Welcome Signs of Iowa
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| WB I-74/U.S. Rt. 6 at the Iowa/Illinois State Line, at Bettendorf, IA. (March, 2026) | NB IA 81 at the Iowa/Missouri State Line, near Farmington. (September, 2011) |
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| EB I-480 at the Iowa/Nebraska State Line, at Council Bluffs. (April, 2004) | WB U.S. 136 at the Iowa/Illinois State Line, at Keokuk. (June, 2010) |
Highway markers of Iowa
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A 2-Digit interstate shield. |
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A 3-Digit interstate shield. |
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A U.S. highway shield. |
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A state highway shield. |
 |
A county highway shield. |
Interstate :
U.S. Highways :
- U.S. 6
- U.S. 18
- U.S. 20
- U.S. 30
- U.S. 34
- U.S. 52
- U.S. 59
- U.S. 61
- U.S. 63
- U.S. 65
- U.S. 67
- U.S. 69
- U.S. 71
- U.S. 75
- U.S. 77
- U.S. 136
- U.S. 151
- U.S. 169
- U.S. 218
- U.S. 275
State Highways :
- Highway 1-99 :
- Highway 100-415 :