| Division |
Telephone | |
| Aviation | (512) 416-4500 | |
| Bridge |
(512) 416-2278 | |
| Communications |
(512) 305-9568 | |
| Construction | (512) 416-2500 | |
| Design | (512) 416-2653 | |
| Environmental Affairs | (512) 416-3001 | |
| Finance | (512) 416-5555 | |
| General Services | (512) 302-2401 | |
| Human Resources | (512) 486-5304 | |
| Information Technology | (512) 416-3048 | |
| Maintenance | (512) 416-3048 | |
| Occupational Safety | (512) 416-3385 | |
| Public Transportation | (512) 374-5230 | |
| Rail | (512) 486-5230 | |
| Right of Way | (512) 416-2901 | |
| Strategic Projects | (512) 936-0980 | |
| Toll Operations | 1 (888) 468-9824 | |
| Traffic Operations | (512) 416-3200 | |
| Transportation Planning | (512) 486-5003 | |
| Travel Information | (512) 486-5900 |