Route nationale française 171

Route nationale 171
Anciens panneaux en tôle sur la RN171 à Bouvron.© Bryce1987
Localisation
Pays	France
Régions	Normandie, Pays-de-la-Loire
Exploitation
Gestionnaire	DIR Ouest
Caractéristiques de 1824 à 1973
Itinéraire	Granville - Carentan
Longueur	62 km
Caractéristiques de 1978 à 2006
Itinéraire	Laval - Châteaubriant - Saint-Nazaire - Le Croisic
Longueur	172 km
Caractéristiques actuelles
Itinéraire	Nozay N137 - Savenay N165 - Saint-Nazaire D213
Longueur	53 km

Présentation

• La route nationale 171, ou RN171, est une route nationale française qui relie actuellement Nozay (RN137) à Saint-Nazaire (RD213), avec un raccordement à Savenay sur la RN165 (future A82).
• La section en voie express entre Savenay et Saint-Nazaire fait partie du réseau structurant de l'agglomération Nantes - Saint-Nazaire et à ce titre elle a été conservée dans le réseau routier national en 2006.
• La section entre Nozay et Savenay se situe sur l'axe Rennes - Saint-Nazaire et elle a été conservée par l'Etat in extremis. Son aménagement en voie express n'est pas programmé à ce jour en dépit de l'intense trafic supporté par cet axe.

Historique

Généralités

• A sa création, en 1824, elle est décrite comme la route de Granville à Carentan. Elle succède alors à la Route impériale 191.
• Cet axe a été déclassé lors de la réforme de 1972 et renuméroté en D971. Les traversées des principales villes ont ultérieurement été renumérotées en annexes suite à la création d'aménagements attribués à la D971 pour assurer la continuité du numéro.

Voir l'article : Route départementale française D971 (50).

• En 1978, lors de la numérotation du réseau routier national consécutive à cette réforme, le numéro a été réattribué à un nouvel axe Laval - Saint-Nazaire. Cet itinéraire était en fait une juxtaposition d'anciennes routes nationales :
  • N178^Bis de Laval à Pouancé.
  • N775 de Pouancé à Châteaubriant.
  • N771 de Châteaubriant au Croisic.
• Elle devient donc la route de Laval, N. 157, au Croisic.
• La portion de route stratégique comprise entre Savenay et Saint-Nazaire a fait l'objet de lourds aménagements au fil du temps, commencés du temps de son appartenance à la N771. Entre Saint-Nazaire et La Baule, la voie express de contournement a d'abord été une route départementale, intégrée en 1979 dans le réseau routier national. A cette date, la pénétrante Nord de Saint-Nazaire a été renumérotée en N471, déclassée en 2006.
• La réforme de 2005 aura été fatale aux deux extrémités de cet itinéraire. Entre Laval et Nozay, la route a été déclassée en D771. De même, entre Saint-Nazaire et La Baule, la voie express a été intégrée à la D213 alors qu'entre La Baule et Le Croisic, la route est devenue la D245. Les traversées d'agglomérations ont été reversées dans le réseau routier communal.

Construction

• Traversée de Granville : 1837 (réparations).

Aménagements

Axe Granville - Carentan

• Déviation de Granville : 1987.
• Déviation de Bréhal : juin 1989.
• Déviation de Muneville-sur-Mer : en projet, sans horizon de réalisation.
• Déviation de Quettreville-sur-Sienne : en projet, sans horizon de réalisation.
• Déviations d'Orval et d'Hyenville : en projet, sans horizon de réalisation.
• Déviation de Coutances : 1997 au Nord-Ouest et 5 juillet 2008 (première déviation courte en 1958) au Sud-Ouest.
• Déviation de Carentan : 1984 au Sud-Ouest par recalibrage d'un chemin existant, sans doute créé suite au Débarquement de 1944, et 1996 au Nord-Ouest par recalibrage d'un chemin existant, sans doute créé suite au Débarquement de 1944, et création d'un barreau jusqu'à la RN13.

Axe Laval - Pouancé

• Elargissement à 4 voies de la section D57 - D112 : 2001, prolongé en 2003.
• Elargissement à 3 et 4 voies de la section D112 - La Machenottière : Avant-projet sommaire d’itinéraire (APSI) pour une remise à niveau de l'axe le 17 mars 1993, Déclaration d'utilité publique en décembre 2002 (prorogée en juillet 2012).
  • Section D112 - Hippodrome de Laval (2x2 voies) : mise en service provisoire en septembre 2009, définitive en décembre 2009.
  • Section Hippodrome de Laval - Le Pont-au-Chat (2+1 voies) : mise en service provisoire en septembre 2009, définitive en décembre 2009.
  • Section Le Pont-au-Chat - La Machenotière (2x1 voies) : mise en service en septembre 2009.
• Déviation de Cossé-le-Vivien : 1^ère DUP en septembre 2005, 2^nde DUP le 16 septembre 2015, mise en service le 15 septembre 2022.
• Déviation urbaine de Craon : 1976.

Axe Pouancé - Nozay

• Déviation de Pouancé : 2006.
• Déviation de Châteaubriant :
  • Section Nord-Est : mars 1990.
  • Section Sud-Est : septembre 1990. Le giratoire de la Fayère est mis en service en 2000.
  • Section Sud-Ouest : DUP le 26 juin 1997 (prorogée en 2002), mise en service le 5 novembre 2010. Le giratoire à l'extrémité de la déviation avait été mis en service par anticipation le 25 novembre 2006.
• Créneau de dépassement entre Châteaubriant et Louisfert : août 1998.
• Aménagements ponctuels entre Châteaubriant et La Croix-Laurent : mars 1999.
• Aménagements ponctuels entre La Croix-Laurent et Nozay : août 2001.
• Créneau de dépassement de Saint-Aubin-les-Châteaux : 30 septembre 2008.
• Déviation de Treffieux : DUP le 16 juillet 2008, mise en service le 9 juin 2017.
• Carrefour giratoire de Nozay : 7 janvier 2019.
• Jonction avec la RN137 à Nozay : 8 juillet 1977.

Axe Nozay - Savenay

• L'aménagement de cet itinéraire comprend l'élargissement de la chaussée à 7 mètres, la mise hors gel et l'aménagement des points d’échanges en giratoires. Approuvé par un APSI en date du 17 mars 1993 (prorogé le 11 juillet 2000), il est déclaré d'utilité publique le 18 octobre 2001 (prorogée le 25 septembre 2006).
• Les mises en service sont les suivantes :
  • Déviation de La Grigonnais : en projet.
  • Carrefour giratoire de Pirudel : 21 juin 2014.
  • Carrefour giratoire de La Bretonnière : février 2011.
  • Carrefour de La Miltais : décembre 2014.
  • Section La Miltais - Blain : 2013.
  • Déviation de Blain (boulevard urbain) :
    • Section Nord-Est : 1993.
    • Section Sud-Est par réutilisation de voies communales existantes. Sur cette section, le giratoire de l'Avenue de la Gare est aménagé en juin 2016.
    • Déviation longue en projet.
  • Carrefour giratoire du Gravier : 2011.
  • Section Le Gravier - L'Hôtel-de-France : juillet 2018.
  • Carrefour giratoire de L'Hôtel-de-France : 2001.
  • Section L'Hôtel-de-France - Bouvron : 10 décembre 2010.
  • Déviation de Bouvron :
    • Définition d'un nouveau tracé de la déviation de Bouvron après concertation avec sa municipalité : 11 décembre 2002. Le créneau de dépassement projeté sur la déviation est maintenu.
    • Approbation de l’avant-projet sommaire modificatif de la déviation de Bouvron : 28 octobre 2015.
    • DUP : 16 janvier 2007.
    • Approbation du projet de la déviation de Bouvron : 7 novembre 2013.
    • Loi sur l'Eau et travaux préparatoires : 2014.
    • Travaux : 2017.
    • Mise en service : 6 novembre 2019.
  • Section Le Haut Bezou - La Croix-Blanche : octobre 2009.
  • Section La Croix-Blanche - Savenay : juillet 2008. Sur cette section, le virage du Pont Bouvronnais avait été rectifié en 2006.

