Clyde Stabling and Maintenance Facility

Supporting services and Infrastructure

A stabling and maintenance facility will be located in the Clyde and Rosehill industrial estate bounded by James Ruse Drive, Western Motorway (the M4), Unwin Street and Shirley Street.

Inside the facility, a traction substation will provide power to the metro line and a water treatment plant will treat and recycle all wastewater from the tunnels, stations and underground facilities. The facility will also house offices, parking and storage.

Planning update

Following a design refinement process, Sydney Metro proposed to modify the approval for Clyde stabling and maintenance facility. The proposal involved relocating the tunnel dive structure to the north-east avoiding the need to relocate a major Sydney Water sewer main that services the local area.

The modification also proposed to realign Kay and Unwin streets through the site providing safe and reliable pedestrian and cyclist access. The footbridge and platforms within the decommissioned Rosehill Station would also be removed to facilitate the work.

The modification report was on public exhibition from 24 November to 8 December 2021 and has now been approved by the Department of Planning, Industry and Environment.

Construction 

In February 2022, Sydney Metro awarded Gamuda Australia and Laing O’Rourke Consortium (GLC) the contract to deliver nine kilometres of twin metro rail tunnels between Westmead and Sydney Olympic Park.

At Clyde these works include:

• site establishment and demolition at all areas – installing hoarding, protecting and/or relocating utilities, conducting investigations, installing staff facilities and services to the construction site, installing piles and initial excavation
• bulk earthworks
• constructing retaining structures, drainage and utilities corridor
• constructing road upgrade on Unwin Street
• removing excavated material – via trucks through Parramatta Road.

Within the site there is the Rosehill services facility and Clyde dive.

At Rosehill services facility these works include:

• excavating a services facility box – to a depth of 28 metres (approximately 10 storeys)
• launching four tunnel boring machines from the services facility box, two towards Sydney Olympic Park and then relaunched towards Westmead
• providing tunnelling support – storage of excavated material, ventilation, emergency egress, grout batching and water treatment
• constructing a tunnelling and infrastructure academy.

At Clyde dive these works include:

• excavating and constructing the tunnel dive and portal structure connecting the underground metro line to the stabling and maintenance facility
• excavating a temporary access shaft to provide access to construct the running spur tunnels and junction cavern connecting the services facility box to the metro line – using roadheaders and/or excavators with rock hammer attachments.