How do you get over the bridge as the wolf Zelda?

Answer 1

There are several bridges in this game you could be referring to. The first, where the bridge is not present: Press Z and warp to the Faron Woods. Look around for a bridge, get close to it, press Z, and warp back to the area. The second, when there is oil scattered across the bridge and it is lit on fire: using R and ^, press a crate to the edge. Climb on the box with A and jump into the lake. The third, when the Eldin bridge is half-gone: You need to wait until you've unlocked the desert for this one. Get into the desert and head straight from the place where the cannon lands you. You should eventually see a strange shape sticking up from a hill. That's the Eldin Bridge! Press Z once you're close to warp it to the area it's needed.