The bridge spans the river, so the bridge symbolizes a key point in the dreamer's life, which may represent a crucial decision, a turning point in life, or a major event in life.
The bridge that I often walk in my dream is broken, suggesting that the dreamer has encountered setbacks or obstacles and can't walk.
Dreaming of a swift river reflects the inner chaos of the dreamer.
Dreaming that one's companion has passed, but he can't, implies that the dreamer lacks self-confidence.
Generally speaking, as long as you have confidence, you can overcome any difficulties.
Good luck!