Highest salary at Highway Dept in year 2023 was $206,328. Number of employees at Highway Dept in year 2023 was 223. Average annual salary was $104,633 and median salary was $98,592. Highway Dept average salary is 123 percent higher than USA average and median salary is 127 percent higher than USA median salary. From 2022 to 2023, the average salary of employees at this employer increased 8.7 percent, the median salary increased 8.8 percent.