|Puerto Rico Highway System|
|Interstates||Intrastate PRnn (PRI-nn) (unsigned)|
|Commonwealth:||Puerto Rico Highway nn (PR-nn)|
The highway system in Puerto Rico is composed of approximately 14,400 kilometers (8,900 mi) of roads in Puerto Rico, maintained by the Puerto Rico Department of Transportation and Public Works (Spanish: Departmento de Transportación y Obras Públicas) or DTOP. The highway system in Puerto Rico is divided into four networks: primary, urban primary, secondary or inter-municipal, and tertiary or local (Spanish: red primaria, red primaria urbana, red secundaria o intermunicipal, and red terciaria o local). Highways may change between networks and retain their same numbers.
In this regard, a primary road is one which is part of the primary network, an urban primary road is part of the urban primary network, etc. Generally, the same highway may change between networks, but the highway will continue to have the same number. For example, PR-1, connecting Ponce and San Juan, is signed as urban primary inside the Ponce city limits, then it is signed as secondary in Ponce's rural barrio Capitanejo, and then it is again signed as urban primary on its entry into the town of Santa Isabel.
Primary roads are numbered 1 through 99, secondary roads are numbered 100 to 299, and tertiary roads are numbered 300 to 9999. In 2009, primary routes comprise about 14% of the total Commonwealth system mileage, secondary about 30%, and tertiary (municipal) about 56% of the total mileage.
|Highway type/network||Highway marker
|Primary roads||Facilitate movement of passengers and freight between major regions in the Island (north, south, east, west)||1–99[a]|
|Urban primary roads||Complement the primary network inside a metro area (San Juan, Ponce, Mayagüez, Arecibo, Aguadilla, Humacao, Caguas and Guayama)||Any|
|Secondary (or inter-municipal) roads||Provide access to municipalities from primary network roads||100–299[a]|
|Tertiary (or intra-municipal) roads||Provide access to a municipality's main urban area from peripheral communities||300–9999|
- Just like some highways numbered 1–99 may have secondary or tertiary network type markers on specific segments of their roadways, some highways numbered 100–299 may have tertiary network markers—black numbers on white circles set against a black square—in specific segments of those highways as well to indicate that such portions of the highway are part of the tertiary network.
Less common markers
At least two other markers can be observed in Puerto Rico roads today (2019). The first is the older style road marker which, above the route number, also had the outline of the main island of Puerto Rico with the words Puerto Rico on the outline as shown here. Until 1999, all non-tolled numbered highways in Puerto Rico had the same route marker, a square with a white-on-black half-circle with the route number in the bottom two thirds and a map of Puerto Rico with the words Puerto Rico written inside in the top third. A second road marker, used on the road through El Yunque National Forest, is the brown-colored upside-down trapezoidal marker with the road number on the top two-thirds of the sign and the words Bosque Nacional (national forest) on the bottom one-third, as shown.
All Puerto Rico Highway System roads, regardless of the classification used, are maintained by the centralized, Commonwealth-level, Departmento de Transportación y Obras Públicas (DTOP). Municipal governments are not responsible for maintenance of the Puerto Rico Highway System roads within their territory; whether or not the municipal government is an autonomous government, DTOP is the responsible agency. The DTOP maintains a network of regional offices throughout the island which carry out DTOP work within their multi-municipality region. Municipal governments are only responsible for maintenance of city and town streets within their jurisdictions. On occasion, the central government has entered into memoranda of agreement with municipal governments for the collaborative maintenance of some Puerto Rico Highway System roadways within their municipalities.
In Puerto Rico, the term municipal road may be encountered occasionally. This is not a “fourth” network of State roads. Roadways that have both their terminus within the same municipality are called tertiary roads and are, by convention, numbered PR-300 through PR-9999. Tertiary roads are also sometimes called Carreteras de la red local (English: Local network roads).
However, the term municipal road or municipal highway (Spanish: Carretera municipal) refers to any public roadway that is not marked with a Puerto Rico road marker. Roadways marked with a Puerto Rico road marker are those public roadways that include PR followed by a number in its markers. Such roads are considered State roads and part of the Puerto Rico Highway System. Public roadways that do not include such markings are termed municipal roadways. Unlike State roads, which are signed with numbers, municipal roads are signed with names, such as Calle Hostos, Calle De Diego, Calle San Jorge, Calle León M. Acuña.