Axe Savenay - Saint-Nazaire

• Voir ci-dessous, à la rubrique "voie express".
• A noter qu'une mise à 2x3 voies entre Donges et Sant-Nazaire était évoquée en 1997, en prévision de la saturation de l'axe. Cet aménagement est depuis repoussé sans horizon de réalisation.
• Les nombreuses habitations situées en bordure de la voie rapide ont conduit la DIR Ouest a construire des murs anti-bruit au droit de l'échangeur de Certé (bretelles "Trembly", "Tréfféac" et "Certé") durant le 1^er semestre 2011.
• Une opération similaire s'est ensuite déroulée au droit des traversées de Montoir-de-Bretagne et Trignac. Déclarée d'utilité publique le 21 avril 2016, les travaux ont été menés en plusieurs tranches à partir de 2017.

Axe Saint-Nazaire - La Baule

Voir l'article : Route départementale française D213 (44).

Axe La Baule - Le Croisic

• Déviation du Pouliguen : 1961.
• Rectification près de Kervalet en lien avec la suppression du passage à niveau de la D774 : 1998.

Tracés historiques

Laval - Le Croisic

Chargement de la carte...

{"type":"HYBRID","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"mappingservice":"googlemaps3","width":"550px","height":"450px","centre":{"text":"","title":"","link":"","lat":47.635784,"lon":-1.598511,"icon":""},"title":"","label":"","icon":"","lines":[{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ETravers\u00e9e de Bouvron\n\u003C/p\u003E\u003C/div\u003E","title":"Travers\u00e9e de Bouvron\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.43158310635343,"lon":-1.8311663903172075},{"lat":47.42924418508789,"lon":-1.8347193804587505},{"lat":47.428871,"lon":-1.835318},{"lat":47.424458,"lon":-1.842034},{"lat":47.418172,"lon":-1.846519},{"lat":47.41746,"lon":-1.84654},{"lat":47.416444,"lon":-1.846454},{"lat":47.412785,"lon":-1.850896},{"lat":47.410258,"lon":-1.853964},{"lat":47.40996849651291,"lon":-1.8541960307624095},{"lat":47.40537750817617,"lon":-1.857421728205395},{"lat":47.40504348501433,"lon":-1.8575290165659908},{"lat":47.404470113199146,"lon":-1.857362863731737}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESavenay - Prinquiau\n\u003C/p\u003E\u003C/div\u003E","title":"Savenay - Prinquiau\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.37153,"lon":-1.917458},{"lat":47.371007,"lon":-1.917436},{"lat":47.370702,"lon":-1.917629},{"lat":47.369241,"lon":-1.919721},{"lat":47.368958,"lon":-1.92073},{"lat":47.368856,"lon":-1.921663},{"lat":47.36903,"lon":-1.924882},{"lat":47.369401,"lon":-1.927886},{"lat":47.369474,"lon":-1.929399},{"lat":47.36935,"lon":-1.930718},{"lat":47.369197,"lon":-1.931684},{"lat":47.36887,"lon":-1.93295},{"lat":47.367737,"lon":-1.936008},{"lat":47.367424,"lon":-1.936748},{"lat":47.366988,"lon":-1.936802},{"lat":47.366763,"lon":-1.937027},{"lat":47.364714,"lon":-1.939462},{"lat":47.363253,"lon":-1.940889},{"lat":47.362403,"lon":-1.941404},{"lat":47.361684,"lon":-1.941833},{"lat":47.360601,"lon":-1.94222},{"lat":47.360354,"lon":-1.942316},{"lat":47.360048,"lon":-1.943175},{"lat":47.360375,"lon":-1.944516},{"lat":47.360957,"lon":-1.944296},{"lat":47.361411,"lon":-1.944317},{"lat":47.361796,"lon":-1.944537},{"lat":47.362032,"lon":-1.944714},{"lat":47.362203,"lon":-1.945449},{"lat":47.362258,"lon":-1.945959},{"lat":47.362225,"lon":-1.946468},{"lat":47.362138,"lon":-1.946903},{"lat":47.361942,"lon":-1.94737},{"lat":47.360811,"lon":-1.949274},{"lat":47.360673,"lon":-1.949789},{"lat":47.360655,"lon":-1.950358},{"lat":47.36075,"lon":-1.950712},{"lat":47.361051,"lon":-1.951548},{"lat":47.361088,"lon":-1.95194},{"lat":47.361015,"lon":-1.952294},{"lat":47.360797,"lon":-1.953185},{"lat":47.360481,"lon":-1.954617},{"lat":47.360906,"lon":-1.955523},{"lat":47.360731,"lon":-1.955727},{"lat":47.359452,"lon":-1.955792},{"lat":47.359652,"lon":-1.957229},{"lat":47.359627,"lon":-1.95944},{"lat":47.359736,"lon":-1.959976},{"lat":47.360056,"lon":-1.960684},{"lat":47.36015,"lon":-1.961188},{"lat":47.360077,"lon":-1.961671},{"lat":47.359569,"lon":-1.963055},{"lat":47.359532,"lon":-1.963656},{"lat":47.359678,"lon":-1.965823},{"lat":47.358479,"lon":-1.972518},{"lat":47.354125,"lon":-1.996626},{"lat":47.353983,"lon":-1.99706},{"lat":47.353998,"lon":-1.99735},{"lat":47.354285,"lon":-1.998675},{"lat":47.354343,"lon":-2.001218},{"lat":47.354706,"lon":-2.011356},{"lat":47.354859,"lon":-2.015584},{"lat":47.354983,"lon":-2.019253},{"lat":47.356291,"lon":-2.027922},{"lat":47.356683,"lon":-2.029252},{"lat":47.357774,"lon":-2.031988},{"lat":47.358195,"lon":-2.033168},{"lat":47.358442,"lon":-2.03393}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EPrinqiuau - \u003Ci\u003Eles-Six-Croix\u003C/i\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Prinqiuau - les-Six-Croix\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.356095,"lon":-2.051611},{"lat":47.353289,"lon":-2.053585},{"lat":47.352824,"lon":-2.05425},{"lat":47.350992,"lon":-2.059765},{"lat":47.348637,"lon":-2.06882},{"lat":47.348143,"lon":-2.069979},{"lat":47.345337,"lon":-2.074699},{"lat":47.341731,"lon":-2.082875},{"lat":47.341164,"lon":-2.085686},{"lat":47.340524,"lon":-2.090364},{"lat":47.340306,"lon":-2.09296},{"lat":47.339652,"lon":-2.105534},{"lat":47.339375,"lon":-2.107036},{"lat":47.339201,"lon":-2.10753}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ETravers\u00e9e de Montoir-de-Bretagne\n\u003C/p\u003E\u003C/div\u003E","title":"Travers\u00e9e de Montoir-de-Bretagne\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.326185,"lon":-2.141519},{"lat":47.326127,"lon":-2.145231},{"lat":47.326549,"lon":-2.14802},{"lat":47.326781,"lon":-2.150509},{"lat":47.327058,"lon":-2.151411},{"lat":47.327465,"lon":-2.152226},{"lat":47.327785,"lon":-2.153363},{"lat":47.327843,"lon":-2.154329},{"lat":47.326709,"lon":-2.155724},{"lat":47.326287,"lon":-2.162654},{"lat":47.326534,"lon":-2.163491},{"lat":47.326229,"lon":-2.163899},{"lat":47.325923,"lon":-2.16892},{"lat":47.324891,"lon":-2.171302},{"lat":47.324847,"lon":-2.171881},{"lat":47.324745,"lon":-2.172257}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESaint-Nazaire - La Baule\n\u003C/p\u003E\u003C/div\u003E","title":"Saint-Nazaire - La