# Puerto Rico Highway 3

Puerto Rico Highway 3 (PR-3) at nearly 100 miles long, is the second-longest highway on Puerto Rico (after PR-2). It connects the San Juan neighborhood of Río Piedras to downtown Salinas indirectly around the eastern coast of the island. Highway 3 ranges from a three lane urban avenue in San Juan to a one lane rural road past Fajardo. While other roads connect San Juan, it runs the coastline of Puerto Rico east of San Juan, beginning in Río Piedras near Santurce (where it is known as the Avenida 65 de Infantería) and goes to Fajardo where it goes south paralleling the coastline to Humacao and Maunabo. It goes up to a mountain-scenic route and goes west to Salinas, where it meets PR-1.

## Route description
### San Juan to Río Grande

PR-3 begins at an intersection with PR-1 in San Juan as the three lane 65th Infantry Regiment Avenue. Heading east through San Juan, Highway 3 functions as an urban boulevard with both at-grade and grade-separated intersections becoming decidedly suburban in character past the PR-26/66 overpass near downtown Carolina. Recently, PR-66 was opened and it has controlled the high traffic on PR-3.
* Exit for Río Piedras, Puerto Rico Highway 3 west
* Puerto Rico Highway 3 and Puerto Rico Highway 188

### Río Grande to Fajardo

It is a divided highway to Fajardo, and the only main highway connecting Fajardo to Río Grande. In Fajardo, PR-53 begins and PR-3 becomes a one-lane per direction rural road, and keeps that way for the rest of its length, though there are some minor divided segments in Humacao near Junquito, a very small segment near Patagonia (close to its intersection with PR-30) and another segment in Arroyo and Guayama for about nearly 10 kilometers.
* PR-3 in Luquillo
* PR-3 in Fajardo

### Municipalities served

The following are the municipalities through which PR-3 passes:
* San Juan
* Carolina
* Canóvanas
* Loíza
* Río Grande
* Luquillo
* Fajardo
* Ceiba
* Naguabo
* Humacao
* Yabucoa
* Maunabo
* Patillas
* Arroyo
* Guayama
* Salinas
Loíza is the only coastal municipality not served by PR-3 in its length through the east shore until its intersection with PR-1 in Salinas. PR-188 serves as the main artery from the highway to Loíza. The remaining coasts of Puerto Rico (west of San Juan and west of Salinas) are served by PR-1 (West Salinas, Santa Isabel, Juana Díaz and East Ponce) and PR-2 (the rest of the coastline though some municipalities are not directly served). In Maunabo and south Yabucoa, PR-3 is not the main "at-grade" artery since it goes up in the mountains. PR-901 is the main at grade road in this segment of about 10 kilometers.
* PR-3 in Humacao close to PR-53 (bridge)
* PR-3 as a rural road in Patillas, several hundred feet above the sea
* PR-3 in Arroyo near Guayama

## Puerto Rico Highway 53

Just like PR-22 parallels PR-2 and PR-52 parallels PR-1, PR-53 is the toll highway which parallels PR-3 and they have several exit intersections. Yet, PR-53 has not been completed and PR-3 serves as the main road in the southeastern part of Puerto Rico going from Yabucoa to Guayama, though PR-901 serves as a primary road (because it is shorter through it) between Yabucoa and Maunabo.