Tertiary roads are not municipal roads even though at times the term municipal road has been used (as a shortcut to intra-municipal road)—even by the Government of Puerto Rico—to refer to a tertiary State road. The confusion comes from the context in which the phrase municipal road occurs. When the term municipal road occurs in the context of roads owned and maintained by the State government, municipal roads means tertiary State network roads. In this context, a municipal road and a State tertiary road both refer to the same network of State roads. However, if the term occurs in the context of roadways owned and maintained by a municipal government, it refers to the network of local streets and roadways that make up the urban landscape of a municipality.
Another context sometimes encountered is the context of how a road is used, that is, the purpose of a road. The purpose of a road is indicative of whether a road is a municipal road or not. In its strictest meaning, the term municipal roads refers to roads within a municipality's urban center that provide access from one urban neighborhood to another urban neighborhood within the same urban area (city, town, poblado, etc.), while in the larger context of the State highway system, municipal roads refers to roads that “provide access to the main urban area of a municipality from peripheral communities” (that is, tertiary roads). Municipal roads are maintained by the municipal government where those roads occur, while tertiary roads are maintained by the State government. As stated under the section Road maintenance, at times the State government has entered into Memorandums of Agreement with municipal governments for the upkeep of a State tertiary roadway (note this is a State-owned road that runs entirely within a single municipality), but this does not make it a municipal road—the road continues to maintain its State signage and ownership.
Highways with control access fall into three types: An expressway is an arterial highway with full or partial control of access. Expressways with full control of access are termed freeways. If the freeway charges a toll for its use, it is called an autopista. Most tollbooths accept the AutoExpreso, an electronic toll collection system, to avoid traffic congestion. Toll roads between San Juan and Arecibo, and between San Juan and Ponce were envisioned by J. Raymond Watson, a Puerto Rican engineer, in 1970.
All Puerto Rico expressways are signed either as primary or as primary urban routes.
|Route||Name||Terminus||Maximum speed limit||Comments|
|PR-2||Expreso Kennedy||Starts from San Patricio Plaza (Guaynabo) to Santurce (San Juan, aka Parada 18).||50 mph (80 km/h)||Guaynabo to San Juan section only.|
|PR-2||Roberto Sánchez Vilella||Starts from Mayagüez Mall (Mayagüez) to PR-1 in Ponce||55 mph (90 km/h)||Mostly converted to expressway from Mayagüez Mall to Ponce.|
|PR-5||Expreso Río Hondo||Bayamón, PR-22 to Naranjito, PR-147 and PR-149 with discontinuity between PR-199 in Bayamón and PR-167 in Toa Alta.||50 mph (80 km/h)||Tolled. This road has three expressway segments as of April 2012—these are between PR-29 and PR-22 and between PR-2 and PR-199 (both in Bayamón), an unbuilt portion in southern Bayamón and a portion between PR-167 (Toa Alta) and the town of Naranjito.|
|PR-9||Baldorioty de Castro||PR-10 Barrio Portugués to PR-2 Barrio El Tuque||55 miles per hour (89 km/h) to 65 miles per hour (105 km/h)||From PR-123 to PR-2 still under construction|
|PR-12||Santiago de los Caballeros||PR-14 Barrio Machuelo Abajo to PR-123 Barrio Playa||55 miles per hour (89 km/h)|
|PR-18||Expreso Las Américas||PR-22 San Juan and PR-52 San Juan||55 to 65 mph (90 to 110 km/h)|
|PR-20||Expreso Rafael Martínez Nadal||PR-2 in the San Patricio area in Guaynabo to PR-1 in La Muda sector in Caguas||55 mph (90 km/h)||Tolled|
|PR-22||Autopista José de Diego||Hatillo, PR-2 to San Juan, PR-26||65 mph (105 km/h)||Extension to Aguadilla in planning. Tolled|
|PR-26||Expreso Román Baldorioty de Castro||San Antonio Bridge (Bridge to Old San Juan Island) to PR-3 in Carolina.||65 mph (105 km/h)|
|PR-30||Expreso Cruz Ortiz Stella||Caguas, PR-1 to Humacao, PR-53||55 mph (90 km/h)|
|PR-52||Autopista Luis A. Ferré||Ponce, PR-2 to San Juan, PR-1 and PR-18||65 mph (105 km/h)||Tolled. This highway is the longest tolled freeway in Puerto Rico.|
|PR-53||Autopista Dr. José Celso Barbosa||Fajardo to Yabucoa, and then Guayama to Salinas.||65 mph (105 km/h)||Maunabo tunnels constructed in October 2008. The segments between Yabucoa and Maunabo still incomplete.|
|PR-60||Avenida Dionisio Casillas||Humacao, PR-30 to Humacao, PR-3||55 mph (90 km/h)|
|PR-66||Autopista Roberto Sánchez Vilella||PR-3 in Carolina and Río Grande||65 mph (105 km/h)||Second half opened in October 2012 to Río Grande. Tolled.|
|PR-165||Expreso El Caño||Guaynabo, PR-2 and PR-23 to Cataño||50 mph (80 km/h)|
List of highways
Below is a list of some highways in Puerto Rico along with the municipalities where they begin and end.
