Work on the METRONET Thornlie-Cockburn Link is steaming ahead, with the Mandurah train line on track to reopen January 15.
Almost 500 personnel have worked around the clock to remove three kilometres of rail tracks from the existing rail corridor between Cockburn Central Station and Glen Iris Tunnel to make way for the new Thornlie-Cockburn Link tracks.
As part of these works, more than 13,000 tonnes of ballast has been removed.
Work is now well underway to install the new rail tracks with more than five kilometres to be laid by the end of the shutdown.
Overhead line equipment is currently being installed on the Mandurah Line heading to Perth with track, rail and sleeper installation underway on the line heading to Cockburn Central.
"We are now halfway through the biggest public transport shutdown we have ever had in Perth," Transport minister Rita Saffioti.
"I'd like to thank passengers for their patience, and everyone involved in the project, from the workers on the ground to our bus drivers, for all of their hard work during this time.
"We know it is frustrating and disruptive for some people, and we apologise for this."
When the Mandurah train line opens, public transport fares will be capped at two zones.
This means no matter where a passenger is travelling to or from, they will pay no more than $4.90 cash or $3.92 on a SmartRider with Autoload.
This means passengers travelling from Mandurah can save up to $6.40 on a single journey with their SmartRider.
For more information, https://www.transperth.wa.gov.au/Track-Closures/Mandurah-Line-Shutdown