Highest salary at Tdot in year 2018 was $124,714. Number of employees at Tdot in year 2018 was 2,783. Average annual salary was $43,794 and median salary was $39,506. Tdot average salary is 7 percent lower than USA average and median salary is 9 percent lower than USA median salary. From 2017 to 2018, the average salary of employees at this employer increased 14.3 percent, the median salary increased 12.7 percent.