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14 <br /> Rating p surface condition <br /> With an understanding of surface Once significant deterioration begins, toward the top end of the scale? <br /> distress, you can evaluate and rate it is common to see pavement decline In very poor condition and at the <br /> asphalt pavement surfaces. The rating rapidly. This is usually due to a combi- bottom of the scale? Or somewhere <br /> scale ranges from 10—excellent nation of loading and the effects of in between? Next, think generally <br /> condition to 1—failed. Most pave- additional moisture. As a pavement about the appropriate maintenance <br /> ments will deteriorate through the ages and additional cracking develops, method. Use the rating categories <br /> phases listed in the rating scale. The more moisture can enter the pave- outlined below. <br /> time it takes to go from excellent ment and accelerate the rate of Finally, review the individual <br /> condition (10)to complete failure (1) deterioration. pavement distress and select the <br /> depends largely on the quality of the Look at the photographs in this appropriate surface rating. Individual <br /> original construction and the amount section to become familiar with the pavements will not have all of the <br /> of heavy traffic loading. descriptions of the individual rating types of distress listed for any <br /> categories. To evaluate an individual particular rating. They may have <br /> pavement segment, first determine its only one or two types. <br /> general condition. Is it relatively new, <br /> z RATING 10 <br /> O Excellent <br /> RATING 6 <br /> z Good <br /> O <br /> V <br /> z RATING 4 <br /> w Fair <br /> 5 <br /> w <br /> > RATING 2 <br /> Poor <br /> PAVEMENT AGE <br /> In addition to indicating the RATINGS ARE RELATED TO NEEDED MAINTENANCE OR REPAIR <br /> surface condition of a road, <br /> a given rating also includes a Rating 9 & 10 No maintenance required <br /> recommendation for needed Rating 8 Little or no maintenance <br /> maintenance or repair. This <br /> feature of the rating system Rating 7 Routine maintenance, cracksealing and minor patching <br /> facilitates its use and enhances <br /> its value as a tool in ongoing Rating 5 &6 Preservative treatments(sealcoating) <br /> road maintenance. <br /> Rating 3 &4 Structural improvement and leveling (overlay or recycling) <br /> Rating 1 &2 Reconstruction <br />