Sydney Metro Tunnels Begin Under-Harbour Train Testing

In a historic first for New South Wales’ transport sector, trains are now running beneath Sydney Harbour as the Sydney Metro City & Southwest project enters its next phase. The project features 15.5-kilometer twin metro railway tunnels that extend the Metro Northwest Line from Chatswood Station to Sydenham Station.

The new metro trains are currently undergoing a testing and commissioning program within the twin tunnels. CPB Contractors and UGL, both part of the CIMIC Group, are responsible for delivering the Line-wide Works for the Sydney Metro City & Southwest project. The first stage of testing involves low-speed trials, with manually driven trains reaching a top speed of 25 kilometers per hour. Following this, high-speed testing will be conducted, with trains reaching a maximum speed of 110 kilometers per hour.

In addition to speed tests, each train will undergo acceleration and braking assessments on the newly constructed track. A series of system checks will also be performed to ensure the trains can operate reliably under standard conditions. On-track train testing and commissioning are slated to continue throughout 2023, with passenger services set to begin in Sydney’s Central Business District in 2024.

Brett McGrane, the Project Director, expressed gratitude for the hard work and dedication of all those involved in reaching this milestone. He highlighted the team’s achievements, including expanding the operational capacity of the Rouse Hill stabling yard, constructing and fitting out the 15.5-kilometer twin tunnels, powering on the system, and completing extensive operational and safety planning, as well as testing and commissioning activities.

Once passenger services commence in 2024, travelers will enjoy a fast and reliable metro service. Commuters will be able to reach Chatswood Station from Central Station in just 15 minutes, Sydenham Station from Martin Place Station in 11 minutes, and Barangaroo Station from Victoria Cross Station in North Sydney in a mere three minutes.

The railway crossing below Sydney Harbour is anticipated to transport more people across the harbor during peak hours than the combined capacities of the Sydney Harbour Bridge and Sydney Harbour Tunnel. This significant infrastructure project will improve connectivity, reduce travel times, and enhance the overall efficiency of Sydney’s public transport network.