Pavement Maintenance
The table below lists levels of service for pavement maintenance.
Condition | Desirable Level | Acceptable Level | Tolerable Level |
|---|---|---|---|
Longitudinal Rutting | Maintain as follows: | Maintain as follows: | Maintain as follows: |
0 - 500 ADT | < ½ & 50% per WP | < 1" & 50% per WP | < 3" & 25% per WP |
501 - 10,000 ADT | < ½ & 50% WP | < 1" & 50% WP | < 3" & 25% per WP |
10,001 & up ADT | < ½ & 25% per WP | < 1" & 25% per WP | < 1" & 50% per WP |
Alligator Cracking for all ADTs | Maintain with no visible
cracks | Maintain with visible cracks
, £ 10% per WP | Maintain with visible cracks
£ 50% per WP . |
Ride Quality | Maintain as follows: | Maintain as follows: | Maintain as follows: |
0 - 500 ADT | > 2.5 SI | > 2.0 SI | > 1.5 SI |
501 - 10,000 ADT | > 3.0 SI | > 2.5 SI | > 2.0 SI |
10,001 & up ADT | > 3.5 SI | > 3.0 SI | > 2.5 SI |
Abbreviations: Wheel
path (WP), serviceability index (SI), average daily traffic (ADT) | |||