| Kentucky Route 139 | ||||
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| Route information | ||||
| Maintained by KYTC | ||||
| Length: | 31.122 mi (50.086 km) | |||
| Major junctions | ||||
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| North end: |
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| Location | ||||
| Counties: | Trigg, Crittenden, Caldwell | |||
| Highway system | ||||
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US 68 / KY 80 near Cadiz![]()
US 68 Bus. in downtown Cadiz
I-24 in rural southern Caldwell County![]()
US 62 / KY 91 in Princeton
I-69 at Princeton
KY 91 north of Princeton