cross that bridge when (you) come to it

to not worry about a possible problem until it becomes an actual problem.

I might need a lawyer, but I'll cross that bridge when I come to it.

Usage notes: also used in the form cross the bridge or cross a bridge - to begin to deal with a problem:

We crossed the bridge when we decided we needed to discuss these issues.

• the balloon goes up
• the bandwagon effect
• the bane of life
• the bane of your life
• the bare bones
• the battle lines are drawn
• the battle of the sexes
• the be-all and end-all
• the beau monde
• the beauty of
• the beauty of something
• the beginning of the end
• the best of both worlds
• the best of the best
• the best of the lot
• the best thing since sliced bread
• the better part of
• the better part of something
• the Bible Belt
• the big daddy
• the bigger they are, the harder they fall.
• the big picture
• the big smoke
• the big time
• the bird has flown.