Melbourne, meet Meg, Joan, Millie and Alice.
The four gigantic tunnel-boring machines that will be put to work beneath the CBD this year have been named after "groundbreaking women" following a public naming competition which garnered 1100 suggestions.
The first of them, named in honour of former Labor premier Joan Kirner, was on site at Arden station in North Melbourne on Tuesday, wrapped in plastic and ready to be assembled.
Three other machines are being shipped from overseas and are due here soon.
They have been named after Meg Lanning, captain of the Australian women's cricket team; Millie Peacock, Victoria's first woman MP; and Alice Appleford, who won the military Medal for Gallantry in World War One.
Lanning was at the Arden construction site where one of five new underground railway stations are being built, to inspect the first machine on Tuesday.
She said it was a huge honour to have one of the machines named after her.
"Melbourne is one of the sporting capitals of the world and there are a lot of events coming up, so this infrastructure is certainly going to help with the fans being able to access all the sport that's in Melbourne," Lanning said.
She admitted she was unaware of the tradition of naming tunnel-boring machines after women until she got a phone call informing her that one was set to bear her name.
The tradition reportedly dates back to the 1500s, when miners and military engineers prayed to Saint Barbara before using explosives.
Tunnelling is not expected to begin until the middle of the year. It will start at the two tunnel portals in South Kensington and South Yarra, and the machines will eventually meet beneath Swanston Street in the CBD.
The $11 billion tunnel is now expected to open in 2025, one year ahead of schedule.
The nine-kilometre twin track rail tunnel will connect the congested Sunbury line in the north-west with the Cranbourne/Pakenham lines in the south-east.
Once it opens, those lines will be removed from the City Loop, freeing up capacity for dozens of extra peak-hour services an hour.