Bowl-shaped holes of various sizes in the pavement surface. Minimum plan
dimension is 150 mm.
Low
< 25 mm deep.
Moderate
25 mm to 50 mm deep.
High
> 50 mm deep.
Record number of potholes and square meters of affected area at each severity level. Pothole depth is the maximum depth below pavement surface. If pothole occurs within an area of fatigue cracking the area of fatigue cracking is reduced by the area of the pothole.




