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First look inside Chatswood Dive

21.01.2021

A view from behind showing a man in orange high-vis shirt and hard hat looks on at the Chatswood Dive Cassette Structure with his hands on his hips. A view from behind showing a man in orange high-vis shirt and hard hat looks on at the Chatswood Dive Cassette Structure with his hands on his hips.
Construction workers on a forklift working inside the Chatswood dive site which was the launch pad for two of the tunnel boring machines (TBMs) on the City & Southwest project. Construction workers on a forklift working inside the Chatswood dive site which was the launch pad for two of the tunnel boring machines (TBMs) on the City & Southwest project.
A Sydney train passing by the Chatswood Dive site. There are high rise buildings in the background. A Sydney train passing by the Chatswood Dive site. There are high rise buildings in the background.
A view from above looking down into the Chatswood Dive cassette structure and the start of the metro train tunnel. A view from above looking down into the Chatswood Dive cassette structure and the start of the metro train tunnel.
A view inside the cassette structure at Chatswood Dive Site. A puddle of water shows reflections on the ground. A view inside the cassette structure at Chatswood Dive Site. A puddle of water shows reflections on the ground.
A Sydney train passing by the Chatswood Dive site. There are houses in the background. A Sydney train passing by the Chatswood Dive site. There are houses in the background.
The opening to the cassette structure at Chatswood Dive Site. Puddles of water show reflections on the ground. The opening to the cassette structure at Chatswood Dive Site. Puddles of water show reflections on the ground.
A view from above looking down into the Chatswood Dive cassette structure. Metal fencing protects workers from falling down. A view from above looking down into the Chatswood Dive cassette structure. Metal fencing protects workers from falling down.

The construction of Sydney Metro’s Chatswood Dive structure is taking shape.

The dive structure includes a ramp and associated infrastructure that will connect the Metro North West Line to the new metro railway tunnels at Chatswood. A large facility on top of the dive structure will house the mechanical, safety and electrical equipment required to service the twin metro tunnels.

The dive is being built adjacent to an active railway corridor – Sydney Trains' T1 North Shore Line between Chatswood and Artarmon stations was realigned to make room for the two new metro tracks.

The dive structure is 25 metres deep, 250 metres long and 32 metres wide. About 143,000 tonnes of crushed rock was excavated during construction, enough to fill 22 Olympic swimming pools.

Tunnel builder John Holland CPB Ghella has handed over the dive site to our line-wide contractors Systems Connect, which will build the remainder of the dive ramp, fit out the services building and install the metro tracks and other infrastructure to turn the tunnels into an operating railway.

Waterloo Station update

Track laying begins on City & Southwest project

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