The Forrestfield construction site is divided by Dundas Road, near Maida Vale Road. To the west of Dundas Road, is the dive structure where the two tunnel boring machines (TBMs) began tunnelling in August and October 2017. The dive structure is 260m long and up to 22m wide.
To the east of Dundas Road is infrastructure vital to the operation of the TBMs. The site is operating 24 hours a day to support tunnelling activities, including processing excavated soil and treating water for re-use in the tunnelling process.
The Dundas Road realignment is on track to open in August, with drainage pits being installed and intersection works due to be completed over the coming weeks.
Traffic management is currently in place as part of construction for the northern and southern intersections.
Once open, the currently divided Forrestfield construction site will be joined. The existing Dundas Road will be closed south of Maida Vale Road and north of Imperial Street. View a map of the changes to Dundas Road.
The 300m long retaining wall for Forrestfield Station is almost completed, with 89 of the 93 panels in place. The remaining four panels will be installed once the multi-service vehicles no longer require access to the tunnels. More than 100 counterforts are being used to keep the 8.2m high wall securely in place. The counterforts support the 18 tonne wall panels, as well as the backfilling which is required to raise the ground level at the station by up to 6m.
Work is also continuing south of the site with the installation of services for the stowage yard. The stowage yard will be the end of the Forrestfield Line, where trains will be cleaned and maintenance will be undertaken. Excavation and service relocation for the stowage building is ongoing.