Puerto Rico Highway 173 (PR-173) is a road that travels from Aibonito, Puerto Rico to Guaynabo, passing through Cidra and Aguas Buenas.

[4] This highway begins at PR-14 junction in Plata and ends at its intersection with PR-1 and PR-8834 in Río.

[5] Puerto Rico Highway 7173 (PR-7173) is a dead end road that branches off from PR-173 in Sumidero.

[7] The entire route is located in Sumidero, Aguas Buenas.

This Puerto Rico road-related article is a stub.