YOU SAID:

I took the bus today and it was so traffic in the roads

INTO JAPANESE

今日バスに乗ったんだけど、道路が大渋滞してた

BACK INTO ENGLISH

I took the bus today, but the road was very congested.

INTO JAPANESE

今日バスに乗りましたが、道はとても渋滞していました。

BACK INTO ENGLISH

I took the bus today, but the road was very congested.