what does it look like

@HamsterVolant
Yes , We will make a video for it. Thank you very much!

Those are indeed very nice looking elevated roads, one can make quite realistic on / off / merge lanes etc.
All in all an impressive work.
Nevertheless, connecting one to another means tons of trials and errors (and I've still not found how to do some type of connections...)
I believe some connecting chart / howto video / explanation is in order. That would help a lot, if only to explain what conects to what and how to join to regular roads.
And it would allow people not to miss an interesting collection.

@HamsterVolant
Sorry, I made some pic and explains while I make them all in one asset. Now its to many for me to add description one by one
When I finish all roads I may do that

All those mathematical equations probably mean something to you - but not to us common mortals.
Some pictures or at least a clear explanation would be welcome...