Study overview
TxDOT works to deliver a safe, reliable and integrated transportation system. The Interstate
35 (I-35) Texas Corridor Study was initiated by the TxDOT - Transportation Planning and Programming (TPP) Division as a long term, comprehensive analysis of the I-35 Texas Corridor from an intermodal and multimodal approach. The Mainstreet of Texas, I-35 supports Texas’ growing population, employment, economy and quality of life, with nearly half of Texas’ population living and working along the corridor. The study includes the entire I-35 Texas Corridor from the Oklahoma State line to the Mexico international border for approximately 591 miles. I-35 stretches across Texas with approximately four to 10 main lanes in addition to frontage roads in the urban and metropolitan areas with discontinuous frontage roads in the rural areas.
I-35 is one of the most significant corridors within Texas and is critical to maintaining a regional, state-wide, national and international transportation system that is safe, efficient and responsive to growth.
Building upon current investments, the I-35 Texas Corridor Study will identify existing gaps and evolving multimodal transportation needs and opportunities. Through data-informed analysis and collaborative stakeholder engagement, the study will develop prioritized solutions including projects, policies, programs or regional planning studies that address challenges, intermodal coordination and emerging technologies across urban, rural and border areas for the next 25 years.
I-35 Texas Corridor Study Area Map
Key considerations
The study will consider the following key elements to identify and prioritize proposed improvements along the corridor:
- Safety
- Connectivity
- Mobility and Reliability
- Asset Preservation
- Operations and Emerging
- Technologies
- Freight
- Cost and Funding
- Resiliency
- Multimodal
- Intermodal
Study approach
TxDOT will conduct technical analyses and engage local elected officials, regional organizations, state and federal agencies, industry and business representatives, advocacy groups, members of the public and other stakeholders throughout the study process from Spring 2025 to Summer 2026. The study will be conducted in phases with four rounds of stakeholder engagement meetings. The phases will evaluate and assess existing conditions and needs, develop strategies and a prioritization framework, identify and prioritize future improvements and develop an implementation plan, as shown in the schedule.
