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All U.S. Interstates

How many of the numbers can you name?
Includes auxiliary routes and suffixed routes
Includes Alaska, Hawaii, and Puerto Rico routes
Not including former, business, or proposed routes
For repeated routes, only one number is given
Quiz by Polen
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Last updated: November 20, 2024
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First submittedNovember 20, 2024
Times taken35
Average score39.4%
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Number
2
4
5
8
10
11
12
14
15
16
17
19
20
22
24
25
26
27
29
30
35
35E
35W
37
39
40
41
42
Number
43
44
45
49
55
57
59
64
65
66
68
69
69C
69E
69W
70
71
72
73
74
75
76
77
78
79
80
81
82
Number
83
84
85
86
87
88
89
90
91
93
94
95
96
97
99
105
110
115
124
126
129
135
140
155
165
169
170
172
Number
175
176
180
182
184
185
189
190
194
195
196
205
210
215
220
225
229
235
238
240
244
255
264
265
269
270
270 Spur
Number
271
275
276
277
278
279
280
283
285
287
290
291
293
294
295
296
305
310
315
335
344
345
355
359
369
370
375
Number
376
380
381
384
385
390
391
393
394
395
405
410
430
435
440
444
459
464
465
469
470
471
474
475
476
478
480
Number
480N
481
485
490
494
495
495X
496
505
510
516
520
526
530
535
540
555
564
565
575
579
580
581
585
587
590
595
Number
605
610
630
635
640
664
670
675
676
678
680
684
690
691
694
695
696
705
710
759
780
781
785
787
790
794
795
Number
805
820
840
865
878
880
885
890
894
895
895A
895B
910
980
985
990
A1
A2
A3
A4
H1
H2
H3
H201
PR1
PR2
PR3
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