{{Short description|Highway in Puerto Rico}} {{Use dmy dates|date=August 2019}} {{Infobox road | state = PR | type = PR | route = 181 | length_km = 68.65 | length_ref = <ref name="DTOP Transit Data"/> | established = 1953<ref name="Memoria Gurabo">{{cite web |title=Gurabo, Memoria Núm. 48 |year=1954 |url=https://rcm1.rcm.upr.edu/demografia/wp-content/uploads/sites/30/2020/04/Memoria_48_Gurabo-1954.pdf |website=Puerto Rico Planning Board |page= |language=es |access-date=August 11, 2020}}</ref> | direction_a = South | terminus_a = {{jct|state=PR|Sec|3}} in Patillas barrio-pueblo | junction = * {{jct|state=PR|Ter|759}} in Marín–Matuyas Alto * {{jct|state=PR|Ter|182}} in Guayabota * {{jct|state=PR|Ter|765}} in Jagual * {{jct|state=PR|Sec|183}} in Hato–Quemados * {{jct|state=PR|Ter|929}} in Quebrada * {{jct|state=PR|PR|30}} in Jaguar–Mamey * {{jct|state=PR|Ter|189}} in Mamey * {{jct|state=PR|Ter|175|Urban|8860}} in St. Just–Cuevas * {{jct|state=PR|Urban|199|Ter|876}} in St. Just–Cuevas * {{jct|state=PR|Urban|3|Ter|47}} in Sabana Llana Sur–Oriente | direction_b = North | terminus_b = {{jct|state=PR|PR|17}} in Oriente | municipalities = Patillas, Maunabo, Yabucoa, San Lorenzo, Gurabo, Trujillo Alto, San Juan | previous_type = Ter | previous_route = 180 | next_type = Ter | next_route = 182 | map_custom = yes | map = }}
'''Puerto Rico Highway 181''' ('''PR-181'''), also known as '''''Expreso Trujillo Alto''''' (Trujillo Alto Expressway),<ref name="Guia">{{cite web|url=http://www.dtop.gov.pr/carretera/det_content.asp?cn_id=126|title= Guía de Carreteras Principales, Expresos y Autopistas |language=Spanish |website=DTOP GOV PR}}</ref> is a road in Puerto Rico connecting the municipality of San Juan on the northeastern coastal plain with Patillas on the southeastern coastal plain. Beginning in the Rio Piedras district of barrio Oriente in San Juan at Jesus de Piñero Avenue (PR-17), it runs through Trujillo Alto, Gurabo and San Lorenzo on the Caguas Valley, and western Yabucoa and eastern Patillas on the Sierra de Cayey, before ending in the Patillas Pueblo downtown area on the southeastern coastal plain of Puerto Rico. PR-181 is a four-lane highway from San Juan through the Trujillo Alto Pueblo downtown area, and completely rural on the way to Patillas with the exception of a small tract in Gurabo where it intersects PR-30. Along with PR-10, PR-149, PR-1 and PR-52, it is one of the longest roads crossing the main island from north to south.
==Route description==
===Rural road=== <gallery class=center> Puente de Trujillo Alto.jpg|Puente de Trujillo Alto Trujillo Alto marker on PR-181.JPG|Trujillo Alto marker on PR-181 Gurabo, Puerto Rico.jpg|PR-181 north in Gurabo </gallery>
In Trujillo Alto, near Gurabo, it turns into a rural road with very narrow lanes per direction and hard curves, making it dangerous and requiring low speed limits. In Gurabo, it becomes divided in about 1 kilometer as it intersects Puerto Rico Highway 30, and then quickly turns rural. In San Lorenzo its makes intersection with Puerto Rico Highway 183. For the rest of its length it is still rural. In Yabucoa, PR-182 begins to connect to the main town, while PR-181 continues and as it enters Patillas, it borders lake Carite, before arriving to downtown Patillas, where it meets PR-3.<ref name="DTOP Transit Data">{{cite web |title=Tránsito Promedio Diario (AADT) |url=http://act.dtop.pr.gov/index.php/download/traffic-data-report-2000-2009/?wpdmdl=528 |website=Transit Data (Datos de Transito) |publisher=DTOP PR |pages=94–95 |language=es |url-status=dead |archive-url=https://web.archive.org/web/20190401220153/act.dtop.pr.gov/index.php/download/traffic-data-report-2000-2009/?wpdmdl=528 |archive-date=April 1, 2019}}</ref>