Primary roads are numbered in the 1 to 99 range and are distributed randomly throughout the island.
|Number||Length (mi)||Length (km)||Southern or western terminus||Northern or eastern terminus||Formed||Removed||Notes|
|PR-1||—||—||PR-123 in Ponce||Calle Tanca in San Juan||—||—||Carretera Central|
|PR-2||—||—||PR-1 / PR-133 in Ponce||PR-26 in San Juan||—||—|
|PR-2R||—||—||PR-440 in Aguadilla||PR-2 in Aguadilla||—||—||Aguadilla business spur|
|PR-2R||—||—||PR-2 / PR-114 in Mayagüez||PR-2 in Mayagüez||—||—||Mayagüez business loop|
|PR-2R||1.01||1.63||PR-2 in Ponce||PR-123 in Ponce||—||—||Ponce business spur|
|PR-3||—||—||PR-1 in Salinas||PR-1 in San Juan||—||—|
|PR-3R||—||—||PR-3 in Humacao||PR-3 in Humacao||—||—||Humacao business loop|
|PR-4||—||—||PR-17 in San Juan||PR-26 in Carolina||—||—||Became part of PR-8|
|PR-4||—||—||PR-114 in Hormigueros||PR-102 in San Germán||—||—||Renumbered to PR-103 and PR-101|
|PR-5||—||—||PR-164 in Naranjito||Calle Canal in Cataño||—||—||Tolled in Bayamón. PR-5 exists into two segments due to an unconstructed portion in Bayamón.|
|PR-5||—||—||PR-2 in Aguadilla||PR-2 in Aguadilla||—||—||Renumbered to PR-107 and PR-110|
|PR-6||—||—||PR-5 in Bayamón||PR-2 in Bayamón||—||—|
|PR-8||—||—||PR-17 in San Juan||Near PR-3 in Carolina||—||—||Formerly PR-4|
|PR-9||4.52||7.27||PR-2 / PR-52 in Ponce||PR-10 in Ponce||—||—||PR-9 currently exists in two portions, as the portion between PR-123 and PR-500 is actually under construction.|
|PR-10||42.42||68.27||PR-5506 in Ponce||PR-2 in Arecibo||—||—||PR-10 exists into two segments due to a still-under-construction portion between Adjuntas and Utuado.|
|PR-12||3.28||5.28||La Guancha in Ponce||PR-14 in Ponce||—||—|
|PR-14||—||—||PR-123 in Ponce||PR-1 in Cayey||—||—||Carretera Central|
|PR-14R||—||—||PR-123 in Ponce||PR-14 in Ponce||—||—|
|PR-15||—||—||PR-3 in Guayama||PR-14 in Cayey||—||—|
|PR-16||—||—||PR-1 in San Juan||PR-1 / PR-26 in San Juan||—||—|
|PR-17||—||—||PR-19 in San Juan||PR-26 in Carolina||—||—||Tolled in Teodoro Moscoso Bridge.|
|PR-18||3.78||6.08||PR-1 / PR-52 in San Juan||PR-22 in San Juan||—||—|
|PR-19||—||—||PR-20 in San Juan||PR-2 in Guaynabo||—||—||PR-19 is the main avenue in San Patricio, Guaynabo.|
|PR-20||6.03||9.70||PR-1 in Guaynabo||PR-2 in Guaynabo||—||—||Tolled|
|PR-21||—||—||PR-20 in San Juan||PR-1 / PR-176 in San Juan||—||—|
|PR-22||52.01||83.70||PR-2 in Hatillo||PR-26 in San Juan||1969||current||Tolled|
|PR-23||—||—||PR-2 / PR-165 in Guaynabo||PR-27 in San Juan||—||—|
|PR-24||—||—||PR-165 in Guaynabo||PR-888 in Cataño||—||—|
|PR-25||—||—||PR-3 in San Juan||Calle Recinto Sur in San Juan||—||—|
|PR-25R||—||—||PR-1 in San Juan||PR-25 in San Juan||—||—|
|PR-26||9.63||15.50||PR-1 in San Juan||PR-3 / PR-66 in Carolina||—||—|
|PR-27||—||—||PR-3 in San Juan||PR-36 in San Juan||—||—|
|PR-28||—||—||PR-5 in Bayamón||PR-2 in Guaynabo||—||—|
|PR-29||—||—||PR-2 in Bayamón||PR-5 in Bayamón||—||—|
|PR-30||19.08||30.71||PR-1 in Caguas||PR-53 in Humacao||—||—|
|PR-31||—||—||PR-30 / PR-9913 in Juncos||PR-3 in Naguabo||—||—|
|PR-32||—||—||PR-172 in Caguas||PR-1 in Caguas||—||—|
|PR-33||—||—||Bulevar Cristóbal Colón in Caguas||PR-1 / PR-189 in Caguas||—||—|
