Massive dangerous potholes that could cause a bus to subside

There is 4-5 drain covers or potholes that make the buses lorries and coaches i drive nearly tip over one of them is of major concern as it pulls the large vehicles either in to oncoming traffic or to the verge and could cause a major incident where people could get fatally injured. We drivers try to avoid this but if oncoming traffic it’s impossible and it could cause either a head on collision or vehicle damage as suspension failure or even a crash into a field this needs to be rectified promptly ans immediately as this whole road from Bridport has many dangerous unstable and uneven road conditions that could cause human fatalities this is a serious matter and has also been reported to local police