Route nationale française 156

Route nationale 156
Poteau Michelin à Contres© Carte postale ancienne
Localisation
Pays	France
Régions	Bretagne, Centre-Val de Loire, Occitanie
Caractéristiques de 1824 à 1973
Itinéraire	Blois - Châteauroux
Longueur	94 km
Caractéristiques de 1978 à 1981
Itinéraire	Traversée d'Alès
Longueur	3 km
Caractéristiques de 19xx à 2006
Itinéraire	Cesson-Sévigné - Rennes
Longueur	6 km

Présentation

• La route nationale 156, ou RN156, est une ancienne route nationale française qui a connu trois affectations bien distinctes.

Historique

Généralités

• A sa création en 1824, elle est définie comme la route de Blois à Châteauroux. Elle joint, aux abords et en avant de Châteauroux, la route n°143 de Clermont à Tours. Elle succède alors à la Route impériale 176.
• Suite à la réforme de 1972, cet itinéraire a été intégralement déclassé en D956 dans les départements traversés.
• En 1978, un nouvel itinéraire est formé qui traverse le centre-ville d'Alès en reprenant une section de l'ancienne RN104. C'est la route d'Alès (Pont de Rochebelle), N. 106, à Alès (Nord), C.D. 904 / C.D. 906.
• Cette route en cul-de-sac et apparemment sans intérêt stratégique a été déclassée dès 1981.
• Plus tard, le numéro a été réattribué à l'ancien tracé terminal de la RN157 entre Cesson-Sévigné et Rennes, lequel a été déclassé à son tour en 2006 dans la voirie des communes concernées.
• Depuis le 1^er janvier 2017, la section située sur le territoire de Rennes Métropole a été reclassée en tant que route métropolitaine.

Construction

• Pont de Blois : 1840 (réparations).
• Déversoir de Saint-Gervais-la-Forêt : 1842 (reconstruction).
• Traversée de Cellettes : 1838 (réparations).
• Traversée de Selles-sur-Cher : 1842 (réparations).
• Pont de La Vernelle : 1840 (réparations).
• Pont de Fontguenand : 1838.
• Rectification et traversée de Valençay : fin des années 1840.

Aménagements

• Déviation de Blois : voir Rocade de Blois.
• Déviation de Cellettes : 16 octobre 2016.
• Déviation de Contres :
  • Section D956-Nord - D102 : 30 novembre 2009.
  • Section D102 - D122 : 17 décembre 2010 (rénovation d'une voie industrielle aménagée en 1984).
  • Section D122 - D956-Sud : 6 septembre 2012.
• Déviation Est de Selles-sur-Cher : 1988.
• Barreau de liaison à l'A20 au Nord de Châteauroux : 1996.

Tracés historiques

Cesson-Sévigné - Rennes (avant 2006)

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":48.11385,"lon":-1.622887,"icon":""},"title":"","label":"","icon":"","lines":[{"text":"","title":"","link":"","strokeColor":"#F30A2B","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.114652,"lon":-1.657176},{"lat":48.114767,"lon":-1.651082},{"lat":48.113964,"lon":-1.647391},{"lat":48.114566,"lon":-1.592288},{"lat":48.115913,"lon":-1.585722},{"lat":48.11597,"lon":-1.582975},{"lat":48.1164,"lon":-1.580572},{"lat":48.116428,"lon":-1.577783},{"lat":48.116858,"lon":-1.575251}]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":12,"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\u003ERennes\n\u003C/p\u003E\u003C/div\u003E","title":"Rennes\n","link":"","lat":48.114652,"lon":-1.657176,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ECesson-S\u00e9vign\u00e9\n\u003C/p\u003E\u003C/div\u003E","title":"Cesson-S\u00e9vign\u00e9\n","link":"","lat":48.116858,"lon":-1.575251,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé avant 2006.
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.

