I'm not entirely sure which specific 'Under the Bridge' you are referring to. There could be many works with this title. It could be a movie, a play, or something else. If it's a movie, you might need to check movie databases like IMDb to find the cast list.
I'm not sure specifically which 'under the bridge' true story you are referring to. There could be many stories related to that phrase. Maybe it's a local event or a specific documentary. Without more context, it's difficult to determine the cast.
Again, depending on what 'Under the Bridge' is. If it's a well - known big - budget production, there might be some famous actors. But if it's a small - scale project, probably not. Without more details, it's impossible to say for sure.
The location under the bridge could be a place of isolation. It might signify that the girl is in a marginalized situation, away from the normal hustle and bustle of society.