Tunnel for Metro under Sydney Harbour complete

The successful tenderer for the construction of twin 15.5km tunnels and six new metro stations as part of Sydney Metro Stage 2 has been named.
Photo courtesy of Transport for NSW.

The first metro railway tunnel to be built underneath Sydney Harbour has been completed, in a milestone for public transport in Sydney.

Premier Gladys Berejiklian and Minister for Transport Andrew Constance visited the deepest point of the tunnel, 40 metres below the barbour floor to meet workers who built it.

“This is an engineering feat of historic proportions for our great city which will forever change how we get around Sydney,” Ms. Berejiklian said.

“Today we have made history walking deep beneath Sydney Harbour for the first time, inside one of two metro railway tunnels to be built as part of this mega project.”

Tunnel Boring Machine (TBM) Kathleen has been digging railway tunnels under Sydney Harbour for the Sydney Metro.

The TBM has now been disassembled and its 90-tonne cutter head and front sections have been barged back across Sydney Harbour.

It will then be reassembled in order to start digging the second tunnel.

Metro trains are expected to start running through the tunnels in 2024, extending the North West Metro into the city and beyond to Bankstown.

Sydney Metro will have the capacity of a train every two minutes in each direction. It will be able to move more people across the harbour in peak hour than the Harbour Bridge and Harbour Tunnel combined.

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