Corridor studies provide agency-wide planning, programming, and implementation activities for a 25-year to 30-year outlook. A corridor study is critical to the Planning phase of project development as it provides direct linkage from the Statewide Long Range Transportation Plan (SLRTP) vision. TxDOT uses corridor studies as sources of projects for the Metropolitan Transportation Plan (MTP), the Rural Transportation Plan (RTP), and the Unified Transportation Program (UTP).

Such studies establish a shared vision and consensus by allowing stakeholders and communities to set goals and objectives. Corridor studies vary in length and can be evaluated either from a regional perspective or statewide perspective. Corridor studies are effective tools in examining a transportation corridor's existing conditions, developing multimodal future conditions, and providing interim solutions for corridors as they evolve.