|PR-34||—||—||PR-32 in Caguas||PR-196 in Caguas||—||—|
|PR-35||—||—||PR-1 in San Juan||PR-16 in San Juan||—||—|
|PR-36||—||—||PR-35 in San Juan||PR-27 in San Juan||—||—|
|PR-37||—||—||PR-25 in San Juan||PR-187 in Carolina||—||—|
|PR-38||—||—||Calle Recinto Sur in San Juan||PR-25 in San Juan||—||—|
|PR-39||—||—||PR-1 in San Juan||PR-25 in San Juan||—||—|
|PR-40||—||—||PR-25 in San Juan||PR-27 in San Juan||—||—|
|PR-41||—||—||PR-17 in San Juan||PR-25 in San Juan||—||—|
|PR-42||—||—||Calle Lafayette in San Juan||PR-39 in San Juan||—||—|
|PR-47||—||—||Calle Ferrocarril in San Juan||PR-3 in San Juan||—||—|
|PR-52||67.30||108.31||PR-2 / PR-9 in Ponce||PR-1 / PR-18 in San Juan||1968||current||Tolled|
|PR-53||—||—||PR-52 in Salinas||PR-3 / PR-194 in Fajardo||1988||current||Tolled. PR-53 exists into four portions due to an unconstructed segments between Guayama and Yabucoa.|
|PR-54||—||—||PR-53 / PR-7711 in Guayama||PR-3 / PR-748 in Guayama||—||—|
|PR-60||2.21||3.56||PR-30 in Humacao||PR-3 in Humacao||—||—|
|PR-63||—||—||PR-102 in Mayagüez||PR-2 in Mayagüez||—||—|
|PR-64||—||—||PR-102 / PR-3342 in Mayagüez||PR-2 / PR-342 in Mayagüez||—||—|
|PR-65||—||—||PR-2R in Mayagüez||PR-106 in Mayagüez||—||—|
|PR-66||—||—||PR-3 / PR-26 in Carolina||PR-3 / PR-187 in Río Grande||—||—||Tolled|
Secondary roads are numbered in the 100 to 299 range. Unlike primary highways, which are numbered randomly throughout the island, secondary highways generally follow a grid pattern. They begin from the southwest portion of the island with PR-100 and increase in number as you progress in a northeasterly fashion. PR-100 is located in the southwestern town of Cabo Rojo, whilst PR-198 is in Juncos, Las Piedras and Humacao in the eastern part of Puerto Rico. The highest secondary highway number assigned so far (February 2014) is 252 (PR-252), located in the northeastern municipality-island of Culebra. A few roads “violate” this grid order; for example, PR-199 lies in Guaynabo and San Juan.
Tertiary highways also follow a general grid. Towns which do not border the Atlantic Ocean or the Caribbean Sea, especially in the mountainous area, may overlap this grid, for example Ciales may have both highways in the 600-699 grid and the 500-599 grid, depending where they begin further north or further south. Generally along the areas where the highways are, the lower the number, the more south it is. Culebra is the only town in Puerto Rico that does not fall in any of the regions, for only PR-250 and PR-251 are the main routes. The entire immediate metropolitan area of San Juan with the exception of Caguas falls in the 800 region, while the entire east coast (north and south) east of San Juan, Caguas and Patillas fall in the 900 region. This is because the eastern portion of Puerto Rico has a southeastern coast which goes to the west from Humacao, which roughly defines where the Vieques Passage and the Caribbean Sea meet along the coast. Yabucoa is in the exact south-southeast area and lies in the 900 region, while Maunabo overlaps the 700's and 900's regions. Vieques, an offshore island-municipality, has some highways in the 900 order.
