Creating a wish related to this thread, at Autodesk's request:
http://forums.autodesk.com/t5/autocad-civil-3d-general/structure-table-inverts-by-direction/td-p/636...
Here's a quote of the initial post from that thread, in order to help save time, so that others might be able to quickly decide to vote or not:
@BlackBox_ wrote:
How does one go about setting up a Structure Table that looks like this, where each Structure Invert is in a separate column:

... And NOT something that looks like this (which is all I've been able to figure out
); we do not want all of the Inverts are dumped into a single column:

Cheers