The Victorian government has blamed increased building costs for the additional $837m spend, with the project now more than $3bn over its initial budget.
Minister for Transport Infrastructure, Danny Pearson, announced a cost blowout of $837 million today, with the project now expected to cost $15 billion, $4 billion more than the original cost.
A leaked legal letter, obtained by The Age, outlines a series of financial incentives to the Cross Yarra Partnership construction consortium to secure the completion of the train line under central Melbourne.