Baule\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.274284,"lon":-2.213638},{"lat":47.274984,"lon":-2.219168},{"lat":47.275441,"lon":-2.220909},{"lat":47.276462,"lon":-2.223103},{"lat":47.276622,"lon":-2.223815},{"lat":47.276731,"lon":-2.224618},{"lat":47.276933,"lon":-2.226794},{"lat":47.277029,"lon":-2.228296},{"lat":47.277018,"lon":-2.228848},{"lat":47.276882,"lon":-2.229905},{"lat":47.276806,"lon":-2.231649},{"lat":47.276882,"lon":-2.232485},{"lat":47.277399,"lon":-2.23451},{"lat":47.277424,"lon":-2.235535},{"lat":47.277535,"lon":-2.236603},{"lat":47.277781,"lon":-2.237517},{"lat":47.278023,"lon":-2.238998},{"lat":47.27821,"lon":-2.239497},{"lat":47.278791,"lon":-2.240612},{"lat":47.278896,"lon":-2.24098},{"lat":47.278947,"lon":-2.241578},{"lat":47.278833,"lon":-2.246379},{"lat":47.278431,"lon":-2.249576},{"lat":47.278462,"lon":-2.249934},{"lat":47.278591,"lon":-2.250263},{"lat":47.278904,"lon":-2.250588},{"lat":47.279126,"lon":-2.250631},{"lat":47.279642,"lon":-2.250515},{"lat":47.279892,"lon":-2.250588},{"lat":47.280867,"lon":-2.2514},{"lat":47.281024,"lon":-2.251669},{"lat":47.281091,"lon":-2.252001},{"lat":47.281137,"lon":-2.257614},{"lat":47.281069,"lon":-2.257939},{"lat":47.280938,"lon":-2.258199},{"lat":47.280198,"lon":-2.25921},{"lat":47.280016,"lon":-2.259749},{"lat":47.279564,"lon":-2.262228},{"lat":47.279558,"lon":-2.262629},{"lat":47.279632,"lon":-2.263126},{"lat":47.280076,"lon":-2.264736},{"lat":47.280208,"lon":-2.265642},{"lat":47.28017,"lon":-2.266208},{"lat":47.279992,"lon":-2.266938},{"lat":47.279883,"lon":-2.267737},{"lat":47.279557,"lon":-2.268933},{"lat":47.279413,"lon":-2.270028},{"lat":47.279388,"lon":-2.270666},{"lat":47.279411,"lon":-2.274807},{"lat":47.279466,"lon":-2.275298},{"lat":47.280007,"lon":-2.276945},{"lat":47.280263,"lon":-2.278147},{"lat":47.280472,"lon":-2.279802},{"lat":47.280531,"lon":-2.280955},{"lat":47.28046,"lon":-2.281607},{"lat":47.280236,"lon":-2.282816},{"lat":47.280004,"lon":-2.283707},{"lat":47.279015,"lon":-2.286162},{"lat":47.278933,"lon":-2.286492},{"lat":47.278324,"lon":-2.291019},{"lat":47.278294,"lon":-2.294294},{"lat":47.278409,"lon":-2.295389},{"lat":47.278713,"lon":-2.297025},{"lat":47.278846,"lon":-2.298183},{"lat":47.27892,"lon":-2.300005},{"lat":47.279068,"lon":-2.300927},{"lat":47.279691,"lon":-2.302389},{"lat":47.280226,"lon":-2.302982},{"lat":47.280411,"lon":-2.303264},{"lat":47.280757,"lon":-2.304039},{"lat":47.282703,"lon":-2.310984},{"lat":47.283248,"lon":-2.312555},{"lat":47.283329,"lon":-2.313175},{"lat":47.283362,"lon":-2.314481},{"lat":47.283238,"lon":-2.315643},{"lat":47.283217,"lon":-2.316297},{"lat":47.283326,"lon":-2.31723},{"lat":47.283304,"lon":-2.317735},{"lat":47.28318,"lon":-2.318679},{"lat":47.283049,"lon":-2.320433},{"lat":47.283084,"lon":-2.321023},{"lat":47.283297,"lon":-2.322402},{"lat":47.283986,"lon":-2.325508},{"lat":47.284891,"lon":-2.328667},{"lat":47.285362,"lon":-2.330773},{"lat":47.285678,"lon":-2.331934},{"lat":47.286221,"lon":-2.333571},{"lat":47.286506,"lon":-2.334204},{"lat":47.287241,"lon":-2.335169},{"lat":47.28746,"lon":-2.335716},{"lat":47.287578,"lon":-2.336304},{"lat":47.287669,"lon":-2.337686},{"lat":47.287771,"lon":-2.338177},{"lat":47.288375,"lon":-2.339979},{"lat":47.28858,"lon":-2.340926},{"lat":47.288755,"lon":-2.342415},{"lat":47.290659,"lon":-2.352518}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAncien trac\u00e9 au niveau du port de La Baule - Le Pouliguen, d\u00e9class\u00e9 le 30-3-1990\n\u003C/p\u003E\u003C/div\u003E","title":"Ancien trac\u00e9 au niveau du port de La Baule - Le Pouliguen, d\u00e9class\u00e9 le 30-3-1990\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.279298,"lon":-2.422459},{"lat":47.279103,"lon":-2.423087},{"lat":47.278268,"lon":-2.42733},{"lat":47.278319,"lon":-2.428307},{"lat":47.278726,"lon":-2.433027},{"lat":47.27872,"lon":-2.433403},{"lat":47.27848,"lon":-2.435624},{"lat":47.278396,"lon":-2.436013},{"lat":47.277709,"lon":-2.438531}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ETrac\u00e9 d\u00e9vi\u00e9 en 1998 pour la suppression du passage \u00e0 niveau de Kervalet \u00e0 Batz-sur-Mer\n\u003C/p\u003E\u003C/div\u003E","title":"Trac\u00e9 d\u00e9vi\u00e9 en 1998 pour la suppression du passage \u00e0 niveau de Kervalet \u00e0 Batz-sur-Mer\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.2787,"lon":-2.456512},{"lat":47.278709,"lon":-2.457158},{"lat":47.278567,"lon":-2.458633},{"lat":47.278565,"lon":-2.460226},{"lat":47.278688,"lon":-2.461484}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELaval - Nozay\n\u003C/p\u003E\u003C/div\u003E","title":"Laval - Nozay\n","link":"","strokeColor":"#F8B708","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.061274,"lon":-0.784235},{"lat":48.057316,"lon":-0.790157},{"lat":48.053587,"lon":-0.793161},{"lat":48.046071,"lon":-0.79917},{"lat":48.035167,"lon":-0.804663},{"lat":48.031207,"lon":-0.807323},{"lat":48.024261,"lon":-0.814619},{"lat":48.020472,"lon":-0.823202},{"lat":48.006233,"lon":-0.835905},{"lat":47.998021,"lon":-0.846806},{"lat":47.988428,"lon":-0.854959},{"lat":47.976766,"lon":-0.869379},{"lat":47.973778,"lon":-0.876675},{"lat":47.948144,"lon":-0.909805},{"lat":47.946821,"lon":-0.910063},{"lat":47.945901,"lon":-0.912895},{"lat":47.942854,"lon":-0.914011},{"lat":47.937622,"lon":-0.915041},{"lat":47.913926,"lon":-0.923882},{"lat":47.903973,"lon":-0.92886},{"lat":47.897125,"lon":-0.92886},{"lat":47.895514,"lon":-0.929632},{"lat":47.893672,"lon":-0.931091},{"lat":47.891543,"lon":-0.933666},{"lat":47.890564,"lon":-0.93461},{"lat":47.878246,"lon":-0.940361},{"lat":47.872086,"lon":-0.941048},{"lat":47.864774,"lon":-0.942936},{"lat":47.861664,"lon":-0.943623},{"lat":47.851586,"lon":-0.947142},{"lat":47.850376,"lon":-0.948515},{"lat":47.84836,"lon":-0.948343},{"lat":47.843349,"lon":-0.947142},{"lat":47.841966,"lon":-0.947657},{"lat":47.841563,"lon":-0.948687},{"lat":47.841736,"lon":-0.950403},{"lat":47.844847,"lon":-0.962591},{"lat":47.845365,"lon":-0.964394},{"lat":47.827044,"lon":-0.99864},{"lat":47.81252,"lon":-1.025848},{"lat":47.79067,"lon":-1.069365},{"lat":47.771118,"lon":-1.109705},{"lat":47.758079,"lon":-1.13657},{"lat":47.740362,"lon":-1.172361},{"lat":47.740593,"lon":-1.174936},{"lat":47.740189,"lon":-1.176395},{"lat":47.74042,"lon":-1.178455},{"lat":47.743825,"lon":-1.19133},{"lat":47.744922,"lon":-1.264629},{"lat":47.737419,"lon":-1.309862},{"lat":47.727374,"lon":-1.327372},{"lat":47.719192,"lon":-1.363736},{"lat":47.719066,"lon":-1.364543},{"lat":47.71873,"lon":-1.370497},{"lat":47.717818,"lon":-1.370805},{"lat":47.717405,"lon":-1.370746},{"lat":47.716544,"lon":-1.370255},{"lat":47.716106,"lon":-1.37022},{"lat":47.712525,"lon":-1.371431},{"lat":47.710745,"lon":-1.37272},{"lat":47.709906,"lon":-1.37313},{"lat":47.709749,"lon":-1.373256},{"lat":47.709356,"lon":-1.373916},{"lat":47.708395,"lon":-1.375292},{"lat":47.707962,"lon":-1.376169},{"lat":47.707554,"lon":-1.377335},{"lat":47.706369,"lon":-1.383027},{"lat":47.704029,"lon":-1.393934},{"lat":47.702484,"lon":-1.400242},{"lat":47.698787,"lon":-1.407623},{"lat":47.692432,"lon":-1.423759},{"lat":47.686424,"lon":-1.436462},{"lat":47.683072,"lon":-1.44556},{"lat":47.681917,"lon":-1.4538},{"lat":47.679027,"lon":-1.464958},{"lat":47.674635,"lon":-1.478691},{"lat":47.672786,"lon":-1.483841},{"lat":47.667121,"lon":-1.494141},{"lat":47.664347,"lon":-1.497746},{"lat":47.66215,"lon":-1.50135},{"lat":47.644343,"lon":-1.514225},{"lat":47.638675,"lon":-1.518517},{"lat":47.621554,"lon":-1.536541},{"lat":47.615306,"lon":-1.539803},{"lat":47.606163,"lon":-1.553192},{"lat":47.588105,"lon":-1.601429},{"lat":47.582431,"lon":-1.61911},{"lat":47.578379,"lon":-1.624947},{"lat":47.57791,"lon":-1.629662}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ETronc