Illinois State Toll Highway Authority
Gis Support Specialist
John Foster in 2025 was employed at Illinois State Toll Highway Authority and had an annual salary of $80,541, according to public records. This salary was 6 percent lower than the average and 10 percent lower than the median salary in Illinois State Toll Highway Authority.
Illinois State Toll Highway Authority records show John Foster held job of Gis Support Specialist from 2020 to 2025.
According to the public records employee's salary increased by $16,766 from 2023 to 2024, which is a 26.3 percent rise. Since 2020, the salary has increased by $20,941, a total rise of 35.1 percent.
| Year | 2025 |
| Full Name | John Foster |
| Job Title | Gis Support Specialist |
| Get Gis Support Specialist Salary Statistics | |
| State | Illinois |
| Employer | Illinois State Toll Highway Authority |
| Annual Wage | $80,541 |
| Pay Plan |
*Information may include where available: salary, bonuses, benefits, retirement contributions, pensions, and other financial data.
| Employer Name | Illinois State Toll Highway Authority |
| Year | 2025 |
| Number of Employees | 1,343 |
| Average Annual Wage | $85,477 |
| Median Annual Wage | $89,045 |
John Foster (2023)Gis Support Specialist | View Person Details |
John Foster (2022)Gis Support Specialist | View Person Details |
John Foster (2021)Gis Support Specialist | View Person Details |
John Foster (2020)Gis Support Specialist | View Person Details |
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