There are no commerically available grade crossings through curved track. With Atlas Code 80 track (I don't know about Code 55) you can get away with a 90 degree crossing (right angle) where you'd cut off the straight legs of the track but you'll still have a very short piece of straight track through the crossing. I think that would work though.
If you truly want what you've illustrated you'll have to hand lay it.
If you truly want what you've illustrated you'll have to hand lay it.