Senior Internal Auditor salary at Illinois State Toll Highway Authority

The average senior internal auditor salary at Illinois State Toll Highway Authority was $107,404 , which is 6 percent higher than the average salary for this job in Illinois, and 24 percent higher than the national average for this job . Senior Internal Auditor salaries at Illinois State Toll Highway Authority typically range from $106,537 to $108,271 (25th to 75th percentile). The highest reported senior internal auditor salary was $108,271. There are 2 employees at Illinois State Toll Highway Authority with the job title senior internal auditor.