"[cross] that bridge when {sb} [come|get] to it"의 정의 및 의미

What is the origin of the idiom "cross that bridge when somebody comes to it" and when to use it?

The origin of the idiom "cross that bridge when somebody comes to it" is uncertain, but it likely stems from the literal act of crossing a physical bridge, where one would approach and address obstacles as they arise rather than fretting over them beforehand. This expression is commonly used to convey the idea of focusing on present concerns and deferring worry or action regarding future uncertainties until they become unavoidable.