I just don't think it does enough for the 100 points its going to cost you. Armies that want bridge are armies that don't want to move or get benefits from not moving.
It's also only ever going to be an advantage on 24'' deployments, and only if the other dude is literally lining up on the line.
I just think it's way too situational to want to build a competitive list around. I've done it before with a bunch of warriors through a bridge and its hilarious and fun, but I don't think it's worth it personally.