Puerto Rico Highway 171
| Ruta 171 | ||||
| Route information | ||||
| Maintained by Puerto Rico DTPW | ||||
| Length | 8.3 km (5.2 mi) | |||
| Existed | 1953–present | |||
| Major junctions | ||||
| South end | PR-14 in Cayey barrio-pueblo | |||
| North end | PR-172 / PR-734 in Cidra barrio-pueblo | |||
| Location | ||||
| Country | United States | |||
| Territory | Puerto Rico | |||
| Municipalities | Cayey, Cidra | |||
| Highway system | ||||
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Puerto Rico Highway 171 (PR-171) is a road that travels from Cidra, Puerto Rico to Cayey. It begins at its intersection with PR-172 in downtown Cidra and ends at its junction with PR-14 near downtown Cayey.