The 'under the bridge series true story' could potentially revolve around a community that exists under a bridge. It might detail their daily struggles, how they form relationships, and their interactions with the outside world. For example, it could be about a group of artists who use the space under the bridge as their studio and the story of how they came to be there and what they create.
The song 'Under the Bridge' by Red Hot Chili Peppers was inspired by Anthony Kiedis' real - life experiences. He was struggling with drug addiction at the time. The 'under the bridge' referred to a place in Los Angeles where he used to go to get away from his problems and think. It was a very personal and emotional song for him.
I don't think it is. Usually, such titles are often used for fictional works that draw inspiration from various sources but aren't based on actual events. This could be a case of that.