Tunnelling at Forrestfield, the site that hosts the infrastructure vital to tunnel boring machine (TBM) operations, began in August (TBM Grace) and October (TBM Sandy) 2017. The site is operating 24 hours a day to support tunnelling activities, including processing excavated soil and treating water for reuse in the tunnelling process.
Forrestfield Station is starting to take shape with the construction of the station’s platform and concourse levels now in progress.
Both platform foundation walls have been completed, as have the escalator and lift pit walls. Backfilling has commenced while hydraulic services installation is being finalised.
At concourse level, seven separate concrete pours have been completed for the station’s 130m-long concourse slab. The slab is expected to be finalised by the end of March, by which time a total of 300 cubic metres of concrete will have been poured. Installation of steel, to form the station roof, will commence shortly.
South of the station, brickwork has been completed on the stowage building where trains will be stored and maintained when not in use. Pre-cast concrete planks, which form the stowage platform, are currently being installed.
At the northern end of the site work on the portal building is progressing well with plans to start installation of building services in the next few weeks. Casting of the main slab for the portal building will follow along with construction of lift and stair shafts. The portal building houses the controls to operate and maintain the tunnels.
Works to reinstate Dundas Road, following the incident that occurred at the first tunnel-to-tunnel cross passage in September, have been completed. Survey works have begun in the area to identify any underground infrastructure that needs to be considered while planning of the final road design for the station's precinct is undertaken.
View a map of how we expect the area around Forrestfield Station to look post-construction.