The O'Farrell government says it wants to draw up a plan for the redevelopment of Parramatta Road by December, but councils in the region are complaining about a lack of detail about the WestConnex motorway and associated property development.
Mayors and senior staff from councils along Parramatta Road are meeting with Roads Minister Duncan Gay about WestConnex on Friday, but before the meeting they are increasingly concerned about the government's failure to provide meaningful information about the project.
To win support for WestConnex, which is planned to be built alongside another 25,000 largely high-rise dwellings along Parramatta Road, Mr Gay will have to negotiate with a string of Labor-controlled councils, including Leichhardt, Canada Bay, Strathfield, Marrickville, Burwood, Ashfield and Auburn.
Mayor of Leichhardt Darcy Byrne said he met bureaucrats working on the WestConnex project last week, but was not provided with any detail beyond glossy brochures.
''Without a cost benefit analysis or even any traffic modelling having been provided to the public, it is extraordinary that the government has approved an $11 billion project,'' Cr Byrne said.
''Worse still, the only component of WestConnex the government is interested in talking to councils about is the compulsory acquisition of properties along the Parramatta Road corridor.''
Mayor of Ashfield Lucille McKenna said residents and councils needed to know a lot of information about the WestConnex, including how many cars would use the motorway, how it would affect local roads, and how entry and exit points for the motorway's tunnel would be built.
But it had been impossible to pass on details to residents concerned about these issues.
''We can't answer any questions - we are really, really in a dilemma,'' she said.
The government will release details of the tolls planned for the motorway on Thursday. It is planning to cap tolls across the entire Westconnex motorway at $7.35 in 2013 dollars, which should be about $10 by the time it is scheduled to be opened in 2013.
Sections of the motorway will have individual toll increments. A widened M4 from Parramatta to Concord will attract a maximum $3.90 toll - sure to be controversial because this road is currently free.
A tunnel under Parramatta road from Concord to the City West Link at Haberfield, to open in 2019, will cost a maximum $3.60 toll.
UrbanGrowth NSW, the government's property development arm, has said the WestConnex motorway could make it possible to build another 25,000 dwellings along Parramatta Road in the next two decades.
The organisation says it is working on a structure and ''Amenity Improvement Plan'' for the corridor ''in consultation with local councils, communities and other stakeholders'', to be finished by December.
But councils say they have not had any input into the process.
''I'm open to the idea of working with the state government on the basis that they are fair dinkum about giving local government a strong position abut what happens,'' said the mayor of Canada Bay, Angelo Tsirekas.
Mr Gay's office referred questions about the consultation process to the Sydney Motorways Project Office.