What if we run out of money? — Let’s cross that bridge when we come to it.

Cross that bridge when you come to it

The meaning is –Don’t worry about a possible problem now; deal with it only if or when it happens.

Similar idioms –

• Don’t borrow trouble

• One step at a time

Examples

1. What if we run out of money? — Let’s cross that bridge when we come to it.

2. She’s stressed about failing the final, but I told her to cross that bridge when she gets to it.

中文意思是 – 船到橋頭自然直；等問題真的發生再處理 / 船到桥头自然直；等问题真的发生再处理