Investigator salary at Illinois State Toll Highway Authority

The average investigator salary at Illinois State Toll Highway Authority was $76,332 . Investigator salaries at Illinois State Toll Highway Authority typically range from $66,687 to $85,976 (25th to 75th percentile). The highest reported investigator salary was $91,098. There are 4 employees at Illinois State Toll Highway Authority with the job title investigator.