• Ille-et-Vilaine (35) / Rennes Métropole - RM
  •  N136  N157 Cesson-Sévigné
    • Route de Paris
    • Rue de Rennes
  • Rennes
    • Avenue du Général Leclerc M137 M163 M175 M177 M463 M812

Traversée d'Alès (1978 à 1981)

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":44.137254,"lon":4.080048,"icon":""},"title":"","label":"","icon":"","lines":[{"text":"","title":"","link":"","strokeColor":"#F30A2B","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":44.145662,"lon":4.08891},{"lat":44.144014,"lon":4.088695},{"lat":44.139826,"lon":4.088588},{"lat":44.139287,"lon":4.088137},{"lat":44.137162,"lon":4.085004},{"lat":44.136577,"lon":4.084597},{"lat":44.134005,"lon":4.083266},{"lat":44.13265,"lon":4.082258},{"lat":44.13134,"lon":4.080777},{"lat":44.130786,"lon":4.08052},{"lat":44.130262,"lon":4.080541},{"lat":44.12997,"lon":4.080262},{"lat":44.128922,"lon":4.079103},{"lat":44.128152,"lon":4.078867},{"lat":44.127398,"lon":4.078975},{"lat":44.12749,"lon":4.078417},{"lat":44.126812,"lon":4.07361},{"lat":44.124841,"lon":4.072623},{"lat":44.124271,"lon":4.072559}]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":13,"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\u003EAl\u00e8s - N104 / N106\n\u003C/p\u003E\u003C/div\u003E","title":"Al\u00e8s - N104 / N106\n","link":"","lat":44.145662,"lon":4.08891,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EN106 - Pont de Rochebelle\n\u003C/p\u003E\u003C/div\u003E","title":"N106 - Pont de Rochebelle\n","link":"","lat":44.124271,"lon":4.072559,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé entre 1978 et 1981.
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.

• Gard (30) - D904
  • D385 D385^A D904 D906 D916 Alès Cathédrale, Châteaux
  • Pont de Rochebelle N106

Blois - Châteauroux (1824 à 1973)

