The project was then transferred onto a Civil BIM platform, Civil 3D to facilitate the design to visualisation process. This involved a number of technical challenges, requiring careful planning at the outset. The processed aerial survey model which contained over 5 million points was further optimised by limiting full detail to the design corridor and degrading the point density outwards. The planned route was broken up into four sections, each referencing a common geometric alignment, to optimise performance whilst maintaining a dynamic design relationship.