A second TBM has officially begun tunnelling at Forrestfield, as part of the $1.86 billion METRONET Forrestfield-Airport Link project.
The Forrestfield-Airport Link’s two tunnels will be constructed with 54,000 concrete segments. A Forrestfield warehouse has been transformed into a facility to batch the concrete and create segments to line the two tunnels.
Emergency egress shafts provide safe exit points in the event of an emergency, and access to the Forrestfield Line's twin-bored tunnels for maintenance,
With TBM Grace's journey well underway, and TBM Sandy set to start tunnelling later this month, activity across all sites is ramping up.
With TBM Grace now tunnelling and Sandy soon to launch, production of tunnel segments has ramped up over the past month.