Facebook postings critical of the giant WestConnex road project began disappearing from the former Leichhardt Council Facebook page on Thursday adding to fears that the new administrator of the merged council, Richard Pearson, has been installed to help shepherd the project through.

The Greens, who were tipped off about the disappearances, took screenshots as postings were disappearing on Thursday.

Map of WestConnex. Credit:SMH

"This is an Orwellian rewriting of history and a deeply political act from the new administration," Greens MP and local government spokesman David Shoebridge said.

"It has only been a week and we are already seeing the influence of Baird's handpicked administrator in the inner west. This can only be a sign of what's to come in Baird's undemocratic amalgamation agenda."