List of Interstates

List of one- and two-digit interstate highways in the United States:

• Interstate 4
• Interstate 5
• Interstate 8
• Interstate 10
• Interstate 12
• Interstate 15
• Interstate 16
• Interstate 17
• Interstate 19
• Interstate 20
• Interstate 24
• Interstate 25
• Interstate 26
• Interstate 27
• Interstate 29
• Interstate 30
• Interstate 35
• Interstate 37
• Interstate 39
• Interstate 40
• Interstate 43
• Interstate 44
• Interstate 45
• Interstate 49
• Interstate 55
• Interstate 57
• Interstate 59
• Interstate 64
• Interstate 65
• Interstate 66
• Interstate 68
• Interstate 69
• Interstate 70
• Interstate 71
• Interstate 72
• Interstate 73
• Interstate 74
• Interstate 75 (See Also: Alligator Alley)
• Interstate 76
• Interstate 77
• Interstate 78
• Interstate 79
• Interstate 80
• Interstate 81
• Interstate 82
• Interstate 83
• Interstate 84
• Interstate 85
• Interstate 86
• Interstate 87
• Interstate 88
• Interstate 89
• Interstate 90
• Interstate 91
• Interstate 93
• Interstate 94
• Interstate 95
• Interstate 96
• Interstate 97
• Interstate 99
• Interstate 238 (an unusual exception to the rules)

Hawaii interstates include:

• Interstate H-1
• Interstate H-2
• Interstate H-3

Note: Three-digit interstates (with the exception of I-238) are to be discussed in the same article as the one- or two-digit interstate that the three-digit interstate is a spur or loop of, even if plans to build the connection between the "spur" and the main highway never materialized. For example, I-170 is discussed in the I-70 article, and I-278 in New York and New Jersey is discussed in the I-78 article, even though no connection exists between I-78 and any of its spurs or loops. I-238 is an exception because it is not a loop or spur of any one- or two-digit interstate (no I-38 exists anywhere near I-238).