*180 La Coma (101) - Puerto Juárez (some signs east of Mérida say 295)
**Matamoros-La Coma: overlap with 101 (unsigned, but listed in DV and LRF)
**Estación Manuel-Tampico: overlap with 80 (signed poorly, if at all)
**Tampico: gap (signed westbound to head north from the bridge, but I can't find anything beyond there)
**Mata Redonda: branch (unsigned)
**Villa Cuauhtémoc: branch (unsigned?)
**Ozuluama de Mascareñas: gap (obvious route)
**Avenida Nuevo León: branch (where is this?)
**Cerro Azul: branch (signed)
**Alazán: branch (signed? is this the turn signed for Potrero del Llano?)
**Tuxpan: bypass (signed, though locally maintained; eastbound traffic takes the direct turn onto Calle Pavon, while westbound traffic curves right off the bridge and left on Calle 15 de Septiembre, or right to use the business route)
**Tuxpan-La Barra: branch (unsigned?)
**Tuxpan-Poza Rica: overlap with 130 (poorly signed, but it is signed at the south end instead of 130)
**Poza Rica: gap (obvious route)
**Papantla de Olarte: loop (signed; LRF also lists a branch somewhere?)
**Gutiérrez Zamora: gap (obvious route)
**Gutiérrez Zamora-Tecolutla: branch (signed; westbound traffic through Gutiérrez Zamora is directed via Calle A. Cerisola to left on Avenida 2 de Abril and left on Oriental; the same thing is partly signed eastbound too, perhaps as a truck bypass)
**La Guadalupe-Riachuelos: branch (signed)
**Palma Sola: gap (obvious route)
**Central Nucleoelectrica Laguna Verde: branch (unsigned; only in GIS)
**José Cardel: gap (obvious route through town; also signed on bypass)
**José Cardel-Veracruz: overlap with 180D (signed as both 180 and 180D; toll maintenance apparently begins at the merge with 140 and ends
here)
***La Antigua: branch (unsigned)
**Santa Fe-San Julian: branch? (signed, if this is the continuation of the bypass to San Julian)
**Zona Portuaria: branch (unsigned? where is this? it's only 3.77 km)
**API Puerto Veracruz: branch (unsigned? where is this?)
**Veracruz: gap (signed westbound from downtown; there's no logical route through downtown) and bypass (signed)
**Alvarado: gap (obvious route)
**Lerdo de Tejada: gap (obvious route)
**Angel R. Cabada: gap (obvious route)
**San Andrés Tuxtla: gap (obvious route via bypass; route through downtown also signed at both ends, but apparently not in downtown)
**Catemaco: branch (signed)
**Juan Diaz Covarrubias: gap (obvious route)
**Hueyapan de Ocampo: branch (signed, at least in 2013)
**Acayucan: loop (signed as blank at the north end and not at the east end; I don't think there are any 180 shields downtown)
**Acayucan-Coatzacoalcos: overlap with 185 (partly signed)
**Coatzacoalcos: gap (obvious route)
**Villahermosa: gap (signed via the northwest part of the beltway, though eastbound signs are missing; a route is also signed through town using the east-west freeway and Avenida Universidad, but without eastbound signage at the turn (signs
formerly pointed straight to the northeast beltway for Frontera); it may be that the intended route is to stay on to the next exit and turn left; there's also some 180 signage on the northeast beltway and southeast beltway?)
