Opposition Infrastructure spokesman Anthony Albanese has written to the National Audit Office asking it look at why Prime Minister Tony Abbott's government allocated $3 billion to the project "without a scrap of evidence" as to whether the project was value for money.

The new Victorian Labor government says it will not build the road and released the business case to the public on Monday, something the Napthine government refused to do.

The documents showed revised versions of the business case with attempts made to improve the cost-benefit of the project by including other projects.

It was also revealed that the Victorian Coalition decided not to submit the business case to Infrastructure Australia for fear the figures "may be used as a justification for not supporting the project".

"The cost-benefit analysis that was done by the Victorian Government for this toll road project showed a benefit of 0.45. What that means is 45c of benefit for every dollar that's invested. That is a shocker of a project," Mr Albanese said.

"The Napthine Government chose not to tell Infrastructure Australia about the facts. And Tony Abbott chose not to ask. He funded the project anyway. No checks. No rigour."

In the letter to the office, Mr Albanese asks the Auditor-General to look at "the actions of the Commonwealth Government in making an advance payment to the Victorian Government of $1 billion for East West Link Stage 2 on or about June 30, 2014 and at a time when the Commonwealth was claiming a "Budget emergency"."

Mr Abbott has pledged $3 billion to the project –$1.5 billion for each section –with half already paid to Victoria.

Mr Albanese said the Prime Minister's pledge that all major projects required a published cost-benefit analysis was meaningless.

Mr Albanese's call came as the NSW Auditor-General savaged the $14 billion WestConnex project in Sydney saying "it was not able to form a view on whether the project is a worthwhile and prudent investment … for the NSW government."

Like the East West Link, the business case for WestConnex has not been released. The NSW Auditor-General also criticised the lack of independent scrutiny of the development of the project.

That project is also receiving federal funds.

Parliamentary Secretary for Infrastructure Jamie Briggs on Thursday called on Labor to reveal its alternate plans to reduce congestion and create jobs for Victorians.

"If they don't support East West Link, then what is their alternate plan for Victoria to improve east-west travel for motorists and freight operators in Melbourne?," Mr Briggs said.

"What is their alternate shovel ready infrastructure project that could create up to 7,000 construction jobs now, not in some other decade?"