| Kentucky Route 166 | ||||
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| Route information | ||||
| Maintained by KYTC | ||||
| Length: | 13.279 mi (21.370 km) | |||
| Major junctions | ||||
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| East end: |
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| Location | ||||
| Counties: | Fulton | |||
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Kentucky Route 166 (KY 166) is a rural secondary state highway located entirely in Fulton County in western Kentucky. Its western terminus is located at a junction with KY 125 just southeast of Hickman, and its eastern end is located within the city of Fulton at a junction with U.S. Route 51 near that route's intersection with U.S. Route 45.