It is two-lane per direction all through Cataño and a vast area of Bayamón, and becomes rural a couple of kilometers before entering Naranjito.

This occurs mainly due to an increase in the moisture content of the soil, which loosens the suspended rocks adjacent to the highway.

It has been proposed to make this road fully parallel to the future tollway PR-5, which will be extended until Comerío.

The future tollway will pass through the only cable-suspended bridge in the island in Bayamón near the border with Naranjito.

Puerto Rican rapper and singer Farruko's seventh studio album, La 167, is named after PR-167.