# Puerto Rico Highway 173

Puerto Rico Highway 173 (PR-173) is a road that travels from Aibonito, Puerto Rico to Guaynabo, passing through Cidra and Aguas Buenas. This highway begins at PR-14 junction in Plata and ends at its intersection with PR-1 and PR-8834 in Río.
* Puerto Rico Highway 173 by municipality
* Heading north in Plata, Aibonito
* Heading north to downtown Cidra between Rabanal and Sud barrios

## Major intersections

* PR-14 east at PR-173 intersection between Plata and Robles barrios, Aibonito
* Northern terminus of PR-173 from PR-1 and PR-8834 intersection in Río, Guaynabo
* Signs for PR-1 and PR-8834 at the northern terminus of PR-173 in Río, Guaynabo
| Municipality | Location | km | mi | Destinations | Notes |
| Aibonito | Robles–Plata line | 0.0 | 0.0 | PR-14 (Carretera Central) – Aibonito, Cayey | Southern terminus of PR-173 |
| Aibonito | Plata | 1.5 | 0.93 | PR-728 – Plata | |
| Aibonito | Plata | 2.1– 2.2 | 1.3– 1.4 | PR-727 – Plata | |
| Cidra | Honduras | 5.8 | 3.6 | PR-7730 – Honduras | |
| Cidra | Rabanal | 6.4– 6.5 | 4.0– 4.0 | PR-775 (Carretera Piñas) – Comerío, Piñas | |
| Cidra | Toíta–Rabanal line | 8.0– 8.1 | 5.0– 5.0 | PR-7775 – Rabanal | |
| Cidra | Rabanal | 9.0 | 5.6 | PR-729 – Rincón, Honduras | |
| Cidra | Sud–Rabanal line | 11.6– 11.7 | 7.2– 7.3 | PR-7733 (Avenida de la Eterna Primavera) – Comerío, Caguas | |
| Cidra | Cidra barrio-pueblo | 12.412.2 | 7.77.6 | PR-172 west (Calle José de Diego) – Comerío | Western terminus of PR-173 concurrency |
| Cidra | Cidra barrio-pueblo | 12.312.5 | 7.67.8 | PR-172 east (Calle José de Diego) – Caguas | Eastern terminus of PR-173 concurrency; one-way street; eastbound access via Calle Miguel Planellas or Calle Vicente Muñoz Barrios |
| Cidra | Bayamón–Ceiba line | 13.8 | 8.6 | PR-782 – Ceiba | |
| Cidra | Monte Llano–Bayamón line | 15.6 | 9.7 | PR-783 – Hacienda Sabanera | |
| Aguas Buenas | Sumidero | 18.7 | 11.6 | PR-7173 – Las Corujas | |
| Aguas Buenas | Mula–Sumidero line | 22.947.6 | 14.229.6 | PR-156 west – Comerío | Western terminus of PR-156 concurrency |
| Aguas Buenas | Aguas Buenas barrio-pueblo | 50.0 | 31.1 | PR-174 – Bayamón | |
| Aguas Buenas | Aguas Buenas barrio-pueblo | 50.323.0 | 31.314.3 | PR-156 east (Calle Luis Muñoz Rivera) – Caguas | Eastern terminus of PR-156 concurrency |
| Aguas Buenas | Bairoa | 25.4 | 15.8 | PR-795 – La Mesa | |
| Aguas Buenas | Sonadora–Bairoa line | 25.5 | 15.8 | PR-792 – Sonadora | |
| Aguas Buenas | Jagüeyes–Sonadora line | 26.0 | 16.2 | PR-793 – Sonadora | |
| Aguas Buenas | Jagüeyes–Sonadora line | 26.0– 26.1 | 16.2– 16.2 | PR-797 east – Jagüeyes | |
| Guaynabo | Río | 32.2 | 20.0 | PR-1 (Carretera Felipe "La Voz" Rodríguez) / PR-8834 (Carretera Central) – San Juan, Caguas | Northern terminus of PR-173 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access ||||||
* 1 2 Kilometer markers represent the distance along PR-172 rather than PR-173.
* 1 2 3 Kilometer markers represent the distance along PR-156 rather than PR-173.

## Related route

Puerto Rico Highway 7173 (PR-7173) is a dead end road that branches off from PR-173 in Sumidero. The entire route is located in Sumidero, Aguas Buenas.
| km | mi | Destinations | Notes |
| 1.3 | 0.81 | Western terminus of PR-7173 at Sector Las Corujas | Western terminus of PR-7173 at Sector Las Corujas |
| 0.0 | 0.0 | PR-173 – Aguas Buenas, Cidra | Eastern terminus of PR-7173 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi ||||