**Ocuiltzapotlán: branch (unsigned)
**Macultepec: branch (unsigned)
**Frontera: branch (signed)
**Nuevo Progreso: gap (obvious route on bypass; also signed through town)
**San Antonio Cárdenas: gap (obvious route on bypass; also signed through town)
**Atasta: gap (obvious route)
**Ciudad del Carmen: gap (obvious route)
**Isla Aguada: branch (signed)
**Ex-Finca San Luis Carpizo: branch (unsigned; only in GIS)
**Champoton: gap (obvious route)
**Seybaplaya: loop (signed)
**Campeche: gap (unsigned; only signed on bypass?) and bypass (signed; 202 in GIS and DV)
**Campeche-Chiná: branch (signed as CAM blank; extends to Tixmucuy in DV)
**Tenabo-Entronque Chencolli (261): branch (signed as 180; 188 in LRF)
**Pomuch: loop (signed as CAM blank at east end only)
**Hecelchakán-Santa Cruz-Poc Boc: loop (signed)
**Dzitbalché-Calkiní-Tepakán: loop (signed as CAM blank at both ends, but 180 along the route (on older signs?))
***Dzitbalché-Santa Cruz Ex Hacienda: branch (signed as CAM blank)
**Calkini-Maxcanú: loop (signed)
***Becal: loop (signed as CAM blank)
***Halachó: loop (signed)
***Maxcanú: loop (unsigned)
**Kopomá: loop (signed)
**Chocholá: loop (signed)
**Umán: loop (signed; east end is at Mérida beltway, where signs direct traffic back south to 180; there's no such signage westbound) with gap (signed via one-way pair as shown in OSM)
**Mérida: gap (signed via southern beltway)
**Mérida-Tixkokob-Tekantó: branch (signed west to the Mérida beltway, where signs direct traffic south to 180; there's no such signage eastbound)
***Tixpeual-Tixkokob: gaps (obvious route) and bypass (signed, but with hanging east end)
***Cacalchen: gap (obvious route)
***Bokobá: gap (obvious route)
**San Pedro Noh Pat: loop (unsigned)
**Teya: loop (unsigned)
**Ticopó: loop (unsigned)
**San Bernandino: loop (signed at west end)
**Holactún: loop (signed at west end)
**Tahmek: loop (signed at west end)
**Hoctún-Xocchel: loop (signed)
***Hoctún: loop (signed at east end and in the middle)
***Xocchel: loop (unsigned)
**Kantunil: bypass (signed) and branch (signed as YUC 53 and MEXICO blank)
**Pisté: gap (obvious route)
**Zona Arqueológica de Chichen Itzá: branch (unsigned)
**Zona Hotelera de Chichen Itzá: branch (unsigned)
**X-Calakoop: gap (obvious route)
**Valladolid: gap (obvious route; also signed westbound on north beltway, but eastbound it's only signed for 295 and 180D)
**Tikuch: loop
**Chemax-Cobá: branch (signed as YUC blank at north end and Q. ROO blank at south end but 180 once you turn onto it; only in DV)
**Chemax: gap (obvious route) and loop (unsigned)
**X'Can: gap (obvious route) and loop (signed at west end)
**Leona Vicario: gap (obvious route)
**Cancun: gap (obvious route; probably makes sense to end it at 307)
**Emiliano Zapata: branch (where is this?)
**Punta Sam: branch (unsigned?)
*182 Teotitlán de Flores Magón (135) - Tuxtepec (175)
**Teotitlán de Flores Magón: gap (obvious route)
**San Jerónimo Tecóatl: gap (obvious route)
**San Lucas Ojitlán: branch (unsigned, at least in 2009; only in GIS)
**Tuxtepec: gap (obvious route)
*184 Entronque Teya (180) - Felipe Carrillo Puerto (307)
**Mama: loop with gap (unsigned)
**Peto: loop with gap (signed at south end but not through downtown)
**Peto-Tzucacab: branch (signed as 184 on older signs but YUC 84 or MEXICO 84 on newer signs; state maintained since 2006)
**Santa Rosa-Tzucacab-Muna: branch (signed as 184 on older signs but YUC 184 on newer signs; state maintained since 2006)
**Balneario: branch (where is this?)
**La Presumida-Candelaria: branch (signed as blank)
**José Maria Morelos: gap (obvious route)
**X-Yatil: branch (unsigned)
**Dzula: branch (unsigned)
**Felipe Carrillo Puerto: gap (obvious route)
*185 Coatzacoalcos (180) - Salina Cruz
**Coatzacoalcos: gap (obvious route to 180) and branch (where?)
**Refinería Las Matas: branch (unsigned)
**Entronque Minatitlán (180D) - Coatzacoalcos (172 in all sources, but I can only find 185 shields, and only at the airport; 180 on
km 0 but 185 on
km 5)
***Coatzacoalcos: gap (GIS shows federal maintenance ends at Dr. Jose Lemarroy Carrion)
**Minatitlán: gap (obvious route)
**Cosoleacaque/Oteapan: gap (obvious route)
**Oteapan-Soteapan: branch (signed, including on
km posts north of Oteapan)
***Oteapan/Chinameca: gap (obvious route)
***Los Cerritos: branch (unsigned; only in GIS)
**Acayucan: gap (obvious route via bypass; also signed into downtown from the south, with signs (many just cities) through downtown on Calle Guillermo Prieto, Calle de la Peña, Calle Hilario C. Salas, (northbound: Calle Guadalupe Victoria, Calle Melchor Ocampo, then it disappears; southbound: Calle Miguel Hidalgo, Calle Porvenir))
**Aguilera: gap (obvious route)
**Jesús Carranza: branch (unsigned)
**Suchilapan del Rio: branch (unsigned)
**north of Matías Romero Avendaño: loops (don't know if they're signed)
**Matías Romero Avendaño: branch (signed)
**Juchitán: gap (obvious route via in-town bypass; LRF shows a branch but where? the beltway is signed both ways from the northeast corner, but I can't find any other signs)
**Ixtaltepec/Ixtepec: branch (unsigned?)
***El Espinal: gap (no signs, but going straight seems to work in both directions)
***Ixtaltepec: gap (no signs)
**Base Aerea: branch (unsigned; only in GIS? or is this also in DV?)
**La E.T. I. 151: branch (where is this?)
**San Antonio Monterrey: branch (unsigned)
**Salina Cruz: gap (don't know how far signage goes; lots of branches in LRF, but I don't know where they are)
*186 Villahermosa (180) - Chetumal
**Aeropuerto de Villahermosa: branch (unsigned)
**Escárcega: gap (obvious route)
**Xpujil: gap (obvious route)
**Chetumal: gap (signed via both branches, the south branch from at least the circle east of the airport, and the north branch I don't know how far)
**Subteniente López: branch (signed)
***Subteniente López: bypass (signed)
*187 Raudales Malpaso - El Bellote
**Herradura-Entronque Autopista: branch (signed as 187, 145D, and CHIS blank)
**Cárdenas: gap (signage disappears at the beltway south of town, with only 180 signed along the beltway; both sides of the beltway are signed as 187 on 180, but the east side doesn't actually cross 180; from the north, 187 is signed straight inside the beltway, and then Huimanguillo (with TAB blank) is signed across 180, so the obvious straight routing appears to be the most logical)
**Comalcalco: gap (obvious route)
**Paraiso: gap (obvious route)
**Puerto Ceiba: gap (obvious route)
*188 Haltunchén (180) - Entronque Cayal (261) (180 in DV and GIS)
**Adolfo Ruiz Cortinez: branch (signed on
km posts)
**Tixmucuy: branch (signed)