Arkansas Highway 166
| Route information | ||||
|---|---|---|---|---|
| Maintained by ArDOT | ||||
| Section 1 | ||||
| Length | 7.97 mi (12.83 km) | |||
| South end | AR 361 at Davidsonville Historic State Park | |||
| North end | US 62 in Pocahontas | |||
| Section 2 | ||||
| Length | 14.57 mi (23.45 km) | |||
| South end | Future I-57 / US 62 / US 67 in Pocahontas | |||
| North end | Route A / Route Y at Missouri state line | |||
| Location | ||||
| Country | United States | |||
| State | Arkansas | |||
| Counties | Randolph | |||
| Highway system | ||||
| ||||
Arkansas Highway 166 is a designation for two state highways in Randolph County, Arkansas. The southern segment of 7.97 miles (12.83 km) runs from Old Davidsonville State Park to Pocahontas. A northern segment of 14.57 miles (23.45 km) runs north from US 62/US 67 to the Missouri state line.