[3] It extends from Puerto Rico Highway 2 north of Añasco to Ramey Air Force Base.

[4] Currently, PR-110 has two branches in its old segments in Aguadilla and Moca and it also has another one between the two municipalities.

Puerto Rico Highway 4010 (PR-4010) is an old segment of PR-110 that provides access to a small residential area between Aguacate and Maleza Alta in Aguadilla.

Puerto Rico Highway 4110 (PR-4110) is a spur route of PR-110 between Moca and Aguadilla.

This Puerto Rico road-related article is a stub.