Construction work is under way in Rouse Hill, as work on the North West Rail Link ramps up.
The green light for the flurry of activity was given with the approval of the project’s second Environmental Impact Statement (EIS).
The early works have begun with demolition and site preparation at Cudgegong, Tallawong and Schofields roads in Rouse Hill.
The EIS focused on the design and operation of the eight new railway stations including Rouse Hill, Cudgegong Road and Kellyville.
It also looked at transport interchanges and commuter parking for 4000 vehicles.
There will also be improvements to Old Windsor Rd, including the widening of Balmoral Rd, Kellyville, to two lanes each way and moving it 30m north to line up with Miami St.
Transport Minister Gladys Berejiklian said the community needed to be prepared for “possible delays and changes” to the road conditions.
“We’re on track to have the first tunnel boring machine in the ground next year,” Ms Berejiklian said.
* Demolition and site preparation work has started at Cudgegong, Tallawong and Schofields roads in Rouse Hill
* Motorists are warned to expect delays and changed road conditions