For the first time, the head of Australia’s biggest infrastructure project, DisConnex, agrees to an exclusive interview. We discuss project secrecy, the wild variations in cost estimates, engineering and the impending privatisation.

Blind Faith: unlocking the secrets of WestConnex

Highway Robbery – the cuff-linked kind

WestConnex: when four tollroads become ten

Mumbo Jumbo response to WestConnex tolling alchemy

WestConnex: what NSW must learn from Victoria and Queensland