## Major intersections

| Municipality | Location | km | mi | Exit | Destinations | Notes |
| Salinas | Salinas barrio-pueblo | 160.7 | 99.9 | | PR-1 – Ponce, San Juan | Counterclockwise terminus of PR-3; northbound access via Calle Palmer |
| Salinas | Aguirre | 159.7 | 99.2 | | PR-180 (Avenida Pedro Albizu Campos) – Salinas | |
| Guayama | Guayama barrio-pueblo | 140.3 | 87.2 | | PR-54 (Avenida Pedro Albizu Campos) – Salinas, Ponce, San Juan, Arroyo | |
| Guayama | Guayama barrio-pueblo | 139.0 | 86.4 | | PR-15 north (Calle Calimano Martínez) – Cayey | One-way street; northbound access via Calle Ashford |
| Guayama | Guayama barrio-pueblo | 138.0 | 85.7 | | PR-744 south – Machete, Salinas | |
| Guayama | Algarrobo | 135.3– 135.2 | 84.1– 84.0 | | PR-54 south (Avenida Pedro Albizu Campos) / PR-748 – Guayama | |
| Arroyo | Guásimas | 133.4 | 82.9 | | PR-178 (Carretera Monseñor José Antonio Colón Ferrer) – Arroyo | |
| Arroyo | Arroyo barrio-pueblo–Pitahaya– Palmas tripoint | 132.2 | 82.1 | | PR-178 (Calle Pintor Samuel B. Morse) / PR-753 – Arroyo, Pitahaya | |
| Arroyo | Palmas | 129.0 | 80.2 | | PR-53 east (Autopista José M. Dávila Monsanto) – Maunabo | |
| Patillas | Cacao Bajo | 127.0– 126.9 | 78.9– 78.9 | | PR-184 north – Cayey | |
| Patillas | Patillas barrio-pueblo | 125.5 | 78.0 | | PR-181 north (Calle Jesús T. Piñero) – San Lorenzo | One-way street |
| Patillas | Pollos | 122.4 | 76.1 | | PR-53 west (Autopista José M. Dávila Monsanto) – Arroyo | |
| Maunabo | Talante–Emajagua– Maunabo barrio-pueblo tripoint | 108.0 | 67.1 | | PR-760 east (Avenida John F. Kennedy) to PR-901 (Carretera Ernesto Carrasquillo) – Yabucoa | |
| Maunabo | Maunabo barrio-pueblo–Talante– Quebrada Arenas tripoint | 106.9 | 66.4 | | PR-939 – Quebrada Arenas | Southern terminus of the Ruta Panorámica concurrency; the Ruta Panorámica continues toward Yabucoa via Emajagua–Camino Nuevo |
| Yabucoa | Juan Martín | 99.0 | 61.5 | | PR-182 (Ruta Panorámica) – Yabucoa | Northern terminus of the Ruta Panorámica concurrency; the Ruta Panorámica continues toward San Lorenzo |
| Yabucoa | Juan Martín | 97.8– 97.7 | 60.8– 60.7 | | PR-901 (Ruta Panorámica) – Yabucoa | |
| Humacao | Candelero Arriba–Candelero Abajo– Buena Vista tripoint | 86.3 | 53.6 | | PR-906 east (Avenida Luis M. Castro Díaz) to PR-53 (Autopista Dr. José Celso Barbosa) – Yabucoa, Fajardo | PR-53 exits 35 and 35A |
| Humacao | Cataño | 83.0 | 51.6 | | PR-909 west to PR-30 (Expreso Cruz Ortiz Stella) – Yabucoa, Las Piedras, Mariana | PR-30 exit 28 |
| Humacao | Cataño | 82.5– 82.4 | 51.3– 51.2 | | PR-908 west (Carretera Profesor Gilberto Rivera Ortiz) to PR-30 (Expreso Cruz Ortiz Stella) – Las Piedras, Yabucoa | PR-30 exit 26 |
| Humacao | Humacao barrio-pueblo | 82.3 | 51.1 | | PR-3R east (Bulevar Nicanor Vázquez) – Ceiba | |
| Humacao | Humacao barrio-pueblo | 81.7 | 50.8 | | PR-198 west (Avenida Cruz Ortiz Stella) to PR-924 (Calle Dufresne) – Las Piedras | One-way street |
| Humacao | Humacao barrio-pueblo | 80.9 | 50.3 | | PR-3R south (Bulevar Nicanor Vázquez) – Yabucoa | |
| Humacao | Río Abajo | 80.5 | 50.0 | | PR-60 west (Expreso Dionisio Casillas) – Caguas | |
| Humacao | Río Abajo | 79.4– 79.3 | 49.3– 49.3 | | PR-53 (Autopista Dr. José Celso Barbosa) – Yabucoa, Fajardo | PR-53 exit 31; partial cloverleaf interchange |
| Naguabo | Río Santiago | 69.0 | 42.9 | | Puente No. 122 | Puente No. 122 |
| Naguabo | Húcares | 68.2 | 42.4 | | PR-192 – Naguabo | |
| Naguabo | Mariana | 63.9– 63.8 | 39.7– 39.6 | | PR-31 (Carretera Carmen Delia Dipiní Piñero) – Naguabo | |
