The Rozelle Interchange is Australia's largest road construction project and its now met the halfway mark for tunnelling.
The 21 year old Glen Iris Tunnel, just outside of Fremantle will be used as part of Perth's first east-west rail link.
The Melbourne Metro Tunnel's eastern entrance structure has been completed more than five months ahead of schedule.
Over the next six months a large drilling rig will be collecting soil samples and testing groundwater in the Blue Mountains.
Transport for NSW has announced three consortia that have been shortlisted to build the new metro railway line to Western Sydney Airport.