Congestion on local roads will be eased with the opening of the M2 on and off ramps via Windsor Road.
West facing ramps at Windsor Road will allow motorists heading west to get on the motorway at Windsor Road.
East-bound traffic can take the off ramp to access Baulkham Hills, Northmead and Parramatta.
The ramps will reduce congestion on Old Windsor Road, Caroline Chisholm Drive and Seven Hills Road.
They are expected to open by the end of July.