==Major intersections== {{PRinttop|length_ref=<ref name="Google PR-181S">{{google maps|url=https://www.google.com/maps/dir/18.1907124,-65.9601835/18.0055807,-66.0161303/@18.0981008,-66.0583302,12z/data=!3m1!4b1!4m19!4m18!1m15!3m4!1m2!1d-65.9747801!2d18.183707!3s0x8c035a14d6151955:0x89fc4fb676841b10!3m4!1m2!1d-65.9951838!2d18.0653047!3s0x8c0353cdef3b57ed:0x59b42a43dd8b611f!3m4!1m2!1d-65.997536!2d18.0384639!3s0x8c0353ab6b51ddbb:0x4e57221ffdbb97a1!1m0!3e0|title=PR-181 south|access-date=March 27, 2020}}</ref><ref name="Google PR-181N">{{google maps|url=https://www.google.com/maps/dir/18.1907124,-65.9601835/18.4088035,-66.0307355/@18.2993464,-66.0630839,12z/data=!3m1!4b1!4m14!4m13!1m10!3m4!1m2!1d-65.9608941!2d18.1912045!3s0x8c035a2485e8994d:0x276e142fb273b773!3m4!1m2!1d-65.980385!2d18.2898385!3s0x8c035c48d7340965:0xde49b9900e1ab0d1!1m0!3e0|title=PR-181 north|access-date=March 27, 2020}}</ref>}} <gallery mode=packed heights=150px> Expreso PR-30, salida hacia la carretera PR-181, Gurabo, Puerto Rico (1).jpg|PR-30 east at exit 7 to PR-181 in Gurabo </gallery> {{Clear}}
{{PRint |municipality=Patillas |munspan=3 |location=Patillas barrio-pueblo |lspan=2 |km=0.0 |road={{jct|state=PR|Sec|3|name1=Calle Luis Muñoz Rivera|city1=Arroyo|city2=Maunabo}} |notes=Southern terminus of PR-181 }} {{PRint |km=0.3 |road={{jct|state=PR|Ter|799|city1=Cacao Alto}} |notes= }} {{PRint |location=Marín |km=3.6 |road={{jct|state=PR|Ter|7759|city1=Marín}} |notes= }} {{PRint |municipality1=Patillas |municipality2=Maunabo |location1=Marín |location2=Matuyas Alto |km=10.3 |road={{jct|state=PR|Ter|759|city1=Maunabo}} |notes= }} {{PRint |municipality=Yabucoa |location=Guayabota |km=15.1 |road={{jct|state=PR|Ter|182|name1=Ruta Panorámica|city1=Yabucoa}} |type=concur |notes=Southern terminus of the Ruta Panorámica concurrency }} {{PRint |municipality=San Lorenzo |munspan=14 |location=Espino |ctdab=San Lorenzo |lspan=3 |km=20.6 |road={{jct|state=PR|Ter|7740|name1=Ruta Panorámica|city1=Cayey}} |type=concur |notes=Northern terminus of the Ruta Panorámica concurrency; the Ruta Panorámica continues toward Patillas }} {{PRint |km=21.7 |road={{jct|state=PR|Ter|9920|location1=Quebrada Arenas}} |notes= }} {{PRint |km=22.0 |road={{jct|state=PR|Ter|745|location1=Espino}} |notes= }} {{PRint |location=Quebrada Honda |ctdab=San Lorenzo |lspan=3 |km=23.0 |road={{jct|state=PR|Ter|902|location1=Quebrada Arenas}} |notes= }} {{PRint |km=24.1 |road={{jct|state=PR|Ter|913|location1=Quebrada Honda}} |notes= }} {{PRint |km=24.9 |road={{jct|state=PR|Ter|9912|city1=Cayaguas}} |notes= }} {{PRint |location=Jagual |ctdab=San Lorenzo |km=28.1 |road={{jct|state=PR|Ter|765|location1=Jagual}} |notes= }} {{PRint |location1=Hato |location2=Quemados |lspan=3 |km=32.0 |road={{jct|state=PR|Ter|788|city1=Quemados}} |notes= }} {{PRint |km=32.7 |line=yes |km2=10.3 |km2_ref={{efn|name=PR-183|Kilometer markers represent the distance along PR-183 rather than PR-181.}} |road={{jct|state=PR|Sec|183|name1=Carretera Jesús Santa Aponte|dir1=west|city1=Caguas|city2=Gurabo}} |type=concur |notes=Western terminus of PR-183 concurrency }} {{PRint |km=10.6 |km_ref={{efn|name=PR-183}} |line=yes |km2=32.8 |road={{jct|state=PR|Sec|183|name1=Carretera Jesús Santa Aponte|dir1=east|city1=Las Piedras}} |type=concur |notes=Eastern terminus of PR-183 concurrency }} {{PRint |location=San Lorenzo barrio-pueblo |km=33.8 |road={{jct|state=PR|Ter|980|name1=Calle Varona Suárez|city1=Las Piedras}} |type=incomplete |notes=One-way street; eastbound access via Calle José de Diego }} {{PRint |location1=San Lorenzo barrio-pueblo |location2=Hato |km=34.7 |road={{jct|state=PR|Ter|9931|city1=Caguas}} |notes= }} {{PRint |location=Quebrada |ctdab=San Lorenzo |lspan=2 |km=37.9 |km2=38.0 |road={{jct|state=PR|Ter|931|city1=Navarro}} |notes= }} {{PRint |km=38.5 |road={{jct|state=PR|Ter|929|city1=Juncos}} |notes= }} {{PRint |municipality=Gurabo |munspan=7 |location=Jaguar |km=40.8 |road={{jct|state=PR|Ter|9933|city1=Juncos}} |notes= }} {{PRint |location1=Jaguar |location2=Mamey |ctdab2=Gurabo |km=42.8 |road={{jct|state=PR|PR|30|name1=Expreso Cruz Ortiz Stella|city1=Caguas|city2=San Juan|city3=Juncos|city4=Humacao}} |notes=PR-30 exits 7 and 8; diamond interchange }} {{PRint |location=Mamey |ctdab=Gurabo |km=43.5 |road={{jct|state=PR|Ter|189|city1=Gurabo|city2=Juncos}} |notes= }} {{PRint |location=Celada |lspan=2 |km=45.4 |road={{jct|state=PR|Ter|944|location1=Hato Nuevo}} |notes= }} {{PRint |km=45.5 |road={{jct|state=PR|Ter|943|city1=Gurabo}} |notes= }} {{PRint |location1=Quebrada Infierno |location2=Masa |lspan=2 |km=50.6 |road={{jct|state=PR|Ter|945|city1=Masa}} |notes= }} {{PRint |km=54.1 |road={{jct|state=PR|Ter|851|name1=Carretera Reverendo Erasmo Ocasio Adorno|city1=La Gloria}} |notes= }} {{PRint |municipality=Trujillo Alto |munspan=8 |location1=Quebrada Negrito |location2=Dos Bocas |ctdab2=Trujillo Alto |km=58.4 |road={{jct|state=PR|Ter|852|location1=Quebrada Grande}} |notes= }} {{PRint |location1=Dos Bocas |ctdab1=Trujillo Alto |location2=La Gloria |km=59.5 |road={{jct|state=PR|Ter|851|name1=Carretera Reverendo Erasmo Ocasio Adorno|city1=La Gloria}} |notes= }} {{PRint |location1=Trujillo Alto barrio-pueblo |location2=La Gloria |km=61.4 |road={{jct|state=PR|Ter|894|to2=y|Ter|175|city1=Caguas}} |notes= }} {{Jctbridge |location_special=Río Grande de Loíza |km=61.7 |km2=61.9 |bridge=Puente de Trujillo Alto<ref name="Puentes">{{cite web |url=https://app.box.com/s/rm8asi7uz7k179at3vs3 |title=Los Puentes Históricos de Puerto Rico |author=Luis F. Pumarada O’Neill |year=1991 |format=PDF |pages=109–110 |language=es |access-date=March 26, 2020}}</ref> }} {{PRint |location1=Cuevas |location2=St. Just |lspan=4 |km=61.9 |road={{jct|state=PR|Ter|175|Urban|8860|dir2=east|to3=y|Ter|876|name3=Carretera Federico Degetau|city1=Caguas|city2=Carolina}} |notes= }} {{PRint |km=63.4 |road={{jct|state=PR|Ter|850|to2=y|Ter|876|name2=Carretera Federico Degetau|city1=Cuevas}} |type=incomplete |notes=Southbound exit and entrance }} {{PRint |km=63.5 |km2=63.6 |road={{jct|state=PR|Urban|199|name1=Carretera Coronel Pedro L. Negrón Ramírez|dir1=west|Ter|876|name2=Carretera Federico Degetau|city1=Cupey|city2=Guaynabo}} |notes= }} {{PRint |km=63.8 |road={{jct|state=PR|Ter|848|name1=Avenida Juan José "Chejuán" García Ríos|city1=St. Just}} |notes= }} {{PRint |municipality1=Trujillo Alto |municipality2=San Juan |location1=St. Just |location2=Cuevas |location3=Sabana Llana Sur |km=65.3 |road={{jct|state=PR|Ter|846|Ter|876|name2=Carretera Federico Degetau|city1=Cuevas|city2=St. Just}} |notes= }} {{PRint |municipality=San Juan |munspan=3 |location=Sabana Llana Sur |km=65.6 |road={{jct|state=PR|Ter|877|name1=Avenida Trujillo Alto|city1=Sabana Llana Sur}} |notes= }} {{PRint |location1=Sabana Llana Sur |location2=Oriente |km=67.1 |km2=67.4 |road={{jct|state=PR|Urban|3|name1=Avenida 65 de Infantería|Ter|47|name2=Calle De Diego|city1=Río Piedras|city2=Caguas|city3=Carolina|extra=hospital}} |notes=Diamond interchange }} {{PRint |location=Oriente |km=68.65 |road={{jct|state=PR|PR|17|name1=Expreso Jesús T. Piñero|city1=San Juan|city2=Hato Rey|city3=Carolina|city4=Isla Verde|extra=airport}} |notes=Northern terminus of PR-181; PR-17 exits 7B and 8 }} {{jctbtm|keys=concur,incomplete}} {{Notelist}}
==See also== {{Portal|Puerto Rico|U.S. Roads}} * 1953 Puerto Rico highway renumbering {{Break}}
==References== {{Reflist}}
==External links== * {{Commons category-inline}}
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