commun avec la N137 \u00e0 Nozay\n\u003C/p\u003E\u003C/div\u003E","title":"Tronc commun avec la N137 \u00e0 Nozay\n","link":"","strokeColor":"#F412F1","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.57791,"lon":-1.629662},{"lat":47.566662,"lon":-1.634361},{"lat":47.564056,"lon":-1.634876},{"lat":47.562043,"lon":-1.634929},{"lat":47.559596,"lon":-1.634511},{"lat":47.55405,"lon":-1.632548},{"lat":47.552384,"lon":-1.632328},{"lat":47.55056,"lon":-1.632473},{"lat":47.548402,"lon":-1.633138},{"lat":47.545125,"lon":-1.634913},{"lat":47.543019,"lon":-1.635396}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EN171 Nozay - Savenay\n\u003C/p\u003E\u003C/div\u003E","title":"N171 Nozay - Savenay\n","link":"","strokeColor":"#F30A2B","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.543019,"lon":-1.635396},{"lat":47.543004,"lon":-1.636512},{"lat":47.542802,"lon":-1.637692},{"lat":47.542381,"lon":-1.63883},{"lat":47.529068,"lon":-1.663785},{"lat":47.52278,"lon":-1.675565},{"lat":47.517317,"lon":-1.685779},{"lat":47.507722,"lon":-1.703782},{"lat":47.497024,"lon":-1.723716},{"lat":47.483641,"lon":-1.748843},{"lat":47.483119,"lon":-1.74953},{"lat":47.482235,"lon":-1.750174},{"lat":47.48077,"lon":-1.750474},{"lat":47.479566,"lon":-1.751053},{"lat":47.478406,"lon":-1.75204},{"lat":47.477202,"lon":-1.753263},{"lat":47.47626,"lon":-1.754465},{"lat":47.47539,"lon":-1.756053},{"lat":47.474505,"lon":-1.758134},{"lat":47.473881,"lon":-1.759164},{"lat":47.473112,"lon":-1.760323},{"lat":47.472315,"lon":-1.763027},{"lat":47.472344,"lon":-1.764958},{"lat":47.472155,"lon":-1.76616},{"lat":47.471981,"lon":-1.766353},{"lat":47.471154,"lon":-1.766803},{"lat":47.470458,"lon":-1.767361},{"lat":47.469849,"lon":-1.768091},{"lat":47.46747,"lon":-1.768992},{"lat":47.466774,"lon":-1.769593},{"lat":47.466397,"lon":-1.770108},{"lat":47.466252,"lon":-1.770751},{"lat":47.460942,"lon":-1.785429},{"lat":47.458926,"lon":-1.789484},{"lat":47.458171,"lon":-1.790578},{"lat":47.443226,"lon":-1.813388},{"lat":47.432671487806964,"lon":-1.8295462370928135},{"lat":47.43158310635343,"lon":-1.8311663903172075},{"lat":47.429393269113646,"lon":-1.8339558876926958},{"lat":47.42797593847636,"lon":-1.8344781815781062},{"lat":47.425994854756325,"lon":-1.8353272635887379},{"lat":47.425198615752656,"lon":-1.8355016675393472},{"lat":47.4233517925116,"lon":-1.8357561627097994},{"lat":47.422746200498416,"lon":-1.8357746234870547},{"lat":47.42232103057207,"lon":-1.8357105002937715},{"lat":47.42187407998925,"lon":-1.8355820040842445},{"lat":47.420943871432534,"lon":-1.8351962656324758},{"lat":47.418854191841845,"lon":-1.8344632216657146},{"lat":47.41578491146384,"lon":-1.833479432602644},{"lat":47.41502261484025,"lon":-1.8346488757331372},{"lat":47.41346373474577,"lon":-1.8372557410975787},{"lat":47.41283925692618,"lon":-1.8386007826695732},{"lat":47.41225842801055,"lon":-1.8400706332097343},{"lat":47.41187362532611,"lon":-1.8413688223729423},{"lat":47.41104745698331,"lon":-1.8445369311608601},{"lat":47.410470886289886,"lon":-1.8466174249327878},{"lat":47.40993894286548,"lon":-1.8480686846260141},{"lat":47.4093362995539,"lon":-1.8494741621498179},{"lat":47.40873364934676,"lon":-1.8505792322639536},{"lat":47.40795335822379,"lon":-1.8518729177885689},{"lat":47.40708791997413,"lon":-1.8532682684508472},{"lat":47.404470113199146,"lon":-1.857362863731737},{"lat":47.40300865633925,"lon":-1.8597822412066307},{"lat":47.402663,"lon":-1.860251},{"lat":47.391508,"lon":-1.879563},{"lat":47.383808,"lon":-1.893768},{"lat":47.379478,"lon":-1.902523},{"lat":47.377691,"lon":-1.906021},{"lat":47.375918,"lon":-1.909626},{"lat":47.373303,"lon":-1.914797},{"lat":47.372634,"lon":-1.916041},{"lat":47.371791,"lon":-1.917136},{"lat":47.37153,"lon":-1.917458},{"lat":47.371381,"lon":-1.917876}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EN171 Savenay - Trignac\n\u003C/p\u003E\u003C/div\u003E","title":"N171 Savenay - Trignac\n","link":"","strokeColor":"#F30A2B","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.371381,"lon":-1.917876},{"lat":47.371236,"lon":-1.91926},{"lat":47.371065,"lon":-1.921277},{"lat":47.371188,"lon":-1.922393},{"lat":47.371544,"lon":-1.923541},{"lat":47.372293,"lon":-1.925579},{"lat":47.372496,"lon":-1.927382},{"lat":47.372431,"lon":-1.928498},{"lat":47.37222,"lon":-1.92956},{"lat":47.371145,"lon":-1.933079},{"lat":47.370476,"lon":-1.934656},{"lat":47.369706,"lon":-1.936158},{"lat":47.367868,"lon":-1.939173},{"lat":47.367039,"lon":-1.940782},{"lat":47.366385,"lon":-1.942413},{"lat":47.365804,"lon":-1.944441},{"lat":47.363006,"lon":-1.956854},{"lat":47.362323,"lon":-1.959611},{"lat":47.36087,"lon":-1.964965},{"lat":47.360048,"lon":-1.967883},{"lat":47.359547,"lon":-1.969975},{"lat":47.358958,"lon":-1.973215},{"lat":47.356901,"lon":-1.98477},{"lat":47.356553,"lon":-1.987302},{"lat":47.356371,"lon":-1.989512},{"lat":47.356305,"lon":-1.991733},{"lat":47.356465,"lon":-1.994222},{"lat":47.357156,"lon":-2.000477},{"lat":47.357359,"lon":-2.003417},{"lat":47.357512,"lon":-2.007226},{"lat":47.357512,"lon":-2.010702},{"lat":47.357396,"lon":-2.020648},{"lat":47.357526,"lon":-2.024263},{"lat":47.357795,"lon":-2.027718},{"lat":47.35898,"lon":-2.039069},{"lat":47.359024,"lon":-2.040163},{"lat":47.359002,"lon":-2.043006},{"lat":47.358842,"lon":-2.044744},{"lat":47.358486,"lon":-2.046493},{"lat":47.357883,"lon":-2.048414},{"lat":47.357287,"lon":-2.049819},{"lat":47.351079,"lon":-2.063702},{"lat":47.349415,"lon":-2.0675},{"lat":47.349022,"lon":-2.068681},{"lat":47.348695,"lon":-2.069646},{"lat":47.345606,"lon":-2.081845},{"lat":47.34389,"lon":-2.089076},{"lat":47.342203,"lon":-2.096575},{"lat":47.341316,"lon":-2.100427},{"lat":47.340226,"lon":-2.105212},{"lat":47.339353,"lon":-2.107884},{"lat":47.338466,"lon":-2.109933},{"lat":47.337507,"lon":-2.11166},{"lat":47.332061,"lon":-2.121005},{"lat":47.330599,"lon":-2.123698},{"lat":47.329865,"lon":-2.12549},{"lat":47.328992,"lon":-2.128354},{"lat":47.328556,"lon":-2.130114},{"lat":47.326338,"lon":-2.139856},{"lat":47.325836,"lon":-2.14257},{"lat":47.324403,"lon":-2.152269},{"lat":47.324171,"lon":-2.154715},{"lat":47.324025,"lon":-2.157311},{"lat":47.324076,"lon":-2.159811},{"lat":47.324541,"lon":-2.170154},{"lat":47.324469,"lon":-2.173083},{"lat":47.32428,"lon":-2.175529},{"lat":47.32396,"lon":-2.177685},{"lat":47.3226,"lon":-2.184498},{"lat":47.321749,"lon":-2.188339},{"lat":47.321123,"lon":-2.189991},{"lat":47.320287,"lon":-2.191622},{"lat":47.318636,"lon":-2.194036},{"lat":47.317159,"lon":-2.195914},{"lat":47.31577,"lon":-2.197405},{"lat":47.310882,"lon":-2.2019},{"lat":47.309653,"lon":-2.202877},{"lat":47.307616,"lon":-2.204293},{"lat":47.306408,"lon":-2.204937},{"lat":47.304997,"lon":-2.205591}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ED213 