They hope to 'build a bridge' between the two cultures. [=they hope to help the people in the two cultures understand each other]
I don't know how we'll pay the bills if you quit your job, but 'we'll cross that bridge when we come to it'.
We had our differences in the past, but that's all 'water under the bridge' now.
(..) "listen." I've said that "listen." I'm sorry. I don't get it. What happened? What about everything you said under the bridge? Yeah, um, ahem... You know, just forget about what I said under the bridge. I was talking crazy that night. I was so drunk. (..)1995 TvShow: Friends Title: The One with Two Parts: Part 2 Season: 1 Episode 17