Corpus Christi
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.
| Location | Project | Description |
| Corpus Christi | Harbor Bridge | Long-term plan to potentially replace the Harbor Bridge |
| Corpus Christi | I-37 | Proposed upgrades to I-37 from Redbird Lane to US 77 |
| Corpus Christi | SH 286 | Proposed improvements to SH 286 from FM 43 to FM 2444 |
| Corpus Christi | SH 358 | Construction of improvements to enhance safety and increase mobility |
| Goliad County | US 59 San Antonio River Bridge Replacement Project | Proposed replacement of the U.S. Highway (US) 59 bridge over the San Antonio River |
| Gregory, Portland and Ingleside | SH 361 | A feasibility study is to identify opportunities to better connect US 181 and SH 361 while also improving safety and mobility. |
| Karnes City | SH 80 | Proposed widening of SH 80 from the intersection of SH 80 and SH 123 to US 181 |
| Nueces County | FM 70 | Proposed improvements to FM 70 from the SH 286/FM 70 intersection to US 77 and on SH 286 from south of FM 244 to FM 70 |
| Portland | FM 893 | Proposed improvements to FM 893 (Moore Ave) from CR 3685 (Stark Road) to 0.2 miles west of CR 79 (Gum Hollow) |
| Premont | US 281 | Upgrade to meet interstate highway standards |
| San Patricio County | US 77 Odem Area Planning Study | Planning efforts to extend Interstate 69 East (I-69E) from Corpus Christi northward |
| San Patricio County | US 77 Sinton Improvement Project | Proposed improvements to US 77 from Business US Highway (BU) 77 South to Business US Highway (BU) 77 North |
| South Texas | US 77 Upgrade | Upgrade between Corpus Christi and Harlingen to meet interstate highway standards |
| Woodsboro/Refugio | US 77 | Proposed improvements to US 77 in Woodsboro and Refugio area |