What is a highway superintendent job?

A Highway Superintendent supervises 4-5 Highway Maintenance Supervisors with crews that do maintenance work on state highways and freeways. The Region Manager supervises the Superintendents. I need the detailed text of the 4-C and 4D-17 specifications for their respective pay as it relates to hours worked and overtime pay. I plan to use this for a fire district position at our fire station in Oregon. Can you tell me where to find this information or provide it?