The four lane super elevation will produce 2 lane slopes in both directions (4 lanes) but you only will use 3. Why doesn't that work?
Yes i'm accept with you The four lane super elevation will produce 2 lane slopes but our issue here that there is two different slope rete for one side.
Are you saying that the inside lane might superelevate to 4% but the outside lane might go to 8%? If that is the case I can see a few different ways to do it, but this is NOT something that Civil 3D was designed to do.
1. Enter or override the superelevation values for the alignments
2. Import the values from a spreadsheet
A few drawings might help show what you are trying to do.
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