Intersection Builder is a user-friendly add-on for Civil 3D 2006 and 2007 that makes it easier to perform grading at roadway intersections. In Civil 3D, corridor models can be developed quite easily to model even a complex roadway cross section. The process becomes more difficult at intersections, however. Grading an intersection using a corridor model usually requires a separate alignment and profile for each curb return. The process of generating these alignments and profiles can be quite tedious and error prone, even for a simple intersection.
The Intersection Builder is a powerful tool that makes short work of this task by generating curb return alignments and profiles according to the parameters that you specify.