Sergeant Investigator salary at Illinois Department of Transportation

The average sergeant investigator salary at Illinois Department of Transportation was $115,577 , which is 8 percent higher than the average salary for this job in Illinois, and 14 percent higher than the national average for this job . Sergeant Investigator salaries at Illinois Department of Transportation typically range from $102,273 to $128,881 (25th to 75th percentile). The highest reported sergeant investigator salary was $128,880. There are 2 employees at Illinois Department of Transportation with the job title sergeant investigator.