In this episode of Inside Pima County with Supervisor Rex Scott, Supervisor Scott speaks with Kathryn Skinner, Director of the Pima County Department of Transportation, about the work that goes into planning, maintaining, and improving the county’s transportation network.
Skinner shares her professional journey from the University of Arizona, where she studied civil engineering, to nearly two decades of service with Pima County. After beginning her career designing bridges and transportation structures, she joined the county through the Bicycle and Pedestrian Program and eventually worked her way through several leadership roles before becoming director three and a half years ago.
The conversation provides an overview of the Transportation Department and the scale of its responsibilities. With roughly 190 authorized positions, the department maintains more than 2,200 miles of roadway throughout unincorporated Pima County—often described as the “donut around Tucson.” Crews work across a wide geographic area, from maintaining rural roads in Ajo to clearing snow on Mount Lemmon.
Skinner explains the department’s five primary divisions: planning and engineering, maintenance operations, construction monitoring, mobility innovation and technology, and administrative services. Together, these teams manage traffic signals, roadway striping, grading of unpaved roads, storm response, and capital improvement projects.
A major focus of the discussion is the county’s Road Repair and Maintenance Program. After assessments found that roughly 70 percent of county-maintained roads were in poor or failed condition several years ago, the county implemented a long-term program to address repairs. Since then, more than 500 miles of neighborhood streets have been resurfaced, improving the overall condition of the county’s road network to a “very good” rating.
The episode also explains how transportation funding works in Arizona. The department relies heavily on state-shared transportation revenues such as the gas tax and vehicle license taxes. Because Arizona’s gas tax has not increased since 1991 and vehicles are becoming more fuel efficient, maintaining a growing road network presents ongoing financial challenges.
Skinner also discusses new technology and partnerships that are helping the department work more efficiently, including drone mapping, advanced data analysis, and research collaborations with the University of Arizona’s Center for Advanced Transportation Sciences.
The conversation highlights ways residents can participate as well, including the SeeClickFix mobile app, which allows the public to report issues such as potholes, damaged signs, or other roadway concerns. In addition, the Transportation Advisory Committee—made up of citizen representatives from each supervisor district—provides public input on transportation priorities.
Finally, Skinner discusses the department’s upcoming Transportation Master Plan, which will gather community feedback to help guide long-term transportation planning and investments across Pima County.
This episode offers listeners a closer look at the people, planning, and resources that keep Pima County’s transportation system operating every day.