If you look at a satelite map of the area, you would see a rather large canal that would be in your path. Disney uses this canal daily. Given relatively low foot traffic that such a path would see, I can't see Disney going to the expense of building a bridge that could accommodate both boats/barges and pedestrians. And then you'd have to factor in the cost to maintain both the path and the bridge, and keeping out the wildlife from the area of the path....