I've read Psychoduck's Bridge Tutorial, and I was wondering if I make a hole texture for a bridge, units could move underneath it. I want to make a bridge that goes from one side of the map to the other.
Well that "bridge" is actually a hill with invisible sides so that would be impossible, unless you make a bridge from prop (but then units won't be able to get on it of course). EaW doesn't support 2-leveled maps.
Ok. That's all I had to know.