Referees have been trained that balls will routinely end up under bridges, and that G14 only applied to conscious and strategic placement. This applies to both aiding and inhibiting of balancing.
I would not expect a "fix" for the bridges. They seem to be designed to release balls from under them when
raised on that side. Has anyone seen balls stay stuck when under a fully raised bridge-end? If so, this would seem geometrically very difficult--any idea how it happened?