The NSW government has embarked on an approximately $14 billion scheme to build underground motorways connecting greater Sydney. This project will consist of a Western Harbour Tunnel and Warringah Freeway Upgrade in addition to a Northern Beaches Link and Gore Hill Freeway Connection.

The Western Harbour Tunnel will stretch from the Warringah Freeway at Cammeray, across Sydney Harbour, to the WestConnex interchange at Rozelle. This development is expected to reach completion by 2026.

The acquisition of land will be carried out under the processes set out in the Land Acquisition (Just Terms Compensation) Act 1991. Among other things, this legislation determines how compensation is awarded for any acquisition (where compensation cannot be agreed).