THE South West Rail Link is a year ahead of schedule and more than $100 million under budget.
NSW Premier Barry O'Farrell and Transport Minister Gladys Berejiklian announced this last week.
Construction workers have also finished laying the last of the 53,000 thousand rail sleepers on the final section of the track.
Mr O'Farrell said the outcome demonstrated the state government was getting on with the job of delivering key infrastructure where needed. "The fantastic news for people in Sydney's south-west is this important rail link is on track to open 12 months earlier than planned," he said. "Not only will we run train services ahead of the originally announced date of 2016, we'll also complete the project under budget."
Ms Berejiklian said the South West Rail Link was now due to open in 2015.
"We committed to delivering the rail link and one of our first acts when coming to government was to put in place a dedicated project team to get on with the job," she said.
"This is the result of that focused effort and it follows the early opening of Glenfield station and transport interchange in September 2012 — four months ahead of schedule."
The last 31 kilometres of track and 10 of the project's 14 bridges are now complete. Over coming months station buildings, overhead wiring and rail signalling and communications systems will be finished before the new line is tested and commissioned.