Some roads are numbered using four digits. For example, PR-5506. These are branches, or spurs, of tertiary roads by the same last three digit number. Thus, PR-5506 is a branch of PR-506. They are often dead end branches, and are common in the mountain regions of the main island. Sometimes they are loops branching off the main road and eventually connecting back to the same main tertiary road. The “fourth” digit is generally a repeat of the first digit of the main tertiary road in question. Thus, a branch of PR-301 would be signed PR-3301, with the added 3 prefixing the number of the main tertiary road associated with the spur, 301, because 3 is the first digit of the main road. When the road has more than one distinct spur, an additional unrelated digit is used (example, PR-4301).
|Number||Length (mi)||Length (km)||Southern or western terminus||Northern or eastern terminus||Formed||Removed||Notes|
|PR-301||—||—||Los Morrillos Light in Cabo Rojo||PR-101 in Cabo Rojo||—||—|
|PR-339||—||—||PR-105 in Mayagüez||PR-119 in Mayagüez||—||—||Ruta Panorámica|
|PR-344||—||—||PR-345 in Hormigueros||PR-348 in Mayagüez||—||—|
|PR-365||—||—||PR-368 in Sabana Grande||PR-105 in Maricao||—||—||Part of the Ruta Panorámica|
|PR-366||—||—||PR-120 in Sabana Grande||PR-365 in Maricao||—||—||Ruta Panorámica|
|PR-385||—||—||PR-127 in Peñuelas||PR-132 in Peñuelas||—||—|
|PR-413||—||—||PR-115 in Rincón||PR-115 in Rincón||—||—|
|PR-500||—||—||Barrio Canas in Ponce||PR-132 in Ponce||—||—|
|PR-501||—||—||PR-123 in Ponce||Barrio Marueño in Ponce||—||—|
|PR-502||—||—||PR-132 in Ponce||PR-501 in Ponce||—||—|
|PR-503||—||—||PR-14R in Ponce||PR-143 in Utuado||—||—|
|PR-504||—||—||PR-503 in Ponce||PR-505 in Ponce||—||—|
|PR-505||—||—||PR-139 in Ponce||PR-503 in Ponce||—||—|
|PR-506||—||—||Barrio Coto Laurel in Ponce||PR-14 in Ponce||—||—|
|PR-510||—||—||PR-1 in Ponce||PR-14 in Juana Díaz||—||—|
|PR-511||—||—||PR-14 in Ponce||Anón in Ponce||—||—|
|PR-515||—||—||PR-123 in Ponce||PR-10 in Ponce||—||—|
|PR-516||—||—||Sector Santas Pascuas in Ponce||PR-123 in Ponce||—||—|
|PR-518||—||—||PR-131 in Adjuntas||PR-123 in Adjuntas||—||—||Ruta Panorámica|
|PR-525||—||—||PR-135 in Adjuntas||PR-131 in Adjuntas||—||—||Ruta Panorámica|
|PR-549||—||—||Barrio Canas in Ponce||PR-132 in Ponce||—||—|
|PR-568||—||—||PR-5155 in Orocovis||PR-159 in Corozal||—||—|
|PR-577||—||—||PR-143 in Ponce||Cerro Maravilla in Ponce||—||—|
|PR-578||—||—||PR-1 in Ponce||PR-1 in Ponce||—||—|
|PR-585||—||—||PR-123 in Ponce||PR-2R in Ponce||—||—|
|PR-588||—||—||PR-504 in Ponce||Camino La Zarza in Ponce||—||—|
|PR-591||—||—||PR-2 in Ponce||PR-2 in Ponce||—||—|
|PR-693||—||—||PR-690 in Vega Alta||PR-2 / PR-165 in Dorado||—||—|
|PR-715||—||—||Barrio Cercadillo in Cayey||PR-1 in Cayey||—||—||Part of the Ruta Panorámica|
|PR-722||—||—||PR-162 / PR-7718 in Aibonito||PR-14 in Aibonito||—||—||Part of the Ruta Panorámica|
|PR-723||—||—||PR-143 in Coamo||PR-14 in Aibonito||—||—||Ruta Panorámica|
