Preparing for launch: Giant caverns completed and work powers ahead for Western Harbour Tunnel

Preparing for Launch: Western Harbour Tunnel Progress

The Minns Labor Government is advancing with Sydney's first new road harbour crossing in nearly 30 years, aiming to deliver a world-class, publicly-owned infrastructure piece.

Construction of massive twin underground caverns at Birchgrove is complete, serving as launch chambers for the largest twin tunnel boring machines (TBMs) in the southern hemisphere, Barangaroo and Patyegarang.

The Tunnel is a true game changer that will reshape the way Sydney moves.

Author's summary: Sydney's new harbour crossing is underway.

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NSW Government NSW Government — 2025-11-05

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