Before a project is built, a study must be done to determine if it will fill a transportation need, will not negatively impact the surrounding area and fits the department's overall plan. During the study phase, potential projects are analyzed to determine if they are cost effective, while also efficiently improving mobility. Some of these projects have moved beyond the study phase and are under construction.
Highway Projects
| Location | Project | Description |
| East Texas | I-20 East Texas Corridor | Evaluation of current safety and capacity needs from Dallas to the Louisiana border |
| East Texas | I-30 East Texas Corridor | Studies needs in northeast Texas along I-30 from FM 2642 to the Texas/Arkansas state line |
| South Texas | Texas-Mexico Border Crossings | Examines options to relieve congestion at Texas-Mexico border crossings |
| South Texas | I-37 Corridor |
Evaluation of I-37 from I-410 in San Antonio to I-69E in Corpus Christi to develop improvement programs |
| Statewide | US 190 and I-10 | Evaluates options for a corridor from Louisiana to El Paso |
| West Texas | Ports-to-Plains Corridor | Examines transportation options from Laredo to Amarillo |
Rail Projects
| Location | Project | Description |
| North Texas | Dallas/Fort Worth Core Express Service | Proposed passenger rail service connecting the Dallas and Fort Worth areas |
| Statewide | Proposed high-speed rail between the Dallas and Houston areas. | |
| Statewide | Texas-Oklahoma Passenger Rail |
Evaluation of a range of passenger rail service options in an 850-mile corridor from Oklahoma City to south Texas. |
| West Texas | West Texas Freight Rail |
Studies the needs for freight rail in the West Texas area |
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