The bureaucrat in charge of the Andrews Government’s “Big Build” has quit, as cost blowouts continue to soar.

Neil Mitchell broke the news on Tuesday morning.

Press PLAY below to hear Neil’s red hot tip

Corey Hannett will leave the role as director-general of the Major Transport Infrastructure Authority next month.

He’s overseen the removal of dozens of level crossings, as well as the construction of North East Link, the Metro Tunnel and West Gate Tunnel.

Mr Hannett has had to defend the government’s $7 billion blowouts on the tunnels.

(Photo by Asanka Ratnayake/Getty Images)