The plain track which interfaces with a number of the turnouts was also designed for renewal. The Turnout designs were composed within two phases. A summary of the Parkes Yard Turnout Design works consisted of the following elements:
- Investigation and design – Survey and Geotechnical investigation of the existing yard, preparation of designs for track and civil works;
- Track works – Design and installation of turnouts;
- Track works – Re-alignment of tracks, where necessary, to meet JHRCRN standards, and specification of proposed turnouts;
- Civil works – including drainage and formation build-up to improve asset life expectancy and maintainability (civil design for any potential changes to signalling layouts would need to be considered further).
