| United States Numbered Highways of the Trunk Highway System | |
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Highway markers from different years for former US Highway 10N (1926), former US 210 (1961) and current US Highway 61 (1971)
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| System information | |
| Formed: | November 11, 1926 |
| Highway names | |
| US Highways: | US Highway nn (US nn) |
| System links | |
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