List of U.S. Highways in Iowa
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Highway markers from different years for former US 32 (1926), US 75 (1961) and current US 151 (1971)
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| System information | |
|---|---|
| Length: | 3,627 mi (5,837 km) |
| Formed: | November 11, 1926 |
| Highway names | |
| US Highways: | US Highway nn (US nn) |
| System links | |
The Iowa Highways Page by Jason Hancock
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Wikipedia