PRIME Minister Tony Abbott announced a $2.9 billion upgrade package for Liverpool's roads to support his government's plan to build a second Sydney airport at Badgerys Creek.
Mr Abbott held a press conference at Liverpool Council on Wednesday following the cabinet decision which ended more than 40 years of speculation about the location of the airport.
He announced that the government would spend $1.2 billion on road infrastructure in the area over the next four years and a further $1.7 billion over the following four years.
The state government would contribute 20 per cent of the road funding and would immediately move to reserve the rail corridor to continue the south west rail link to Penrith, Mr Abbott said.
"So that western Sydney will not only get the road infrastructure that it needs but it will also over time, get the rail infrastructure that it needs," Mr Abbott said.
Mr Abbott would not speculate about the direction that flight paths leading to the airport may go in and said it was too early to discuss whether the airport would have a curfew.
He said residents would not be as affected by aircraft noise because aeroplanes are much quieter now than they once were.
"There will be far fewer noise effects because there are only about 4000 people living in the noise footprint of Badgerys."
When asked what he would say to the residents who had recently moved in to growth centre suburbs in the area, he said: "We've been talking about using this site since 1986, so it couldn't be unexpected to anyone in western Sydney."
He said plans that had previously been drafted would need to be updated and community consultation and environmental impact statements would be done.
The government would set up a dedicated office to co-ordinate the planning and design of the airport and would be looking for private partners in the project, the Prime Minister said.
"There will be 4000 jobs in the short term in road construction and over time we believe there will be at least 60,000 new jobs in western Sydney."