YOU SAID:

to burn the bridge once you have crossed it

INTO JAPANESE

橋を渡ったら燃やす

BACK INTO ENGLISH

Burn when you cross the bridge

INTO JAPANESE

橋を渡ると燃える

BACK INTO ENGLISH

Burns when you cross the bridge

INTO JAPANESE

橋を渡るとやけど

BACK INTO ENGLISH

Burns when crossing the bridge

INTO JAPANESE

橋を渡るときにやけど

BACK INTO ENGLISH

Burns when crossing the bridge