Alternative Fuel Corridors

Through the Federal Highway Administration’s Alternative Fuel Corridor Program, every interstate in Texas, and several other key highways, have been designated as alternative fuel corridors. Corridor designation means that a driver could travel that roadway in the designated alternative fuel vehicle and be confident that refueling facilities for that fuel are available (e.g., electric charging stations are available on electric corridors). Designated alternative fuels include electricity, hydrogen, compressed natural gas, liquified natural gas, and propane (LPG).  

NCTCOG/Dallas-Fort Worth Clean Cities (DFWCC) initiatives involving alternative fuel corridors since 2016 include:


  • National Alternative Fuel Corridor Council: DFWCC participates in this effort to coordinate across state lines and support implementation of signage.  
  • National Electric Vehicle Infrastructure (NEVI) Formula Program/Texas EV Charging Plan: Staff is coordinating closely with the Texas Department of Transportation (TxDOT) to implement this program in Texas. 
  • Implementation of the IH-45 Corridor Zero Emission Vehicle Plan: Staff hopes to move plan recommendations to reality and is seeking partners and resources to advance projects. Contact for more information.
  • Houston to Los Angeles (H2LA) – I-10 Hydrogen Corridor:  NCTCOG/DFWCC is a team member in a Department of Energy (DOE)-funded grant proposal led by GTI Energy to develop a nationally scalable, hydrogen fueling station infrastructure deployment planning process using a megaregion analysis.  The plan will encompass the I-10 corridor as well as the “Texas Triangle” of I-35 and I-45.   


  • IH-45 Corridor Zero Emission Vehicle Plan (published August 2022): Staff developed this plan recommending placement of electric charging and hydrogen fueling infrastructure along Interstate 45 with heavy stakeholder input. The plan has a focus on enabling medium- and heavy-duty zero-emissions vehicles, especially in the freight sector. 
  • South Central Alternative Fuel Corridor Convening: DFWCC co-hosted this workshop-style event that allowed for coordination and discussion among stakeholders in Texas, Louisiana, Arkansas, and Oklahoma. This event was sponsored by the Federal Highway Administration.   
  • Comments on the Proposal Manual of Uniform Traffic Control Devices: NCTCOG provided recommendations for standardized corridor identification, general service, and specific service signs across all alternative fuel corridors. To read the full comments, visit the NCTCOG comments page.  
  • Corridor Nominations: NCTCOG/DFWCC has made recommendations for corridor designation since the initial nomination cycle in 2016.  In the first nomination round, NCTCOG/DFWCC submitted the most extensive nomination packet from the State of Texas, nominating a network of interstates that encompassed the entire state. Since then, TxDOT has had primary responsibility for submittals, and staff has provided input for TxDOT consideration. For the full list and descriptions of designated highways, visit this Federal Highway Administration (FHWA) website and scroll down to Texas.

Background & Current Highway Designations 

The U.S. Department of Transportation, under Title 23 U.S. Code Section 151, is required to designate national corridors for EV charging and hydrogen, propane, and natural gas fueling. This program, known as the Alternative Fuel Corridors program, is led by the FHWA which works with other federal, state, and local officials (such as NCTCOG and DFWCC) and private industry to help plan and promote National Highway System corridors. This program was first established under the FAST Act and expanded by the Infrastructure Investment and Jobs Act (Public Law 117-58, also known as the Bipartisan Infrastructure Law), which provides further guidance and funding for alternative fuel corridors, particularly for electric vehicles.  

One of two designations is used for each nominated highway segment: corridor-ready and corridor-pending. Corridor-ready is reserved for sections of highway that meet all corridor standards, while corridor-pending is for sections that have some infrastructure and meet some standards. Criteria for corridor-ready and corridor-pending National Highway System segments for each alternative fuel type can be found in the 2022 Request for Nominations. After TxDOT submits corridor nominations, the FHWA reviews the nomination materials and issues designations. The FHWA has completed six rounds of Alternative Fuels Corridor Designations from 2016-2022.  

State Designations:  

  • 16 Interstate Highways 
  • 1 U.S. Highway  
  • 1 State Highway  
  • 13,000 miles of National Highway System (all fuels combined).  

Federal Designations: 

  • 125 nominations from state and local officials  
  • Segments or entire lengths of 134 interstate corridors and 125 U.S. highways and state roads  
  • All 50 states (plus District of Columbia and Puerto Rico) designated as Corridor-Ready or Corridor-Pending for one or more alternative fuel types 
  • More than 165,000 miles of National Highway System designated total (all fuels combined) 

Further Resources 

  • Alternative Fuel Toolkit - can be used to learn about alternative fuels and infrastructure, plan infrastructure funding, and act using alternative fuel vehicle guides and information provided by the FHWA.  
  • Alternative Fueling Station Locator - provides data on alternative fuel stations in the United States and Canada. This tool has many functionalities and can help drivers plan a trip based on available fueling infrastructure. It can also help communities plan for additional alternative fuel infrastructure.  
  • Alternative Fuels Data Center - contains extensive information about alternative fuels, alternative fuel vehicles, and laws and incentives as well as maps, data, and publications on numerous alternative fuel subjects. 
  • TxDOT Alternative Fuel Station Signage Policy - outlines the current guidance on posting signage for alternative fuel stations in Texas. 
  • DFW Clean Cities Initiatives page - learn about other ongoing projects