Trignac - La Baule\n\u003C/p\u003E\u003C/div\u003E","title":"D213 Trignac - La Baule\n","link":"","strokeColor":"#F8B708","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.306077,"lon":-2.205087},{"lat":47.305913,"lon":-2.206085},{"lat":47.305455,"lon":-2.208209},{"lat":47.304895,"lon":-2.209958},{"lat":47.304131,"lon":-2.211632},{"lat":47.303331,"lon":-2.212887},{"lat":47.302399,"lon":-2.214024},{"lat":47.301272,"lon":-2.215054},{"lat":47.298878,"lon":-2.216588},{"lat":47.297568,"lon":-2.217629},{"lat":47.296215,"lon":-2.21912},{"lat":47.29524,"lon":-2.220612},{"lat":47.294148,"lon":-2.222832},{"lat":47.293464,"lon":-2.224721},{"lat":47.288552,"lon":-2.243346},{"lat":47.288239,"lon":-2.244473},{"lat":47.287693,"lon":-2.24606},{"lat":47.286951,"lon":-2.247798},{"lat":47.286442,"lon":-2.249161},{"lat":47.286172,"lon":-2.250395},{"lat":47.286034,"lon":-2.25209},{"lat":47.285838,"lon":-2.258742},{"lat":47.285758,"lon":-2.261027},{"lat":47.285605,"lon":-2.26342},{"lat":47.285321,"lon":-2.265898},{"lat":47.284506,"lon":-2.270833},{"lat":47.283967,"lon":-2.273837},{"lat":47.283669,"lon":-2.276144},{"lat":47.283465,"lon":-2.278858},{"lat":47.283472,"lon":-2.283343},{"lat":47.283771,"lon":-2.291293},{"lat":47.284062,"lon":-2.296593},{"lat":47.284287,"lon":-2.299082},{"lat":47.284724,"lon":-2.303009},{"lat":47.285386,"lon":-2.307537},{"lat":47.287985,"lon":-2.324488},{"lat":47.28864,"lon":-2.327267},{"lat":47.289527,"lon":-2.329928},{"lat":47.291601,"lon":-2.335324},{"lat":47.292576,"lon":-2.337985},{"lat":47.293166,"lon":-2.340152},{"lat":47.294377,"lon":-2.345557}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003Eex-RN171 - D245 La Baule - Le Croisic\n\u003C/p\u003E\u003C/div\u003E","title":"ex-RN171 - D245 La Baule - Le Croisic\n","link":"","strokeColor":"#F8B708","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.294377,"lon":-2.345557},{"lat":47.293249,"lon":-2.346897},{"lat":47.290659,"lon":-2.352518},{"lat":47.291046,"lon":-2.354593},{"lat":47.291389,"lon":-2.355821},{"lat":47.291758,"lon":-2.356475},{"lat":47.292159,"lon":-2.356918},{"lat":47.294001,"lon":-2.358549},{"lat":47.294406,"lon":-2.359096},{"lat":47.294928,"lon":-2.360676},{"lat":47.295291,"lon":-2.361548},{"lat":47.295249,"lon":-2.361768},{"lat":47.292763,"lon":-2.363685},{"lat":47.292327,"lon":-2.363848},{"lat":47.291752,"lon":-2.363894},{"lat":47.291461,"lon":-2.364025},{"lat":47.289833,"lon":-2.365428},{"lat":47.28956,"lon":-2.365758},{"lat":47.288726,"lon":-2.367695},{"lat":47.288514,"lon":-2.36858},{"lat":47.288488,"lon":-2.369038},{"lat":47.288776,"lon":-2.370267},{"lat":47.288947,"lon":-2.370605},{"lat":47.289406,"lon":-2.371124},{"lat":47.289545,"lon":-2.371338},{"lat":47.289644,"lon":-2.371625},{"lat":47.289693,"lon":-2.371953},{"lat":47.289591,"lon":-2.373326},{"lat":47.289438,"lon":-2.374015},{"lat":47.289083,"lon":-2.374912},{"lat":47.28816,"lon":-2.37687},{"lat":47.287709,"lon":-2.378082},{"lat":47.2875,"lon":-2.379182},{"lat":47.287465,"lon":-2.380346},{"lat":47.287632,"lon":-2.381746},{"lat":47.287776,"lon":-2.382445},{"lat":47.288316,"lon":-2.385317},{"lat":47.288316,"lon":-2.385612},{"lat":47.280477,"lon":-2.418641},{"lat":47.279298,"lon":-2.422459},{"lat":47.279344,"lon":-2.422768},{"lat":47.282236,"lon":-2.427914},{"lat":47.282552,"lon":-2.429499},{"lat":47.282565,"lon":-2.430448},{"lat":47.282194,"lon":-2.432476},{"lat":47.281921,"lon":-2.433243},{"lat":47.279397,"lon":-2.436983},{"lat":47.278719,"lon":-2.43775},{"lat":47.277709,"lon":-2.438531},{"lat":47.27719,"lon":-2.440432},{"lat":47.277281,"lon":-2.443978},{"lat":47.277443,"lon":-2.445257},{"lat":47.277165,"lon":-2.447481},{"lat":47.277172,"lon":-2.447789},{"lat":47.277467,"lon":-2.449931},{"lat":47.277755,"lon":-2.451644},{"lat":47.277769,"lon":-2.452615},{"lat":47.278191,"lon":-2.454165},{"lat":47.27851,"lon":-2.454809},{"lat":47.2787,"lon":-2.456512},{"lat":47.27864,"lon":-2.457149},{"lat":47.278333,"lon":-2.457782},{"lat":47.277561,"lon":-2.45849},{"lat":47.277409,"lon":-2.459003},{"lat":47.277467,"lon":-2.459668},{"lat":47.277722,"lon":-2.460108},{"lat":47.278286,"lon":-2.460605},{"lat":47.27858,"lon":-2.461084},{"lat":47.278688,"lon":-2.461484},{"lat":47.278746,"lon":-2.462112},{"lat":47.27869,"lon":-2.462885},{"lat":47.2779,"lon":-2.46728},{"lat":47.277904,"lon":-2.474914},{"lat":47.278088,"lon":-2.476126},{"lat":47.278091,"lon":-2.476566},{"lat":47.278165,"lon":-2.476958},{"lat":47.278417,"lon":-2.477694},{"lat":47.278563,"lon":-2.478245},{"lat":47.282119,"lon":-2.502064},{"lat":47.282225,"lon":-2.502307},{"lat":47.282354,"lon":-2.502453},{"lat":47.287603,"lon":-2.505862},{"lat":47.288551,"lon":-2.506307},{"lat":47.288736,"lon":-2.506463},{"lat":47.289209,"lon":-2.507238},{"lat":47.289491,"lon":-2.50746},{"lat":47.289934,"lon":-2.507511},{"lat":47.290848,"lon":-2.508042},{"lat":47.291281,"lon":-2.508144},{"lat":47.291795,"lon":-2.508445},{"lat":47.292528,"lon":-2.508701},{"lat":47.292785,"lon":-2.509}]},{"text":"","title":"","link":"","strokeColor":"#1EFB07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.30432,"lon":-2.205849},{"lat":47.302137,"lon":-2.206621},{"lat":47.293493,"lon":-2.208381},{"lat":47.285342,"lon":-2.210578}]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":8,"layers":[],"controls":["pan","zoom","streetview","type","scale"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"locations":[{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELaval\n\u003C/p\u003E\u003C/div\u003E","title":"Laval\n","link":"","lat":48.061274,"lon":-0.784235,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ENozay\n\u003C/p\u003E\u003C/div\u003E","title":"Nozay\n","link":"","lat":47.543019,"lon":-1.635396,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELe Croisic\n\u003C/p\u003E\u003C/div\u003E","title":"Le Croisic\n","link":"","lat":47.292785,"lon":-2.509,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESaint-Nazaire\n\u003C/p\u003E\u003C/div\u003E","title":"Saint-Nazaire\n","link":"","lat":47.304997,"lon":-2.205591,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELa Baule\n\u003C/p\u003E\u003C/div\u003E","title":"La Baule\n","link":"","lat":47.290659,"lon":-2.352518,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé actuel.
En orange	Tracé déclassé en 2006.
En jaune	Tracé déclassé après ouverture de la voie express.
En vert	Tracé cédé à la RN471 en 1979 (déclassé en 2006).
En violet	Tronc commun avec la RN137 à Nozay.
Pour plus d'informations sur les sources cartographiques, consulter cet article.
La carte ne s'affiche pas ? Merci d'éditer l'article et de le sauvegarder sans aucune modification.

