YOU SAID:

we cross the bridge when we get there

INTO JAPANESE

そこに着いたら、私たちは橋を渡る

BACK INTO ENGLISH

When we get there, we'll cross the bridge.

INTO JAPANESE

そこに着いたら、橋を渡ります。

BACK INTO ENGLISH

When you get there, cross the bridge.

INTO JAPANESE

そこに着いたら、橋を渡りなさい。

BACK INTO ENGLISH

When you get there, cross the bridge.