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":47.256864,"lon":1.653442,"icon":""},"title":"","label":"","icon":"","lines":[{"text":"","title":"","link":"","strokeColor":"#F30A2B","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.586021,"lon":1.33604},{"lat":47.561585,"lon":1.372819},{"lat":47.535718,"lon":1.375394},{"lat":47.531575,"lon":1.378527},{"lat":47.528822,"lon":1.379642},{"lat":47.527199,"lon":1.38093},{"lat":47.525026,"lon":1.38402},{"lat":47.523432,"lon":1.386681},{"lat":47.522475,"lon":1.389942},{"lat":47.520679,"lon":1.393118},{"lat":47.518215,"lon":1.395993},{"lat":47.517027,"lon":1.396894},{"lat":47.513954,"lon":1.401186},{"lat":47.512969,"lon":1.401615},{"lat":47.508389,"lon":1.40316},{"lat":47.503751,"lon":1.40492},{"lat":47.500793,"lon":1.405349},{"lat":47.493516,"lon":1.405478},{"lat":47.488644,"lon":1.407623},{"lat":47.471735,"lon":1.422944},{"lat":47.469675,"lon":1.423888},{"lat":47.468398,"lon":1.424103},{"lat":47.434271,"lon":1.42745},{"lat":47.419667,"lon":1.42848},{"lat":47.417722,"lon":1.428223},{"lat":47.416241,"lon":1.431999},{"lat":47.409619,"lon":1.440926},{"lat":47.398785,"lon":1.455603},{"lat":47.393004,"lon":1.463242},{"lat":47.382515,"lon":1.471524},{"lat":47.361705,"lon":1.475816},{"lat":47.358798,"lon":1.474614},{"lat":47.357723,"lon":1.4744},{"lat":47.356763,"lon":1.474485},{"lat":47.355629,"lon":1.475129},{"lat":47.353885,"lon":1.476674},{"lat":47.352838,"lon":1.478262},{"lat":47.351821,"lon":1.478949},{"lat":47.350193,"lon":1.479635},{"lat":47.348244,"lon":1.478863},{"lat":47.345482,"lon":1.478648},{"lat":47.342778,"lon":1.479678},{"lat":47.339899,"lon":1.481824},{"lat":47.328847,"lon":1.490235},{"lat":47.301905,"lon":1.510363},{"lat":47.289447,"lon":1.531262},{"lat":47.283945,"lon":1.540661},{"lat":47.283247,"lon":1.542377},{"lat":47.282053,"lon":1.542892},{"lat":47.281616,"lon":1.544394},{"lat":47.277686,"lon":1.550703},{"lat":47.27492,"lon":1.552463},{"lat":47.273842,"lon":1.552892},{"lat":47.27361,"lon":1.555982},{"lat":47.268485,"lon":1.55448},{"lat":47.25867,"lon":1.547484},{"lat":47.25066,"lon":1.542978},{"lat":47.248271,"lon":1.542377},{"lat":47.242619,"lon":1.542377},{"lat":47.236908,"lon":1.541348},{"lat":47.219189,"lon":1.537228},{"lat":47.217236,"lon":1.538601},{"lat":47.194204,"lon":1.538815},{"lat":47.159782,"lon":1.561904},{"lat":47.160044,"lon":1.562591},{"lat":47.159344,"lon":1.563191},{"lat":47.159431,"lon":1.564693},{"lat":47.158965,"lon":1.564779},{"lat":47.158527,"lon":1.563835},{"lat":47.157301,"lon":1.564736},{"lat":47.156543,"lon":1.563492},{"lat":47.137074,"lon":1.577482},{"lat":47.135994,"lon":1.577954},{"lat":47.081579,"lon":1.584134},{"lat":47.080176,"lon":1.584778},{"lat":47.055037,"lon":1.605506},{"lat":47.053604,"lon":1.606321},{"lat":47.05185,"lon":1.606536},{"lat":47.016605,"lon":1.608424},{"lat":47.013006,"lon":1.608338},{"lat":46.989123,"lon":1.607008},{"lat":46.986576,"lon":1.606922},{"lat":46.985493,"lon":1.607308},{"lat":46.984878,"lon":1.60851},{"lat":46.984176,"lon":1.61087},{"lat":46.980252,"lon":1.611986},{"lat":46.979345,"lon":1.613188},{"lat":46.978144,"lon":1.613445},{"lat":46.974338,"lon":1.613402},{"lat":46.971029,"lon":1.61499},{"lat":46.902548,"lon":1.646447},{"lat":46.81924,"lon":1.684599},{"lat":46.81692,"lon":1.684599}]}],"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\u003EBlois\n\u003C/p\u003E\u003C/div\u003E","title":"Blois\n","link":"","lat":47.586021,"lon":1.33604,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ECh\u00e2teauroux\n\u003C/p\u003E\u003C/div\u003E","title":"Ch\u00e2teauroux\n","link":"","lat":46.81692,"lon":1.684599,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé avant 1973.
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.

• Loir-et-Cher (41) - D956
  • D751 D766 D924 D952 D956 D957 D2152 Blois Château, Nombreux Monuments
  • Saint-Gervais-la-Forêt D33
  •  Forêt de Russy
  • La Patte-d'Oie D923 D765
  • Château de Beauregard
  • Cellettes Le Beuvron
  • Cormeray
  • D52
  • Contres Église XVI^e, Châteaux D30 D102 D122 D675
  • La Rouchère
  • Marchigny
  • Chémery Château D63
  •  A85   13 
  • Les Mangerons
  • La Sauldre
  • Selles-sur-Cher Ancien Canal du Berry / Le Cher Château, Abbatiale (Tombeau Mérovingien de Saint-Eusice) D51 D119 D176^A D976
  • D17
• Indre (36) - D956
  • La Vernelle Le Fouzon
  • Fontguenand
  • Valençay Le Nahon Château et Tombeau de Talleyrand D4 D15 D37 D960
  • D37
  • La Verrerie D34
  • Levroux La Céphons Château, Collégiale XIII^e D8 D926
  • La Trégonce
  • D27
  • Le Petit-Souper
  • D7
  • Cité de Brassioux D64
  • Châteauroux Château-Raoul, Couvent des Cordeliers N151 D40 D920 D925 D943 D990