Puerto Rico Highway 100
| Ruta 100 | ||||
| Avenida Antonio J. "Tony" Fas Alzamora | ||||
| Route information | ||||
| Maintained by Puerto Rico DTPW | ||||
| Length | 16.3 km (10.1 mi) | |||
| Major junctions | ||||
| South end | PR-301 in Boquerón | |||
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| North end | PR-2 in Guanajibo | |||
| Location | ||||
| Country | United States | |||
| Territory | Puerto Rico | |||
| Municipalities | Cabo Rojo, Hormigueros | |||
| Highway system | ||||
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Puerto Rico Highway 100 (PR-100) is a secondary highway in southwestern Puerto Rico, located mostly in the municipality of Cabo Rojo. This highway extends from PR-2 in Hormigueros, Puerto Rico and ends at PR-301.