MOT Construction Staging in OpenRoads (GEOPAK)

How can construction staging be modeled in GEOPAK SS4?  Before OpenRoads, we typically had plan sheets and typical sections to show staging for lane shifts, temporary pavement, crossovers, etc.  Quantity calculations were quite cumbersome for each phase.  How can OpenRoads make this more efficient?  Would each phase be modeled as a separate corridor?  Each with its' own terrain model?  

Thanks in advance,

Brian