The road will be upgraded from a mainly two-lane road to a four-lane divided road with a central median and see sets of traffic lights installed.
An off-road shared pedestrian and cycling path will be constructed as part of the upgrades along with designated turning lanes and pedestrian crossing provisions at the traffic lights.
Funding for the upgrade has been provided as part of the Housing Acceleration Fund, which set aside more than $1.4 billion for projects to fund roads, transport, water and electricity infrastructure to accelerate housing supply.
Minister for Planning and Housing Anthony Roberts said the upgrade was speeding up the delivery of new homes and roads for the Macarthur region.
“The NSW Government is delivering on its commitment to provide key infrastructure at the same time as slabs are being poured on new homes,” Mr Roberts said.
“The funding will enable more lanes to be built on Campbelltown Road to cater for the new community at Edmondson Park and thousands of future homes expected there,” he said.
Minister for Roads, Maritime and Freight Melinda Pavey said the start of work on this upgrade was another step towards building better connections for the growing Campbelltown and Macarthur communities.
“As more land for housing is released, the NSW Government needs to ensure all roads and public transport can provide connectivity for these new communities,” Ms Pavey said.
“Access and travel times for road freight which travels through south west Sydney will be improved as well as safety for motorists, pedestrians and cyclists”.
Major work on the first stage of the upgrade between East Town Centre Road and the new Macdonald Road intersection at Edmondson Park is expected to be completed by the end of 2020, weather permitting.