Tunnel boring machines (TBMs) Daphne and Beatrice are continuing on their journeys for Sydney Metro West.
The two TBMs are set to build 11km of twin metro rail tunnels between The Bays and Sydney Olympic Park, as part of the Sydney Metro West project.
Both machines relaunched from the Burwood North Station box, ready to make the 1.8km to their next destination at the North Strathfield metro station site.
Meanwhile, TBMs Betty and Dorothy were launched from the Clyde Stabling and Maintenance Facility site in the second half of 2023 and are also making their way towards Sydney Olympic Park.
Daphne, Beatrice, Betty, and Dorothy are expected to reach Sydney Olympic Park this year.
The machines spent 3.5 weeks traversing the 194m-long station box and the 145m -long-crossover cavern after breaking through at Burwood North in April.
The Sydney Metro West project will double rail capacity between Parramatta and the Sydney CBD.
Stations have been confirmed at Westmead, Parramatta, Sydney Olympic Park, North Strathfield, Burwood North, Five Dock, The Bays, Pyrmont, and Hunter Street in the Sydney CBD.
The target opening date for Sydney Metro West is 2032.
Subscribe to Trenchless Australasia for the latest project and industry news.