The traffic chaos caused by a jackknifed truck on Melbourne's West Gate Freeway underlines the urgent need for the West Gate Tunnel project, Roads Minister Luke Donnellan says.

The truck blocked all four eastbound lanes of the freeway near the Burnley Tunnel when it got into strife during peak hour on Thursday morning.

The incident caused traffic to back up towards the Bolte Bridge, causing major delays and traffic headaches for motorists using Melbourne's main link between the western suburbs and the city.

On Wednesday, work on the $6.7 billion West Gate Tunnel project was halted after the Opposition joined forces with the Greens in Victoria's Upper House to revoke planning approval.

The tunnel would provide another option for people travelling to and from the western suburbs.

There were huge delays for inbound traffic after the truck jackknifed. ( ABC News )

Attacking the move to block the planning approval as a "a two-bob stunt," Mr Donnellan said it was "simply not acceptable for the Liberal Party and the Greens to put their heads in the sand and say we don't need a second river crossing".

"If ever there was a time which highlighted why we need a second river crossing it was this morning," he said.

"Across the west, all the roads are gridlocked.

"Melbourne needs a second river crossing over the Maribyrnong to ensure we can get goods directly into the ports, to ensure we get trucks off the inner-city streets [and] to ensure that we have reliability of travel, whether you're coming from Ballarat, whether you're coming from Geelong, or whether you're coming from Point Cook."

'Build a proper road': Coalition to Andrews Government

Premier Daniel Andrews told Parliament the Government had reissued planning approvals for the project, enabling work to restart.

Defending the Opposition's decision to block the project, it roads spokesman, David Hodgett, said the Government had tried to cut corners.

"We're not saying don't build a road, we're saying if you're going to build a road, build it and build it properly," Mr Hodgett said.

The gridlock was proof Melbourne needed another river crossing, Luke Donnellan said. ( ABC News )

"Don't commence a project without planning approvals and without knowing how you're going to pay for it and just bully it through, push it through and expect everyone to fall in behind you."

Mr Hodgett also took aim at the "bad deal" struck by the Andrews Government to help fund the project, which saw toll road operator Transurban granted permission to charge drivers on CityLink for another decade until 2045.

"Daniel Andrews is trying to sign Victorian motorists up to a deal where they're going to be ripped off for years, with motorists paying tolls from the east, south-east and north to pay for a road that they may never, ever use," he said.

He said the road should instead be paid for by taxpayers.

The truck has since been removed and all lanes of the freeway have reopened.

The incident comes as Victoria prepares for six weeks of disruption across its road, rail and tram networks after the State Government announced another construction blitz.