Victoria's Upper House could issue sanctions against the State Government after it failed to comply with a motion to provide documents about the Westgate Distributor project.

The Coalition pushed for more detail about Labor's promise to build new off-ramps on the Westgate Freeway to reduce traffic caused by trucks servicing the Port of Melbourne.

Last month, the Upper House carried a motion to compel the Government to release documents relating to the project, including the business case, planning reports and traffic modelling, by midday today.

Opposition Leader Matthew Guy said the Government ignored the deadline.

"This is becoming a pattern of this Government - say one thing before the election and do something completely different after it," he said.

"I think people are absolutely and utterly sick of that kind of politics."

Failing to comply with the motion could lead to Parliamentary sanctions against the Government including the suspension of the Government's leader in the Upper House, Gavin Jennings.

The Government ignored a similar motion in February, compelling it to release the contracts for the East West Link.

The Government does not have a majority in the Upper House where the balance of power is held by the Greens and several minor parties.