Puerto Rico Highway 111 approaches Aguadilla's shore near PR-2 but PR-156, ending in Caguas, is nearly 35 kilometers away from the east coast.

Puerto Rico Highway 5156 (PR-5156) is an east–west avenue located in downtown Orocovis.

Puerto Rico Highway 7156 (PR-7156) is a rural, east–west road between the municipalities of Aguas Buenas and Caguas.

This route is an old portion of PR-156 that connects the new alignment with PR-777 between Bairoa and Cagüitas barrios of Aguas Buenas.

It extends from PR-156 west in Bairoa, Aguas Buenas, to PR-156 east in Cañabón, Caguas.