How does Pima county choose which roads to repave?
In November 2022, the IrisPRO Pave Automated Data Collection Vehicle surveyed the streets of Santa Catalina Estates to collect data and assign a Pavement Condition Index (PCI) score to each road.
How are roads chosen?
In 2019, the PCTAC conducted a public survey regarding how to allocate resources for local roads. The overwhelming response was to repair the worst roads first. As such, the PCTAC adopted the following process for selecting local roads for milling and paving, which will continue to be used for selecting roads to be milled and repaved during the Fiscal Year 2024 program: Pavement Index page.
The Pavement Condition Index (PCI) is determined by an objective analysis that uses ASTM D6433-18 Standard Practice for Roads and Parking Lots Pavement Condition Index Surveys. PCI ranges from 0 to 100 with the latter representing new pavement.
Roads of the same PCI were additionally ranked by:
o Presence of school crosswalks
o Lack of sidewalks
o Lot density
Roads in a subdivision will typically have different PCI ratings and because it is not practicable or cost-effective to repair one road in a subdivision and then move to another subdivision or local road, the PCTAC provided the following criteria for developing bid packages that would maximize work with the available repair budget:
1. Select worst ranked road segment from the list, then select all road segments in the same subdivision or contiguous to that road requiring mill and pave treatment.
2. Once all qualifying road segments have been selected, select the next worst road on the ranked list.
3. When the remaining budget is too small to select the next qualifying worst road on the ranked list and associated subdivision/contiguous segments, skip that worst road and select the next worse road on the list. This process continues until the budget for road repair has been expended.