Flèches Michelin dans la commune de Soudan sur l'ex-RN171 (actuellement D771).
© Brice Daviaud

Laval - Nozay (avant 2006)

• Mayenne (53) - D771
  • D1 D21 D26 D30 D31 D32 D57 D962 Laval Château, Centre Ancien, Nombreux Monuments
  • D910
  • Le Haut-Chêne
  • La Paillardière
  • Etrogné
  • Cossé-le-Vivien Musée Robert-Tatin D4 D124
  • Craon Halles, Château D22 D25 D25
  • La Vallée L'Uzure
  • Saint-Martin-du-Limet
  • Renazé Le Chéran D110
  •  Forêt de Lourzais
• Maine-et-Loire (49) - D771
  • La Marinière
  • Virebouton
  • Pouancé Château Médiéval, Nombreux Monuments... D6 D775 D878
  • Hôtellerie
• Loire-Atlantique (44) - D771
  • Le Dougilard
  • La Léodière D14
  • Soudan D14
  • La Chère
  • Châteaubriant Château, Centre Ancien D163 D178 D771 D772
  • Louisfert Château, Calvaire D775
  • Saint-Vincent-des-Landes D69
  • Le Cône
  • Treffieux Le Don
  • L'Angle
  • Nozay Menhir, Église XII-XVI^e, Château de La Touche  N137 E3   D771  D2 D39 D121 D124

Nozay - Saint-Nazaire (actuel)

• Loire-Atlantique (44) - N171
  • Nozay Menhir, Église XII-XVI^e, Château de La Touche  N137 E3   N171  D2 D39 D121 D124
  • La Grigonnais
  • La Bretonnière
  • La Noë de la Barre
  • Blain L'Isac / Canal de Nantes à Brest Château D15 D33 D42 D164
  • Tour
  • D81
  • Bouvron D16 VC
  • La Haie
  • La Croix-Blanche
  • Savenay La Moëre  N165 E60 D3 D17 D217 VC
  • Prinquiau D100
  • Canal de la Taillée
  • D4
  • Chaussée-de-Nion D773
  • Montoir-de-Bretagne D50 D971

Saint-Nazaire - Le Croisic (avant 2006)

• Loire-Atlantique (44) - VC
  • Saint-Nazaire Base sous-marine D47 D92 D213 D971 VC
• Loire-Atlantique (44) - D971
  • L'Immaculée D47 D492
  • Les Quatre-Vents D392
  • La Baule-Escoublac Phare D92 D192
• Loire-Atlantique (44) - D245
  • Le Pouliguen D45
  • Batz-sur-Mer Église, Citernes D45 D774
  • Le Croisic Menhir, Chapelles, Nombreux Monuments... D45

Granville - Carentan (avant 1973)

Chargement de la carte...