|PR-735||—||—||PR-1 in Cayey||PR-1 in Cayey||—||—||Carretera Central|
|PR-741||—||—||PR-15 in Cayey||Barrio Culebras Alto in Cayey||—||—||Ruta Panorámica|
|PR-742||—||—||PR-179 in Guayama||PR-738 in Cayey||—||—||Part of the Ruta Panorámica|
|PR-760||—||—||Punta Tuna Light in Maunabo||PR-3 in Maunabo||—||—||Part of the Ruta Panorámica|
|PR-798||—||—||PR-1 in Caguas||PR-1 in San Juan||—||—||Carretera Central|
|PR-803||—||—||PR-152 / PR-802 in Naranjito||PR-164 in Corozal||—||—|
|PR-866||—||—||PR-2 in Toa Baja||PR-167 in Toa Baja||—||—|
|PR-873||—||—||PR-1 in San Juan||PR-1 in San Juan||—||—||Carretera Central|
|PR-891||—||—||PR-159 in Corozal||PR-159 in Corozal||—||—||Formerly PR-159|
|PR-901||—||—||PR-760 in Maunabo||PR-182 in Yabucoa||—||—||Ruta Panorámica|
|PR-908||—||—||PR-3 in Yabucoa||PR-3 in Humacao||—||—|
|PR-939||—||—||PR-760 in Maunabo||Barrio Quebrada Arenas in Maunabo||—||—||Part of the Ruta Panorámica|
|PR-998||5.47||8.80||Port of Culebra||Zoni Beach in Culebra||—||—||Renumbered to PR-250|
|PR-999||1.74||2.80||PR-250 in Culebra||Flamenco Beach in Culebra||—||—||Renumbered to PR-251|
|PR-1107||—||—||PR-2 / PR-111 in Aguadilla||PR-107 in Aguadilla||—||—||Formerly PR-111|
|PR-1111||—||—||PR-111 in Lares||PR-111 in Lares||—||—||Formerly PR-111|
|PR-1116||—||—||PR-116 in Guánica||PR-121 in Yauco||—||—||Formerly PR-116R|
|PR-1150||—||—||PR-150 in Villalba||PR-149R / PR-150 in Villalba||—||—|
|PR-1181||—||—||PR-3 in Patillas||PR-3 in Patillas||—||—|
|PR-3101||—||—||PR-101 in Lajas||PR-101 in Lajas||—||—|
|PR-3108||—||—||PR-2 in Mayagüez||PR-108 in Mayagüez||—||—|
|PR-3116||—||—||PR-116 in Guánica||PR-116 in Guánica||—||—||Formerly PR-116|
|PR-3131||—||—||PR-132 in Guayanilla||Sector Malpaso in Peñuelas||—||—|
|PR-3132||—||—||PR-132 in Peñuelas||PR-132 in Peñuelas||—||—|
|PR-3301||—||—||Calle Mariana Bracetti in Cabo Rojo||PR-301 in Cabo Rojo||—||—|
|PR-3342||—||—||PR-102 in Mayagüez||PR-64 / PR-102 in Mayagüez||—||—|
|PR-4010||—||—||PR-110 in Aguadilla||Ramey Air Force Base in Aguadilla||—||—||Formerly PR-110R|
|PR-4110||—||—||PR-443 in Aguadilla||PR-110 in Moca||—||—|
|PR-4111||—||—||PR-111 in San Sebastián||PR-111 in San Sebastián||—||—||Formerly PR-111|
|PR-4116||—||—||PR-116 in Guánica||PR-116 in Guánica||—||—||Formerly PR-116R|
|PR-4119||—||—||PR-485 in Quebradillas||PR-119 in Camuy||—||—||Formerly PR-485|
|PR-4128||—||—||PR-111 in Lares||PR-128 in Lares||—||—|
|PR-4415||—||—||PR-417 in Aguada||PR-115 in Aguada||—||—||Formerly PR-115R|
|PR-5139||���||—||PR-14 in Ponce||PR-139 / PR-139R in Ponce||—||—|
|PR-5141||—||—||PR-144 in Jayuya||PR-141 in Jayuya||—||—|
|PR-5144||—||—||PR-141 in Jayuya||PR-144 in Jayuya||—||—|
|PR-5155||—||—||PR-155 in Orocovis||PR-155 in Orocovis||—||—||Formerly PR-155|
|PR-5156||—||—||PR-155 in Orocovis||PR-156 in Orocovis||—||—|
|PR-5506||—||—||PR-1 in Ponce||PR-10 in Ponce||—||—|
|PR-5561||—||—||PR-149 in Villalba||PR-150 in Villalba||—||—|
|PR-5568||—||—||PR-568 in Corozal||PR-159 / PR-647 in Corozal||—||—|
