Interstate 15 in Barstow, California,
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Interstate 17 in Flagstaff, Arizona,
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Interstate 25 in Albuquerque, New Mexico,
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Interstate 27 in Amarillo, Texas,
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Interstate 35 in Oklahoma City, Oklahoma,
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Interstate 44 in Oklahoma City, Oklahoma,
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Interstate 30 in North Little Rock, Arkansas,
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Interstate 55 in West Memphis, Arkansas (the freeways are merged throughout the city),
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Proposed Interstate 69 in Memphis, Tennessee,
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Interstate 24 in Nashville, Tennessee (merged for approximately 2 miles),
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Interstate 65 in Nashville, Tennessee (merged for approximately 3 miles),
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Interstate 75 near Dixie Lee Junction, Tennessee. They stay merged until Knoxville, Tennessee,
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Interstate 81 near Dandridge, Tennessee,
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Interstate 26 in Asheville, North Carolina,
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Interstate 77 in Statesville, North Carolina,
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Future Interstate 74 in Winston-Salem, North Carolina,
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Future Interstate 73 in Greensboro, North Carolina,
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Interstate 85 in Greensboro, North Carolina. They stay merged until Hillsborough, North Carolina,
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Interstate 95 in Benson, North Carolina,
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