Chatswood to Sydenham

The Chatswood to Sydenham component of Sydney Metro City & Southwest involves the construction and operation of a 15.5 kilometre metro line from Chatswood, under Sydney Harbour and through Sydney’s CBD out to Sydenham.

Tunnelling under Sydney Harbour

A specialised tunnel boring machine (TBM) that can tunnel through rock and harbour sediment is being used to tunnel under Sydney Harbour.

Image showing Sydney tunnel depths
Image showing Sydney tunnel depths

Sydney tunnel depths

Sydney tunnel depths
Sydney Metro City & Southwest Project Update May 2016Play Video

City and Southwest project update May 2016

City and Southwest project update May 2016
Diagram showing a specialised tunnel boring machine
Diagram showing a specialised tunnel boring machine

A specialised TBM will be used to cross Sydney Harbour

A specialised TBM will be used to cross Sydney Harbour
Infographic: Retrieving a TBM at Blues Point
Infographic: Retrieving a TBM at Blues Point

How we will retrieve the TBMs at Blues Point

How we will retrieve the TBMs at Blues Point

Building the tunnels

TBMs will be used to excavate 15.5 kilometres of new twin rail tunnels between Mowbray Road, Chatswood and Bedwin Road, Marrickville.

Sydney Metro City & Southwest needs five TBMs. Two will be launched and removed from the Chatswood and Marrickville dives sites, with the fifth from Barangaroo.

Building the stations

The new underground stations on Stage 2 of Sydney Metro are designed to be as close to the surface as possible to allow customers to get in and out easily. At Crows Nest, Barangaroo, Central and Waterloo the stations will be excavated form the surface in a cut-and-cover construction method. At Victoria Cross, Martin Place and Pitt Street the station caverns will be mined out underground.

Excavating station
Excavating station

Excavating a station box

Excavating a station box
Single span cut-and-cover design
Single span cut-and-cover design

Single span cut-and-cover design

Single span cut-and-cover design
Single span mined station design
Single span mined station design

Single span mined station design

Single span mined station design
Binocular mined design
Binocular mined design

Binocular mined design

Binocular mined design

Environmental Impact Statement

The project is currently in the planning phase and the Environmental Impact Statement for the Chatswood to Sydenham section closed in late June 2016.

Indicative timeline

Construction activitiesIndicative construction timeframe
2017
2018
2019
2020
2021
2022
2023
2024
Early works
Tunnel construction
Station excavation and structual works
Services facility excavation and structural works
Tunnel fit out
Station construction and fit out
Services facility construction and fit out
Testing and commissioning

Project overview

Sydenham to Bankstown