If the elevated way is floating over a slope, another elevated way can be built to overlap at the slope.
only ways of the same type can be connected.
I'm not sure what happens if you try and run convoys through this type of junction
I mostly play pak64, but this looks more like pak128 - except that all of the pak128 elevated ways have lane markings, and I don't see any on the longer stretch of elevated way in that picture.
Could you give a step-by-step walkthrough on how to build that structure? I can't figure out how to get the elevated track to, as you say, "float over the slope".
(Was reply to something that was removed.)
you can make that by building an elevated way on flat ground, then dig under the elevated way with the trench tool.
Could reproduce it. Vehicles should somehow be able to cope with it. Iirc vehicles can drive upward but cannot drive downward on such a 'junction'.