Puerto Rico Highway 21
Highway in Puerto Rico
From Wikipedia, the free encyclopedia
Puerto Rico Highway 21 (PR-21) is the main highway to get to the Medical Center and Veterans Hospital in San Juan, Puerto Rico. Its western terminus is located at PR-19 intersection near Guaynabo and leads to San Juan before ending at PR-1 junction near Río Piedras.[2][3]
PR-19 in Gobernador Piñero
PR-20 in Monacillo Urbano–Gobernador Piñero
PR-841 in Gobernador Piñero–Monacillo Urbano
PR-18 in Monacillo Urbano
 Highway 21 | ||||
|---|---|---|---|---|
| Ruta 21 | ||||
| Route information | ||||
| Maintained by Puerto Rico DTPW | ||||
| Length | 5.0 km[1] (3.1 mi) | |||
| Major junctions | ||||
| West end | PR-19 in Gobernador Piñero | |||
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| East end |   PR-1 / PR-176 in El Cinco | |||
| Location | ||||
| Country | United States | |||
| Territory | Puerto Rico | |||
| Municipalities | San Juan | |||
| Highway system | ||||
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Route description
With a length of about 5.0 kilometers (3.1 mi), PR-21 begins at its intersection with PR-1 and PR-176 in El Cinco, a barrio located south of Río Piedras. To the west, PR-21 is an avenue with three lanes per direction until its interchange with Puerto Rico Highway 18 in Monacillo Urbano. From there, the highway narrows to two lanes per direction until its junction with Avenida José de Diego, where it reduces to a single lane per direction to the west. Between Monacillo Urbano and Gobernador Piñero barrios, the road has an intersection with PR-841, which leads to PR-177 between San Juan and Guaynabo, and also has an access to PR-20 south, which leads to Guaynabo. Then, its western terminus is located at PR-19 in Gobernador Piñero barrio, just at the entrance to Martínez Nadal station of the Tren Urbano.[1]
- Puerto Rico Highway 21
Heading west
Westbound sign
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History
Puerto Rico Highway 6 was previously numbered as PR-21. Perhaps there were plans to connect current PR-21 to current PR-6, but such plans were never realized.[4] Instead, the Tren Urbano tracks were built between Bayamón, Caparra, Torrimar and PR-20.
Major intersections
The entire route is located in San Juan.
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| Location | km[1] | mi | Destinations | Notes | |
|---|---|---|---|---|---|
| Gobernador Piñero | 5.0 | 3.1 |  PR-19 (Avenida Luis Vigoreaux) – Guaynabo | Western terminus of PR-21 | |
| Gobernador Piñero–Monacillo Urbano line | 4.8– 4.7 | 3.0– 2.9 |  PR-20 (Expreso Rafael Martínez Nadal) – Guaynabo | No entrance ramp to PR-20 northbound | |
| 3.4 | 2.1 |  PR-841 (Calle San Ignacio) – Guaynabo | |||
| Monacillo Urbano | 2.4 | 1.5 |  PR-Avenida José de Diego – San Juan, Puerto Nuevo | Eastern terminus of PR-21 through Carretera Roberto Clemente Walker;[5] western terminus of PR-21 through Avenida Ingeniero José "Kiko" Custodio | |
| 1.5 | 0.93 | PR-Avenida Centro Médico – San Juan | Partial cloverleaf interchange | ||
| 1.2– 1.1 | 0.75– 0.68 |  PR-18 (Expreso Las Américas) – San Juan, Caguas, Ponce | PR-18 exits 7A and 7B; partial cloverleaf interchange | ||
| El Cinco | 0.0 | 0.0 | PR-1 (Carretera Felipe "La Voz" Rodríguez) – Río Piedras, Caguas | Eastern terminus of PR-21 and northern terminus of PR-176 | |
 PR-176 south (Avenida Ana G. Méndez) | Continuation beyond PR-1 | ||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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