It doesn’t matter how much sense your ramp makes, it still needs enough height to allow trucks to pass under it. That’s a lot of height to gain. Any sensible ramp would be very long and take up a lot of space, and be very impractical to have to scale at every intersection.
Yes, because no one anywhere has ever built a ramp that made sense.
You’re intentionally being obtuse.
It doesn’t matter how much sense your ramp makes, it still needs enough height to allow trucks to pass under it. That’s a lot of height to gain. Any sensible ramp would be very long and take up a lot of space, and be very impractical to have to scale at every intersection.