{"type":"HYBRID","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"mappingservice":"googlemaps3","width":"550px","height":"450px","centre":false,"title":"","label":"","icon":"","lines":[{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ETrac\u00e9 originel \u00e0 Coutances d\u00e9class\u00e9 le 19-9-1967\n\u003C/p\u003E\u003C/div\u003E","title":"Trac\u00e9 originel \u00e0 Coutances d\u00e9class\u00e9 le 19-9-1967\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":49.035273,"lon":-1.444324},{"lat":49.035702,"lon":-1.444008},{"lat":49.036595,"lon":-1.443739},{"lat":49.036864,"lon":-1.443748},{"lat":49.037118,"lon":-1.443857},{"lat":49.037397,"lon":-1.444057},{"lat":49.037919,"lon":-1.44469},{"lat":49.038779,"lon":-1.445448},{"lat":49.039158,"lon":-1.445624},{"lat":49.039391,"lon":-1.445644},{"lat":49.039913,"lon":-1.445527},{"lat":49.040219,"lon":-1.44556},{"lat":49.040722,"lon":-1.445813},{"lat":49.040752,"lon":-1.445999},{"lat":49.040441,"lon":-1.447295},{"lat":49.040466,"lon":-1.447602},{"lat":49.040717,"lon":-1.448164}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ETrac\u00e9 originel \u00e0 Saint-Sauveur-Lendelin d\u00e9class\u00e9 le 23-8-1957\n\u003C/p\u003E\u003C/div\u003E","title":"Trac\u00e9 originel \u00e0 Saint-Sauveur-Lendelin d\u00e9class\u00e9 le 23-8-1957\n","link":"","strokeColor":"#FCFF07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":49.150979,"lon":-1.412198},{"lat":49.151168,"lon":-1.412084},{"lat":49.151612,"lon":-1.411423},{"lat":49.151887,"lon":-1.411327},{"lat":49.152207,"lon":-1.411441},{"lat":49.152738,"lon":-1.411918},{"lat":49.152966,"lon":-1.41204}]},{"text":"","title":"","link":"","strokeColor":"#F30A2B","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.837551,"lon":-1.597916},{"lat":48.838431,"lon":-1.598948},{"lat":48.838508,"lon":-1.598922},{"lat":48.838628,"lon":-1.598667},{"lat":48.83878,"lon":-1.598142},{"lat":48.839084,"lon":-1.597661},{"lat":48.839246,"lon":-1.597108},{"lat":48.839256,"lon":-1.59645},{"lat":48.839097,"lon":-1.595757},{"lat":48.838784,"lon":-1.594786},{"lat":48.83871,"lon":-1.593434},{"lat":48.838807,"lon":-1.593251},{"lat":48.838964,"lon":-1.593275},{"lat":48.839046,"lon":-1.59346},{"lat":48.839058,"lon":-1.594719},{"lat":48.839181,"lon":-1.595009},{"lat":48.839357,"lon":-1.5951},{"lat":48.839523,"lon":-1.595031},{"lat":48.840449,"lon":-1.593964},{"lat":48.864538,"lon":-1.542793},{"lat":48.865161,"lon":-1.542008},{"lat":48.882373,"lon":-1.529562},{"lat":48.89509,"lon":-1.513657},{"lat":48.895505,"lon":-1.513418},{"lat":48.900032,"lon":-1.512582},{"lat":48.900455,"lon":-1.512437},{"lat":48.935816,"lon":-1.490176},{"lat":48.946667,"lon":-1.483291},{"lat":48.970606,"lon":-1.467861},{"lat":48.970848,"lon":-1.46778},{"lat":48.98846,"lon":-1.46865},{"lat":48.989547,"lon":-1.468382},{"lat":48.990398,"lon":-1.468036},{"lat":48.990794,"lon":-1.467698},{"lat":48.99182,"lon":-1.466582},{"lat":48.992483,"lon":-1.465406},{"lat":48.992818,"lon":-1.46502},{"lat":48.994176,"lon":-1.463899},{"lat":48.994809,"lon":-1.463789},{"lat":48.994905,"lon":-1.463682},{"lat":48.9955,"lon":-1.461101},{"lat":48.995676,"lon":-1.460857},{"lat":48.997315,"lon":-1.459932},{"lat":49.016457,"lon":-1.455568},{"lat":49.020499,"lon":-1.455106},{"lat":49.020872,"lon":-1.454983},{"lat":49.021935,"lon":-1.45428},{"lat":49.022471,"lon":-1.454117},{"lat":49.02548,"lon":-1.454603},{"lat":49.027741,"lon":-1.454606},{"lat":49.028046,"lon":-1.454447},{"lat":49.028255,"lon":-1.454131},{"lat":49.028503,"lon":-1.453381},{"lat":49.028487,"lon":-1.453196},{"lat":49.027984,"lon":-1.452072},{"lat":49.028014,"lon":-1.451849},{"lat":49.028169,"lon":-1.451774},{"lat":49.029732,"lon":-1.452349},{"lat":49.029995,"lon":-1.452247},{"lat":49.030168,"lon":-1.451866},{"lat":49.030314,"lon":-1.450921},{"lat":49.030344,"lon":-1.44973},{"lat":49.030428,"lon":-1.44937},{"lat":49.030586,"lon":-1.449097},{"lat":49.03107,"lon":-1.448705},{"lat":49.031205,"lon":-1.448491},{"lat":49.031682,"lon":-1.447233},{"lat":49.031849,"lon":-1.447008},{"lat":49.032543,"lon":-1.446584},{"lat":49.035273,"lon":-1.444324},{"lat":49.03588,"lon":-1.44412},{"lat":49.036665,"lon":-1.444332},{"lat":49.038933,"lon":-1.446346},{"lat":49.040717,"lon":-1.448164},{"lat":49.042037,"lon":-1.449366},{"lat":49.042362,"lon":-1.449406},{"lat":49.043264,"lon":-1.448805},{"lat":49.043886,"lon":-1.448765},{"lat":49.045783,"lon":-1.449563},{"lat":49.046437,"lon":-1.449649},{"lat":49.047084,"lon":-1.449445},{"lat":49.048445,"lon":-1.448558},{"lat":49.049242,"lon":-1.447791},{"lat":49.049667,"lon":-1.447282},{"lat":49.0536,"lon":-1.44133},{"lat":49.055341,"lon":-1.439658},{"lat":49.057703,"lon":-1.436732},{"lat":49.058134,"lon":-1.436321},{"lat":49.05995,"lon":-1.435378},{"lat":49.068922,"lon":-1.430263},{"lat":49.088442,"lon":-1.418355},{"lat":49.089084,"lon":-1.418084},{"lat":49.089818,"lon":-1.417942},{"lat":49.123879,"lon":-1.414756},{"lat":49.124281,"lon":-1.414616},{"lat":49.128657,"lon":-1.411768},{"lat":49.128976,"lon":-1.411741},{"lat":49.131199,"lon":-1.412923},{"lat":49.131504,"lon":-1.412968},{"lat":49.133528,"lon":-1.412714},{"lat":49.133875,"lon":-1.412746},{"lat":49.136113,"lon":-1.413421},{"lat":49.137003,"lon":-1.413518},{"lat":49.150979,"lon":-1.412198},{"lat":49.152966,"lon":-1.41204},{"lat":49.182076,"lon":-1.409272},{"lat":49.18227,"lon":-1.409197},{"lat":49.182605,"lon":-1.408987},{"lat":49.182735,"lon":-1.408969},{"lat":49.183228,"lon":-1.409116},{"lat":49.184143,"lon":-1.409113},{"lat":49.184389,"lon":-1.409058},{"lat":49.184598,"lon":-1.408892},{"lat":49.185096,"lon":-1.408064},{"lat":49.185194,"lon":-1.408013},{"lat":49.185313,"lon":-1.408045},{"lat":49.186023,"lon":-1.408499},{"lat":49.186378,"lon":-1.408477},{"lat":49.188566,"lon":-1.406786},{"lat":49.189318,"lon":-1.406544},{"lat":49.189487,"lon":-1.406339},{"lat":49.18953,"lon":-1.406073},{"lat":49.189506,"lon":-1.405785},{"lat":49.189121,"lon":-1.404362},{"lat":49.189056,"lon":-1.403764},{"lat":49.189112,"lon":-1.403275},{"lat":49.189243,"lon":-1.402849},{"lat":49.217088,"lon":-1.347105},{"lat":49.217943,"lon":-1.345871},{"lat":49.266217,"lon":-1.291925},{"lat":49.266679,"lon":-1.291351},{"lat":49.277095,"lon":-1.277009},{"lat":49.281287,"lon":-1.270963},{"lat":49.285869,"lon":-1.26437},{"lat":49.286177,"lon":-1.264009},{"lat":49.287432,"lon":-1.262972},{"lat":49.291142,"lon":-1.259317},{"lat":49.293058,"lon":-1.257256},{"lat":49.295051,"lon":-1.254198},{"lat":49.2954,"lon":-1.25379},{"lat":49.296466,"lon":-1.25277},{"lat":49.299588,"lon":-1.250483},{"lat":49.302518,"lon":-1.248432},{"lat":49.303086,"lon":-1.247746}]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":9,"layers":[],"controls":["pan","zoom","streetview","type","scale"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"locations":[{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EGranville\n\u003C/p\u003E\u003C/div\u003E","title":"Granville\n","link":"","lat":48.837551,"lon":-1.597916,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ECarentan\n\u003C/p\u003E\u003C/div\u003E","title":"Carentan\n","link":"","lat":49.303086,"lon":-1.247746,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé avant 1973.
En jaune	Ancien tracé à Saint-Sauveur-Lendelin déclassé en 1957 et à Coutances déclassé en 1967.
Pour plus d'informations sur les sources cartographiques, consulter cet article.
La carte ne s'affiche pas ? Merci d'éditer l'article et de le sauvegarder sans aucune modification.

