Figure 3 through Figure 6 illustrate the distribution of projects by the types of roads on which they were conducted. Figure 3 shows number of projects by functional class, following the HPMS classification scheme; Figure 4 shows average total cost of projects by functional class; Figure 5 shows projects by the agency who owns the road; and Figure 6 shows average total cost of projects by the agency who owns the road. If the functional class or road ownership was not indicated, the project is counted under the "unknown" category.

Figure 3. Number of Projects by Functional Class

Most projects were categorized as "Unknown" indicating that the State did not associate a functional class for a particular project. Projects that were associated with a functional class were most often categorized as "Rural Major Collector" or "Urban Principal Arterial — Other". There were 370 projects categorized as "Other" and of those, roughly 220 were categorized as multiple classes or systemic. Roughly another 25 were categorized as "n/a" due to the fact that they were non-infrastructure projects.

Figure 4. Average Total Cost of Projects by Functional Class

Figure 4 shows the average total cost of projects by functional class. It is important to note that not every project had an associated cost so the average is based on the number of projects which had cost information available. Projects categorized as "Urban Principal Arterial – Interstate" had the highest average total cost per project of $4.21 million and projects categorized as "Rural Local Road or Street" had the lowest average total cost per project of $0.21 million.

Figure 5. Number of Projects by Road Ownership

Most projects were conducted on roads owned by a "State Highway Agency" or "Unknown" (indicating that the State did not indicate road ownership for a particular project). There were 116 projects categorized as "Other" and of those, roughly 80 were categorized in state-specific ownership categories.

Figure 6. Average Total Cost of Projects by Road Ownership

Figure 6 shows the average total cost of projects by road ownership. It is important to note that not every project had an associated cost so the average is based on the number of projects which had cost information available. Projects categorized as "State Highway Agency" had the highest average total cost per project of $1.15 million and projects categorized as "Other Local Agency" had the lowest average total cost per project of $0.24 million.