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.
Fit-out works are ongoing at both platform and concourse level. At the northern end of the station building, in-wall services are approximately 25 per cent complete, and the southern end in-wall services are just days away from completion. Installation of external cladding is also underway.
Also at platform level, a number of "pods" (aka. rooms) are being fitted-out, with external cladding scheduled to commence late-October. The pods are located under the main escalators and will be used for equipment storage.
The portal building, located at the tunnel entry/exit, has become quite a landmark, with the three storeys reaching 12 metres in height. While works on the roof sheeting continue, all internal steel stairs have now been installed.