street will be busy both day and night.

Upcoming work

We will also keep people informed of activities taking place in their local area by:

  • Dropping newsletters and works notifications in your letterbox
  • Door knocks or street meetings before major works
  • News and updates on social media

Why tunnel?

A tunnel allows a freeway connection to be built in established residential and commercial areas with far fewer impacts and many benefits including:

  • moving through traffic away from homes
  • reducing traffic noise on local streets
  • reducing trucks on local streets
  • reducing disruption during construction as much of the work happens below ground
  • supporting urban redevelopment opportunities by protecting land on the surface.

More information

For more information, contact us on 1800 105 105.

We have a team that is dedicated to working with the community. They are available 24 hours a day, seven days a week to answer any questions or concerns.

Construction overview fact sheet – Tunnels [PDF, 1.4 MB]

The fact sheet is also available in Arabic (PDF, 1.08MB), Chinese (PDF, 1.4 MB), Greek (PDF, 1.4MB), Italian (PDF, 1.4 MB), Vietnamese (PDF, 1.4 MB)