The work began this week between Ballykeel Crossroads and Dromara.
“This scheme will increase the life of the road, greatly improving the strength and ride quality of the carriageway on an important route between Dromara and Hillsborough,” explained Mr Kennedy.
To ensure the safety of road users and the operation on site a full closure will be in place from Dromore Road, Hillsborough to Ballynahinch Road, Dromara, until 30 November, when the work is expected to be completed.
Works on the Hillsborough Road will begin each morning from approximately 7.30am and continue until 6pm each evening.
During these works the carriageway will be down to single file traffic with signals in operation.
Closures will be required for the surfacing and during these periods all traffic will be diverted onto the B2 Ballynahinch Road and B7 Dromore Road.
The planned dates are subject to favourable weather conditions and Roads Service will keep the public informed of any change.
Roads Service has carefully programmed the works operations and traffic management arrangements in order to minimise any inconvenience to the public, however, motorists should be aware that some delays may be expected and that additional time should be allowed when planning any journeys.