Willie,
If you can send me what you believe to be the typical section (existing conditions, and what will be over layed/milled) I will happily suggest which Rehab sub assemblies you want to use in your corridor model.
Note that I said model singularly; as I imagine that all of the roads tie into each other, and in the end you will have one corridor that models all of these roads and ties them all together. Unless they do not connect to each other.
This is the fun part of C3D!
You will want to study very carefully the help file diagrams on those babies, as they are somewhat complex, and have interesting attachment and targeting parameters!