Puerto Rico Highway 647

Puerto Rico Highway 647 (PR-647) is a north–south road located between the municipalities of Corozal and Vega Alta in Puerto Rico. With a length of 12.8 km, it extends from its junction with PR-159 and PR-5568 on the Cibuco–Padilla line in western Corozal, passing through Cienegueta, Candelaria and Bajura barrios until its end at PR-676 in downtown Vega Alta.

Route description
Puerto Rico Highway 647 is mostly a rural road with one lane per direction for its entire length. In Corozal, it has a short length that extends from PR-159 and PR-5568 intersection to the Vega Alta municipal limit and is located entirely within Cibuco barrio. In Vega Alta, PR-647 has a long length, beginning from the Corozal municipal limit and ending at PR-676 in the city center. In this municipality, it crosses Cienegueta, Candelaria and Bajura barrios. PR-647 also crosses the Río Cibuco, and some portions of the Vega State Forest are located on this highway. On 17 March 2022, this road was renamed as Carretera Palmira Cabrera de Ibarra the in honor of the politician from Vega Alta.

History
Prior to its numerical designation, PR-647 was only known as Carretera de Candelaria. The current numerical designation corresponds to the 1953 Puerto Rico highway renumbering, a process implemented by the Puerto Rico Department of Transportation and Public Works (Departamento de Transportación y Obras Públicas) that increased the insular highway network to connect existing routes with different locations around Puerto Rico.