Ohio State Route 166
| Route information | ||||
|---|---|---|---|---|
| Maintained by ODOT | ||||
| Length | 11.40 mi (18.35 km) | |||
| Existed | 1923–present | |||
| Major junctions | ||||
| West end | US 6 near Chardon | |||
| East end | SR 534 / CR 12 near Rock Creek | |||
| Location | ||||
| Country | United States | |||
| State | Ohio | |||
| Counties | Geauga, Ashtabula | |||
| Highway system | ||||
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State Route 166 (SR 166) is an east–west state highway in the northeastern portion of the U.S. state of Ohio. The western terminus of State Route 166 is at a T-intersection with U.S. Route 6 just over 3 miles (4.8 km) northeast of Chardon. Its eastern terminus is at State Route 534 about 5 miles (8.0 km) west of Rock Creek.