YOU SAID:

Cross you bridges when you come to it

INTO JAPANESE

あなたがそれに来るときあなたは橋を渡ります

BACK INTO ENGLISH

You cross the bridge when you come to it

INTO JAPANESE

橋に着くと橋を渡ります

BACK INTO ENGLISH

When you reach the bridge, you will cross the bridge

INTO JAPANESE

橋に着くと橋を渡ります

BACK INTO ENGLISH

When you reach the bridge, you will cross the bridge