Mr Campbell has also overseen two major policies marred by errors in the past month and was yesterday forced to back down on claims to Parliament that members of the Sydney media had hacked into the transport blueprint website.
A breakdown of costs, released by the Transport Minister yesterday, shows the revived north-west rail link would cost $4.89 billion if construction began immediately.
But the State Government is not planning to start work until 2017, meaning it will cost $6.75 billion because of inflation.
The State Government axed the project in 2008 and revived it on Sunday in its new $50 billion Sydney transport blueprint, after the Opposition promised to deliver the line.
Over the 14 years before construction is due to be completed on the rail link, Opposition Leader Barry O’Farrell says drivers will be slugged up to $19 a day to use the M2, Lane Cove Tunnel and the Sydney Harbour Bridge.
That comes on top of a new car tax, which will slug drivers between $5 to $30 a year extra to register vehicles weighing more than 975 kilograms from July.
Mr O’Farrell says the Coalition will start building the north-west rail line in its first term if it wins next year’s state election.
“Labor’s transport plan doesn’t deliver the transport options that Sydney needs in a timely fashion,” he said.
The greatest cost associated with north-west rail link is tunnelling, which will chew up about half of the money allocated for the project.
Pressure on Campbell rises
Mr O’Farrell is also calling on Mr Campbell to stand down after the CBD Metro plan was scrapped on Sunday.
At least $271 million has already been lost on the Metro, with another $60 million expected in compensation to companies working on the project.
On Tuesday night, the Transport Minister also admitted that subjecting eco-friendly hybrid cars to the new weight tax was a mistake.
And earlier this month, he had to explain why 1 million maps for the MyZone ticketing scheme had to be pulped when mistakes were discovered.
The transport blueprint also promises a new rail line to Leppington in Sydney’s south-west, a major expansion of light rail around the city and more buses and ferries.
Sydney’s inner west will get a light rail extension to Dulwich Hill and another line will run from Haymarket to Circular Quay.
A tunnel will also be built from Redfern to Wynyard to speed up rail traffic from the west.
The plan promises 1,000 new buses, six new ferries and $3 billion worth of new trains within 10 years.