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 | |||
| ||||
| East end |   PR-1 / PR-176 in El Cinco | |||
| Location | ||||
| Country | United States | |||
| Territory | Puerto Rico | |||
| Municipalities | San Juan | |||
| Highway system | ||||
| ||||
Puerto Rico Highway 21 (PR-21) is the main highway to get to the Medical Center and Veterans Hospital in San Juan, Puerto Rico. It begins in PR-19 in Guaynabo to San Juan before ending in PR-1. [2] [3]
 | This section needs expansion. You can help by adding to it. (September 2013) |
PR-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.
The entire route is located in San Juan.
| 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; [4] 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) / PR-176 south (Avenida Ana G. Méndez) – Río Piedras, Caguas | Eastern terminus of PR-21 | |
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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Puerto Rico Highway 52 (PR-52), a major toll road in Puerto Rico, is also known as Autopista Luis A. Ferré. It was formerly called Expreso Las Américas. It runs from PR-1 in southwest Río Piedras and heads south until it intersects with highway PR-2 in Ponce. At its north end, the short PR-18 continues north from PR-52 towards San Juan. This short segment is known as Expreso Las Américas, the only segment of the route still unofficially bearing this name, since PR-18 is officially named Roberto Sánchez Vilella Expressway. The combined route of PR-18 and PR-52 runs concurrent with the unsigned Interstate Highway PRI-1. Toll stations are located in San Juan, Caguas, Salinas, Juana Díaz, and Ponce.
Puerto Rico Highway 18 (PR-18) is a freeway in Puerto Rico, which is also known as Expreso Las Américas. It runs from its north end at its intersection with PR-22 in San Juan to its south end in Río Piedras where it intersects with PR-1. At this point PR-18 becomes PR-52, known as Autopista Luis A. Ferré.
Puerto Rico Highway 2 (PR-2) is a road in Puerto Rico that connects the cities of San Juan and Ponce. At 156 miles (230 km) long, it is Puerto Rico's longest singled-signed highway.
Puerto Rico Highway 3(PR-3) at nearly 100 miles long, is the second-longest highway on Puerto Rico. 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 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.
Puerto Rico Highway 1 (PR-1) is a highway in Puerto Rico that connects the city of Ponce to San Juan. Leaving Ponce, the road heads east and follows a somewhat parallel route along the southern coast of the island heading towards Salinas. At Salinas, the road turns north to cut through the Cordillera Central in its approach to San Juan. Before reaching San Juan, it climbs to make its way to the mountain town of Cayey and then it winds down into the city of Caguas on its final approach to San Juan.
Puerto Rico Highway 66 (PR-66) is a main tollway which parallels Puerto Rico Highway 3 going from the city of Carolina, Puerto Rico via a 3 loops cloverleaf interchange with PR-26 and PR-3, a major exit in the form of a Trumpet interchange in Canóvanas, Puerto Rico and ending in the municipality of Río Grande, Puerto Rico with an intersection of PR-3. It is only 19.5 kilometres (12.1 mi) long and has very few exits, which work mainly to minimize traffic in the congested Carolina area of PR-3.
Puerto Rico Highway 111 (PR-111) is a highway connecting Aguadilla, Puerto Rico at Puerto Rico Highway 2 and Puerto Rico Highway 115 to Utuado, Puerto Rico at Puerto Rico Highway 140.
Puerto Rico Highway 116 (PR-116) is a main highway in the southwest part of Puerto Rico, beginning in Guánica, Puerto Rico at Puerto Rico Highway 2 to Lajas, Puerto Rico at Puerto Rico Highway 101.
Puerto Rico Highway 177 (PR-177) is a main highway connecting the area of Cupey, San Juan, Puerto Rico to Bayamón, Puerto Rico. It passes through Guaynabo in the area known as Torrimar. It is divided in all of its length. In Bayamón, it ends in the intersection to Puerto Rico Highway 174 and Main Road, which connects to Puerto Rico Highway 2. In Cupey, it ends at Puerto Rico Highway 176.
Puerto Rico Highway 203 (PR-203), also known as the Expreso Chayanne, is a highway which connects Gurabo, Puerto Rico at PR-30 with its parallel route Puerto Rico Highway 183 in San Lorenzo. It is the main route to San Lorenzo and is about 7 kilometers long. It is a dangerous highway, as steep grading is present going down and then going up.
Puerto Rico Highway 189 (PR-189) is a 15 kilometres (9 mi) long main highway which parallels very closely the first half of Puerto Rico Highway 30 from Caguas, Puerto Rico near downtown to Juncos, Puerto Rico passing through all three business centers of Caguas, Gurabo and Juncos. It ends at Puerto Rico Highway 31, and has no direct intersection with Puerto Rico Highway 198 although they are not separated by more than half a kilometer.
Avenida Juan Ponce de León, coextensive as Route PR-25 along its entire length, is one of the main thoroughfares in San Juan, Puerto Rico.
The Carretera Central is a historic north–south central highway in Puerto Rico, linking the cities of San Juan and Ponce by way of Río Piedras, Caguas, Cayey, Aibonito, Coamo, and Juana Díaz. It crosses the Cordillera Central. Plans for the road started in the first half of the 19th century, and the road was fully completed in 1898. At the time the United States took possession of Puerto Rico in 1898, the Americans called it "the finest road in the Western Hemisphere."
Puerto Rico Highway 159 (PR-159) is the main road from Morovis to Toa Alta, passing through the municipality of Corozal, Puerto Rico.
Puerto Rico Highway 139 (PR-139) is a two-way secondary highway in the municipality of Ponce, Puerto Rico.
Puerto Rico Highway 798 (PR-798) is a road located between the municipalities of Caguas, Puerto Rico, and San Juan, and it corresponds to an original segment of the historic Carretera Central. La Concepción Bridge is located on this route.
Puerto Rico Highway 251 (PR-251) is a road located in Culebra, Puerto Rico.
Puerto Rico Highway 176 (PR-176) is a main road in Cupey. It begins at its intersection with PR-175 near Carraízo Lake in Trujillo Alto and ends at PR-1 near downtown Río Piedras.
Puerto Rico Highway 107 (PR-107), or Carretera Pedro Albizu Campos, is a north–south highway located in Aguadilla, Puerto Rico. It extends from PR-2 to Ramey Air Force Base.
Puerto Rico Highway 108 (PR-108) is a road that travels from Mayagüez, Puerto Rico to Añasco. It begins at its intersection with PR-105 in downtown Mayagüez and ends at its junction with PR-109 in eastern Añasco, near Las Marías and San Sebastián. Near this road is located the Mayagüez Zoo.
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