Treatment Rules
The following table shows the pavement treatment options defined by ADOT for consideration in its Airport Pavement Preservation Program (APPP). Pavements with a PCI falling below 55 for AC-surfaced pavements and 65 for PCC pavements were not eligible for the APPP and instead have been identified as requiring major rehabilitation.
Table 1. Summary of ADOT's APPP treatment set options. | Treatment Name | Treatment Trigger | 2017 Unit Cost1 |
| Asphalt Emulsion Seal Coat (P-608) | Under the unlimited funding analysis, P-608 application is considered for AC-surfaced and porous friction coarse (PFC) pavement sections (excluding PFC-surfaced runways) with a section PCI greater than or equal to 70 and minimal amounts of raveling present (less than 5% for medium severity and 1.5% for high severity). This treatment type results in a 2.5-year life extension. The pavement section must be at least 2 years old and reapplication is allowed every 3 years as long as the predicted PCI for that year is still within the allowable range. PFC-surfaced pavements are individually investigated after the analysis is prepared to make sure that P-608 application is acceptable.
Under the constrained funding analysis, the above rules apply with exception that the PCI must be between 70 and 85 and reapplication is allowed every 5 years. | $5.35/sy |
| Thin (1-inch) Asphalt Overlay | Under the unlimited funding analysis, 1-inch asphalt overlays are considered for AC-surfaced pavement sections that have a PCI between 55 and 70. PFC-surfaced pavements are excluded from this treatment type. This treatment can only be applied once during the analysis period. There are no minimum pavement age requirements for this treatment to be applied. This treatment is not applicable to situations where transition issues and/or pavement drop-offs make this an undesirable solution. In addition, it is only for use on pavements that have a structure of 2 inches or less of AC top mat. Historical cross sections are investigated once the analysis is prepared to make sure that the asphalt thickness is less than 2 inches. P-608 application is allowed 2 years after construction.
Under the constrained funding analysis, the above rules apply with exception that no other subsequent treatments are allowed during the analysis period. | $14.80/sy |
| Mill and Thin (1-inch) Asphalt Overlay | Under the unlimited funding analysis, mill and place 1-inch asphalt overlay is considered for existing AC-surfaced and PFC pavement sections that have a PCI between 55 and 70. This treatment can only be applied once during the analysis period. There are no minimum pavement age requirements for this treatment to be applied. This treatment is not applicable to situations where transition issues and/or pavement drop-offs make this an undesirable solution. In addition, it is only for use on pavements that have a structure of 2 inches or more of AC top mat. Historical cross sections are investigated once the analysis is prepared to make sure that the asphalt thickness is more than 2 inches. P-608 application is allowed 2 years after construction.
Under the constrained funding analysis, the above rules apply with exception that no other subsequent treatments are allowed during the analysis period. | $16.27/sy |
| PCC Joint Resealing and Spall Repair | This treatment has the same rules for the unlimited funding and constrained funding analyses. PCC joint resealing is considered for PCC sections with a PCI between 65 and 90 that are exhibiting joint seal damage. If the majority of the joint seal damage is low-severity, the joint resealing is scheduled for Year 3 of the analysis; if it is medium-severity, it is scheduled for Year 2; and, if it is high-severity, it is scheduled for Year 1. This treatment can only be applied once during the analysis period and it results in a 3-year life extension. | $8.00/sy |
Notes:
- The unit cost includes crack sealing, crack repairs, or patching, or any other necessary repairs that need to take place prior to applying selected treatment on AC-surfaced pavements. In addition, mobilization, barricading, and final paint striping costs are also included in the unit cost, as applicable.