News release: “The Reason Foundation’s 17th Annual Report on the Performance of State Highway Systems measures the performance of all state-owned roads and highways from 1984 to 2006. The study calculates the effectiveness and performance of each state in 12 different categories, including traffic fatalities, congestion, pavement condition, bridge condition, highway maintenance costs, and administrative costs.”

• Full Study: Reason Foundation Galvin Project to End Congestion 17th Annual Report on the Performance of State Highway Systems (1984–2006), By David T. Hartgen, Ph.D., P.E. and Ravi K. Karanam.
• Overall Rankings: State-by-State Comparison of This Year and Last Year
• Urban Congestion Rankings
• Deficient Bridges Rankings
• Traffic Fatalities Rankings
• Google Map with State-by-State Data
• Full Tables (Excel)
• Last Year’s Study: 16th Annual Report on the Performance of State Highway Systems (1984-2005)