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The U.S. Department of Transportation’s Federal Highway Administration (FHWA) has designated alternative fuel corridors, a national network of alternative fueling and charging infrastructure, along the National Highway System. Designation of the corridors began in 2016 and has expanded each year since then, for a total of more than 145,000 miles over 119 Interstates and 100 U.S. highways/state roads. The fuels for which corridors have been designated include electricity, compressed natural gas (CNG), liquefied natural gas (LNG), propane (LPG), and hydrogen. The FHWA has interactive maps showing corridors and pending corridors for each fuel. Two static-picture examples of the interactive maps are shown below.

Examples of CNG and LPG Alternative Fuel Corridors

Map of U.S. showing compressed natural gas corridors (CNG-Round 1, 2, 3 and 4)
Map of U.S. showing corridors of liquefied petroleum gas (LPG or Propane-Round 1, 2, 3 and 4)

Source: U.S. Department of Transportation, Federal Highway Administration, Alternative Fuel Corridors, accessed August 19, 2020.

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