| Ceiba | Quebrada Seca | 59.6– 59.5 | 37.0– 37.0 | | PR-53 (Autopista Dr. José Celso Barbosa) – Fajardo, Humacao | PR-53 exit 10; diamond interchange |
| Fajardo | Quebrada Vueltas | 48.0 | 29.8 | | PR-194 – Fajardo | Roundabout |
| Fajardo | Quebrada Vueltas | 47.9 | 29.8 | | PR-53 south (Autopista Dr. José Celso Barbosa) – Humacao | |
| Fajardo | Fajardo barrio-pueblo | 46.4 | 28.8 | — | PR-195 (Calle Garrido Morales) – Fajardo | Diamond interchange |
| Fajardo | Quebrada Fajardo | 43.7 | 27.2 | | PR-194 east (Avenida General Antonio Valero de Bernabé) / PR-940 – Fajardo | |
| Luquillo | Luquillo barrio-pueblo | 38.1 | 23.7 | — | PR-193 / PR-992 – Luquillo, Sabana | Diamond interchange |
| Luquillo | Mata de Plátano | 36.0 | 22.4 | — | PR-193 – Balneario de Luquillo | Diamond interchange |
| Río Grande | Mameyes II | 31.4 | 19.5 | | PR-191 – El Yunque National Forest, Palmer | |
| Río Grande | Guzmán Abajo | 25.7– 25.6 | 16.0– 15.9 | | PR-186 – Guzmán Arriba | |
| Río Grande | Guzmán Abajo | 25.1 | 15.6 | 25 | PR-66 west (Autopista Roberto Sánchez Vilella) to PR-956 – Guzmán Abajo, Carolina, San Juan PR-187 north – Río Grande | |
| Río Grande | Ciénaga Baja | 24.2– 24.1 | 15.0– 15.0 | | To PR-187R (Calle Pimentel) – Río Grande | |
| Loíza | No major junctions | No major junctions | No major junctions | No major junctions | No major junctions | No major junctions |
| Canóvanas | Canóvanas | 18.9 | 11.7 | | PR-188 north – Loíza, San Isidro PR-9188 to PR-66 (Autopista Roberto Sánchez Vilella) – Carolina, San Juan, Río Grande, Fajardo | PR-66 exit 14; unsigned |
| Canóvanas | Canóvanas barrio-pueblo | 17.3 | 10.7 | — | PR-185 – Canóvanas, Juncos | Partial cloverleaf interchange |
| Carolina | Río Grande de Loíza | 11.8– 11.6 | 7.3– 7.2 | Puente Julia de Burgos | Puente Julia de Burgos | Puente Julia de Burgos |
| Carolina | Martín González | 10.5 | 6.5 | | PR-887 west – Carolina, Martín González, Saint Just | |
| Carolina | San Antón | 8.4 | 5.2 | — | PR-26 north (Expreso Román Baldorioty de Castro) / PR-Avenida Jesús M. Fragoso – San Juan, Aeropuerto PR-66 east (Autopista Roberto Sánchez Vilella) – Canóvanas, Fajardo | |
| Carolina | San Antón | 7.9– 7.8 | 4.9– 4.8 | | PR-190 / PR-8887 – Carolina | |
| San Juan | Sabana Llana Sur–Sabana Llana Norte line | 6.3 | 3.9 | — | PR-8 north (Avenida Ramal Este) – San Juan, Aeropuerto, Hato Rey | Partial cloverleaf interchange |
| San Juan | Sabana Llana Sur–Sabana Llana Norte line | 3.3 | 2.1 | | PR-47 (Calle De Diego) – Río Piedras | |
| San Juan | Sabana Llana Sur | 2.5 | 1.6 | | PR-181 (Expreso Manuel Rivera Morales) – Trujillo Alto, San Juan, Aeropuerto, Hato Rey | Diamond interchange |
| San Juan | Sabana Llana Sur–Pueblo line | 1.3 | 0.81 | | PR-27 north (Avenida José Celso Barbosa) – Río Piedras | |
| San Juan | Pueblo–Hato Rey Sur line | 0.2 | 0.12 | — | PR-25 north (Avenida Juan Ponce de León) – Río Piedras | |
| San Juan | Hato Rey Sur | 0.0 | 0.0 | — | PR-1 – Hato Rey, Caguas | Clockwise terminus of PR-3 |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus Incomplete access |||||||

## Related route

Puerto Rico Highway 3R (Spanish: Carretera Ramal 3, abbreviated Ramal PR-3 or PR-3R) is a bypass near downtown Humacao, Puerto Rico. This road is part of Nicanor Vázquez Boulevard. The entire route is located in Humacao barrio-pueblo, Humacao.
| km | mi | Destinations | Notes |
| 1.4 | 0.87 | PR-3 | Western terminus of Ramal PR-3; access to Yabucoa; unsigned |
| 0.0 | 0.0 | PR-3 | Eastern terminus of Ramal PR-3; access to Fajardo |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi ||||