| Ruta 31 | ||||
| Route information | ||||
| Maintained by Puerto Rico DTPW | ||||
| Length | 25.55 km [1] (15.88 mi) | |||
| Existed | 1953 [2] –present | |||
| Major junctions | ||||
| West end | ||||
| East end | ||||
| Location | ||||
| Country | United States | |||
| Territory | Puerto Rico | |||
| Municipalities | Juncos, Las Piedras, Naguabo | |||
| Highway system | ||||
| ||||
Puerto Rico Highway 31 (PR-31) is a main, rural highway connecting Juncos with Naguabo in eastern Puerto Rico. This road begins at Puerto Rico Highway 198 and ends at Puerto Rico Highway 3. [1]
PR-31 is an alternate route for people who are going from Caguas and other nearby towns to Naguabo, without having to pass through Humacao. [3] It is located south of El Yunque and is constantly flooded, even with little rainfall. [4] Several farms are close to this highway and it has two intersections with Puerto Rico Highway 53. Taking PR-30 and PR-53 to Naguabo can be faster depending on the traffic.
| Municipality | Location | km [5] | mi | Destinations | Notes |
|---|---|---|---|---|---|
| Juncos | Ceiba Norte | 25.55 | 15.88 | Continuation beyond PR-30 | |
| Western terminus of PR-31 and eastern terminus of PR-189; PR-30 exit 14; diamond interchange | |||||
| 25.4 | 15.8 | ||||
| 24.6 | 15.3 | ||||
| 23.5– 23.4 | 14.6– 14.5 | ||||
| Gurabo Abajo | 22.8 | 14.2 | |||
| Caimito | 20.0 | 12.4 | |||
| Las Piedras | El Río | 18.2 | 11.3 | ||
| 16.5 | 10.3 | ||||
| Boquerón–El Río line | 14.9 | 9.3 | |||
| Naguabo | Peña Pobre | 14.5 | 9.0 | ||
| 13.3 | 8.3 | ||||
| Río Blanco | 9.7 | 6.0 | |||
| 8.8– 8.7 | 5.5– 5.4 | Puente de Río Blanco over the Río Blanco [6] | |||
| 8.7 | 5.4 | ||||
| 7.9 | 4.9 | PR-53 exit 22; incomplete diamond interchange; southbound exit and northbound entrance | |||
| Río–Maizales line | 6.4 | 4.0 | |||
| 4.2– 4.1 | 2.6– 2.5 | ||||
| Naguabo barrio-pueblo–Duque line | 3.8– 3.7 | 2.4– 2.3 | |||
| Duque–Mariana line | 2.8– 2.7 | 1.7– 1.7 | |||
| Mariana | 0.0 | 0.0 | Eastern terminus of PR-31 | ||
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi | |||||