• Manche (50) - D971^E5
  • D911 D924 D973 Granville le Boscq Église Notre-Dame-du-Cap-Lihou   Pointe du Roc
  • Donville-les-Bains
  • Bréville-sur-Mer D135
• Manche (50) - D971
  • Le Grand-Chemin
  • Coudeville-sur-Mer
• Manche (50) - D971^E6
  • Bréhal D13 D20 Ancienne Église XI-XII^e
• Manche (50) - D971
  • Muneville-sur-Mer
  • Quettreville-sur-Sienne
    • Quettreville-sur-Sienne
    • Hyenville D72 La Sienne
  • La Lande
• Manche (50) - D971^E3
  • Coutances Cathédrale, Nombreux Monuments D2 D7 D20 D44 D972 D972^E3
• Manche (50) - D971
  • Lescauderie
  • Monthuchon
  • La Houssaye
  • Saint-Sauveur-Villages
    • Saint-Sauveur-Lendelin Église XIV^e, Manoir, Château, Croix D53
    • Vaudrimesnil
    • L'Hôtel Bertrand
  • Orphelinat de Périers
  • Périers Église D68 D900
  • Les Plains
  • Le Sey
  • Raids
  • La Maugerie / La Roserie
  • Sainteny Les Forges
  • Le Varimesnil
• Manche (50) - D971^E9
  • Carentan-les-Marais Église, Centre Ville  N13  N174 D223 D913 D971 D974

Voie express

Historique

Déclarations d'utilité publique

• 12 08 1964 : Section La Haie Ferrière - Montoir-de-Bretagne-Est
• 25 07 1967 : Section Sem-Ouest - La Cencie-Est
• 14 03 1968 : Section Montoir-de-Bretagne-Est - Saint-Nazaire-Nord (seconde chaussée)
• 17 08 1970 : Section La Cencie-Ouest - Montoir-de-Bretagne-Est
• 02 03 1973 : Section La Moëre - La Haie-Ferrière (seconde chaussée)
• 02 03 1973 : Section La Haie Ferrière - Sem-Est
• 02 03 1973 : Section Sem-Est - Sem-Ouest (seconde chaussée)
• 30 10 1997 : Diffuseur de Saint-Nazaire-Ouest (réaménagement)
• 24 07 2002 : Échangeur de Certé (D213 (44), réaménagement)

Mises en service

• xx xx 1955 : Section Montoir-de-Bretagne-Est - Saint-Nazaire-Nord (première chaussée)
• xx xx 1956 : Section La Moëre - La Haie Ferrière (première chaussée)
• xx xx 1967 : Section Sem-Est - Sem-Ouest (première chaussée)
• xx xx 1967 : Section La Cencie-Est - La Cencie-Ouest (première chaussée)
• xx xx 1969 : Section Sem-Ouest - La Cencie-Est
• xx xx 1970 : Section Montoir-de-Bretagne-Est - Saint-Nazaire-Nord (seconde chaussée)
• 22 06 1972 : Section La Cencie-Ouest - Montoir-de-Bretagne-Est
• xx 06 1974 : Section La Haie Ferrière - Sem-Est
• xx 06 1974 : Section Sem-Est - Sem-Ouest (seconde chaussée)
• xx xx 1975 : Section La Moëre - La Haie-Ferrière (seconde chaussée)
• xx xx 1975 : Section Saint-Nazaire-Nord - Saint-Nazaire-Nord-Ouest (première chaussée)
• xx xx 1987 : Section Saint-Nazaire-Nord - Saint-Nazaire-Nord-Ouest (seconde chaussée)
• xx xx 1991 : Section La Cencie-Est - La Cencie-Ouest (seconde chaussée)
• xx xx 1991 : Section La Boue - Pont de Nyon (seconde chaussée unidirectionnelle, sens Saint-Nazaire - Savenay)
• xx xx 1991 : Section Cran-Neuf - Brais (seconde chaussée)

Diffuseurs

• xx xx 1981 : Demi-diffuseur de Pont de Nyon (aménagement du carrefour à niveau existant, demi-diffuseur orienté vers Saint-Nazaire)
• xx xx 1988 : Demi-diffuseur de La Cordionnais (aménagement du carrefour à niveau existant, demi-diffuseur orienté vers Savenay)
• xx xx 1989 : Échangeur de La Moëre
• xx xx 1991 : Carrefour à niveau de Sem-Est (fermeture)
• xx xx 1996 : Diffuseur de Montoir-de-Bretagne-Ouest (remplace le carrefour à niveau adjacent)
• xx xx 1996 : Carrefour à niveau de Montoir-de-Bretagne-Route de la Torse (fermeture)
• xx xx 2002 : Diffuseur de Saint-Nazaire-Ouest (réaménagement)
• 24 07 2003 : Échangeur de La Moëre (RN165), (réaménagement, première phase)
• 14 05 2004 : Échangeur de La Moëre (RN165), (réaménagement, seconde phase)
• xx 07 2007 : Échangeur de Certé (D213 (44), réaménagement), (partie Sud, giratoire de Grand Large)
• xx xx 2009 : Quart-diffuseur de Montoir-de-Bretagne-Est (fermeture, quart-diffuseur orienté vers Saint-Nazaire)
• xx xx 2011 : Carrefour à niveau de Beau Soleil (fermeture)
• 15 12 2011 : Échangeur de Certé (D213 (44), réaménagement), (partie Nord, allongement de la bretelle d'évitement bretelle Savenay - La Baule)
• xx xx 2017 : Carrefour à niveau de Montoir-de-Bretagne-Rue de la Croix Chevalier (fermeture)

Itinéraire

La D213 (44) (ex-RN171) à Saint-Nazaire en direction de Nantes.
© France Autoroutes.

• De Savenay à Saint-Nazaire ; section gratuite non-concédée, ayant le statut de voie rapide, gérée par la DIR Ouest.
  •  N165 E60
  •   Échangeur entre RN165 et RN171 (demi-échangeur)
  •  N171
  •   N171  (La Moëre) N171 : Villes desservies : Laval, Châteaubriant, Blain (demi-échangeur)
  •   D4  (Savenay) D4 (44) : Villes desservies : Entrée sur la voie express en direction de Saint-Nazaire uniquement. (quart-échangeur)
  •   D17  (La Chapelle-Launay) D17 (44) : Villes desservies : Lavau-sur-Loire, La Chapelle-Launay, Savenay (trois-quarts-échangeur)
  •   D100  (Prinquiau) D100 (44) : Villes desservies : Donges, Prinquiau (trois-quarts-échangeur)
  •   D771  (Prinquiau) D771 (44) : Villes desservies : Donges, Prinquiau (demi-échangeur)
  •   D4  (Donges) D4 (44) : Villes desservies : Rennes, Lorient, Vannes, Pont-Château, Besné, Donges, Ports de Donges, Montoir et Saint-Nazaire
  •  N171
  •   VC  (Pont de Nyon) : Villes desservies : Pont de Nyon (demi-échangeur)
  •   VC  (Pont de Nyon) : Villes desservies : Pont de Nyon (demi-échangeur)
  •   VC  (La Cordionnais) : Villes desservies : La Cordionnais (demi-échangeur)
  •   VC  (Montoir-de-Bretagne-Est) : Villes desservies : Montoir-de-Bretagne,  Z.I. des Noés
  •   D971  (Montoir-de-Bretagne-Ouest) D971 (44) : Villes desservies : Montoir-de-Bretagne, Ports de Montoir et Saint-Nazaire, Parc de la Brière
    •  Vitesse : 90 km/h  (sens Savenay > Saint-Nazaire)
  •   VC  (Trignac-Rue Francisco Ferrer) : Villes desservies : Trignac (quart-échangeur)
  •   VC  (Trignac) : Villes desservies : Trignac
    •  Aire de service  (Saint-Nazaire > Savenay)
  •   Échangeur entre D213 (44) et RN171  : La Baule | Guérande | Saint-Nazaire-ouest
  •   (Saint-Nazaire-Nord / Giratoire de Grand Large) : D213 (44) La Rochelle, La Roche-sur-Yon, Noirmoutier, Saint-Brévin-les-Pins, Ports de Donges, Montoir et Saint-Nazaire, Méan Penhoët VC Saint-Nazaire-centre, Centre commercial

Sites Sara

• La RN171 dans Saratlas
• Photos de la RN171 sur France Autoroutes
• Panneaux directionnels de la RN171
• Fil du Forum Sara sur la RN171