The list contains all mainline (1-2 digit) Interstate Highways in the mainland United States as of 7 September 2016 and as such may not reflect recent changes.
What is your favorite mainline Interstate Highway?
2
4
5
8
10
12
15
16
17
19
20
22
24
25
26
27
29
30
35
37
39
40
41
43
44
45
49
55
57
59
64
65
66
68
69
70
71
72
73
74
75
76 (Eastern)
76 (Western)
77
78
79
80
81
82
83
84 (Eastern)
84 (Western)
85
86 (Eastern)
86 (Western)
87
88 (Eastern)
88 (Western)
89
90
91
93
94
95
96
97
99