Puerto Rico Highway 870 (PR-870) is a road located entirely in the municipality of Toa Baja, Puerto Rico.

[2] With a length of 2.1 kilometers (1.3 mi), it begins at its intersection with PR-165 and ends at Isla de Cabras, passing through Palo Seco neighborhood.

[1] The entire route is located in Palo Seco, Toa Baja.

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