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very susceptible to moisture.
The County provided approximately $310,000 in matching funds from Prop. 403 for the N21 Project, which broke ground in July 2019. The project, which included roadway reshaping, subgrade preparation and soil stabilization, will help to mitigate drainage issues in high-volume traffic areas of N21 with reconditioned roadbeds at two key sections of roadway. The N21 Project’s first section is 0.25 miles long and located on the western end of N21 near the Gap. The second section, which is one mile long, is located at the eastern end of N21 near Kaibeto.
Last fall Public Works began hauling asphalt millings (secured from the Arizona Department of Transportation) to help complete both N21 project sections. The millings were incorporated in the road base. Later, a stabilizing agent was mixed into the subgrade by the contractor to provide stabilization for the newly refurbished roadbeds. About 2,000 cubic yards of millings were hauled for this project, which was completed this past April. This translates to more than 130 belly-dump truckloads delivered and 22,750 round-trip miles traveled by the Public Works team for the N21 Project.