Stage one of the redevelopment will include the construction of a link road, laid between turns four and nine of the circuit.
The link road will allow the existing circuit to be split into two separate racing circuits, effectively doubling the potential capacity of the facility. Australian Racing Driver's Club CEO Glenn Matthews and Eastern Creek Raceway general manager Geoff Arnold helped break ground at the development site.
The work is being carried out at night by Penrith-based construction company JK Williams. The link road is expected to be completed within twelve weeks.
Future development works, which are scheduled to begin later in 2011, will include a significant track extension, new race control tower and amenities buildings.