Western Harbour and Beaches Link Tunnels

The Project

Western Harbour Tunnel
The Western Harbour Tunnel is a proposed major Sydney Harbour Crossing which is expected to have an approximate length of 7km which would run between Rozelle, Crows Nest and Neutral Bay. The 3 horizontal alignments under consideration cross the Sydney Harbour between Balmain and North Sydney (Western Harbour Crossing).

Beaches Link Tunnel
Proposed tunnel with an expected length of some 6.5km to run between Neutral Bay and Balgowlah. The 4 horizontal alignments under consideration cross Middle Harbour between Mosman (The Spit) and Seaforth (Middle Harbour Crossing).

Our Services

Western Harbour Tunnel
Estimating, risk and high-level construction program for tunnel options.

Development of strategic cost estimates for the surface works, the mainline tunnel, slots, cut and cover tunnels and ramps. The tunnel estimates were based on Tunnel Boring Machine, Road Header and Immersed Tube techniques.

Beaches Link Tunnel
Development of strategic risk-based tunnel estimates based on Tunnel Boring Machine, Road Header and Cast Insitu techniques.