The $16 million major upgrade of Samantha Riley Drive has started.
The project will entail widening a section of Samantha Riley Drive, east of Windsor Road, to a four-lane carriageway.
There will also be major intersection upgrades at Redden Drive, Hezlett Road and Foxall Road and a pedestrian bridge installed.
The upgrade will take about two years to complete.
The Hills mayor Michelle Byrne described the project as ‘‘one of the most significant infrastructure projects of this term of council’’.
“Kellyville will continue to accommodate much of our residential growth over the next few years and this major road upgrade is in preparation for the incoming residents,’’ Cr Byrne said.
The council’s manager of infrastructure projects, Ken Willimot, said the first stage of the upgrade would take 12 to 18 months to complete.
“Two roundabouts will be constructed at the intersection of Foxall Road and Redden Drive, while a set of traffic lights will be installed at the intersection with Hezlett Road,” he said.
During widening works, one lane of traffic will continue to flow in each direction.
Mr Willimot said the second stage would require some fairly significant cutting: four- to five-metres-deep into a hill.
‘‘This will make the road flatter and we will construct a pedestrian bridge overhead between Hezlett and Foxall roads,” he said.