Eight-character idioms about bridge

This problem can be solved without much forethought.

Pronunciation Chuán dáo qiáo mén z Hu zhi

Bridge: Bridge. The metaphor is that you don't have to worry about it in advance, and the problem is solved.

Mao Dun's "Game" Source: "Forget it! Cross the bridge when you come to it! Forget eight and go to the fucking night market! "