Puerto Rico Highway 66
| Ruta 66 | ||||
| Autopista Roberto Sánchez Vilella | ||||
PR-66 highlighted in red | ||||
| Route information | ||||
| Maintained by Metropistas | ||||
| Length | 19.5 km (12.1 mi) | |||
| Existed | 2006–present | |||
| Major junctions | ||||
| West end | PR-3 / PR-26 in San Antón | |||
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| East end | PR-3 / PR-187 in Guzmán Abajo | |||
| Location | ||||
| Country | United States | |||
| Territory | Puerto Rico | |||
| Municipalities | Carolina, Canóvanas, Río Grande | |||
| Highway system | ||||
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Puerto Rico Highway 66 (PR-66) is a main tollway which parallels Puerto Rico Highway 3 going from the city of Carolina, Puerto Rico via a 3 loops cloverleaf interchange with PR-26 and PR-3, a major exit in the form of a Trumpet interchange in Canóvanas, Puerto Rico and ending in the municipality of Río Grande, Puerto Rico with an intersection of PR-3. It is only 19.5 kilometres (12.1 mi) long and has very few exits, which work mainly to minimize traffic in the congested Carolina area of PR-3.
The highway is called the Roberto Sánchez Vilella Expressway, which is also the name given to the much larger PR-2 freeway segment from Hormigueros to Ponce. The second phase of PR-66 from Canóvanas to Río Grande was opened on 1 October 2012.