|PR-6111||—||—||PR-111 in Utuado||PR-111 in Utuado||—||—||Formerly PR-111R|
|PR-6140||—||—||PR-2 in Barceloneta||PR-140 in Barceloneta||—||—||Formerly PR-140|
|PR-6165||—||—||PR-693 in Dorado||PR-165 in Dorado||—||—|
|PR-6685||—||—||PR-146 in Ciales||PR-2 in Manatí||—||—||Formerly PR-149|
|PR-6693||—||—||PR-696 in Dorado||PR-693 in Dorado||—||—|
|PR-7014||—||—||PR-14 in Cayey||Calle Enramada in Cayey||—||—|
|PR-7156||—||—||PR-156 in Aguas Buenas||PR-156 in Caguas||—||—||Formerly PR-156|
|PR-7167||—||—||PR-156 / PR-167 in Comerío||La Plata River in Comerío||—||—||Formerly PR-156|
|PR-7173||—||—||Barrio Sumidero in Aguas Buenas||PR-173 in Aguas Buenas||—||—|
|PR-7718||—||—||PR-14 in Aibonito||PR-162 / PR-722 in Aibonito||—||—||Ruta Panorámica|
|PR-7722||—||—||PR-722 in Aibonito||PR-1 in Cayey||—||—||Ruta Panorámica|
|PR-7737||—||—||PR-715 in Cayey||PR-15 in Cayey||—||—||Ruta Panorámica|
|PR-7740||—||—||PR-184 in Patillas||PR-181 in San Lorenzo||—||—||Ruta Panorámica|
|PR-7741||—||—||PR-741 in Cayey||PR-742 in Guayama||—||—||Ruta Panorámica|
|PR-8176||—||—||PR-176 in San Juan||PR-176 in San Juan||—||—|
|PR-8177||—||—||PR-177 in Guaynabo||PR-177 in Guaynabo||—||—|
|PR-8834||—||—||PR-1 / PR-173 in Guaynabo||PR-1 / PR-169 in Guaynabo||—||—||Carretera Central|
|PR-8838||—||—||PR-177 in San Juan||PR-1 in San Juan||—||—||Carretera Central|
|PR-9030||—||—||PR-189 in Gurabo||PR-933 in Gurabo||—||—|
|PR-9185||—||—||PR-185 in Juncos||PR-31 in Juncos||—||—|
|PR-9189||—||—||PR-189 in Gurabo||Barrio Rincón in Gurabo||—||—|
There are no Interstate-signed highways in Puerto Rico, but there are roadways that have received up to 90% of their funding from the Interstate Highway System. Still, at least as of 2007, none of such highways funded by the Interstate Highway program were planned or built to the standards of the Interstate Highway System. As of March 2001, Puerto Rico had 410 km (250 mi) of such roadways. As of 2001, there were three highways in Puerto Rico funded under the Interstate Highway Program. For obvious reasons, these routes—as with Interstate Highways in Alaska and Interstate Highways in Hawaii—do not connect to the Interstate Highway System in the contiguous United States.
Unlike Interstate routes in Hawaii, Puerto Rico Interstate routes are unsigned. For administrative and funding purposes, the three routes have been designated as PRI-1, PRI-2 and PRI-3 and run along various combinations of Puerto Rico routes. They do not follow the even-and-odd-number rule used in mainland United States that indicates direction of travel. Per Section 103(c)(1)(B) (ii), Title 23, United States Code (23 U.S.C.) Puerto Rico is exempt from the design standards of Section 109(b).
|71.08||114.39||PR-2 in Ponce||PR-2 in San Juan (PR-22/PR-18 interchange)|
|138.13||222.30||PR-1 in Ponce||PR-3 in San Juan (PR-1/PR-26 interchange)|
|65.27||105.04||PR-3 in Humacao||PR-2 in San Juan (PR-1/PR-26/PR-66 interchange)|
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