In a writ filed to the Victorian Supreme Court in December, CPB Contractors and John Holland allege engineering firms Aurecon and Jacobs' design for the project contained errors and ...

https://au.news.yahoo.com/west-gate-tunnel-builders-sue-014654989.html

and,

and,

The Allan government accused of keeping secrets about the Big Build Budget

Victoria's financial watchdog has been called in to investigate claims of secret road and rail blowouts in the state budget. It comes amid a legal stoush brewing over design problems with the West Gate Tunnel Project