Route nationale française 23

Route nationale 23
Borne Michelin sur la RN23.© Brice Daviaud
Localisation
Pays	France
Régions	Centre-Val de Loire, Normandie, Pays de la Loire
Caractéristiques de 1824 à 1973
Itinéraire	Chartres - Le Mans - Angers - Nantes - Paimboeuf
Longueur	326 km
Caractéristiques de 1973 à 2006
Itinéraire	Chartres - Le Mans - Angers - Nantes
Longueur	278 km
Caractéristiques de 2006 à 2007
Itinéraire	Traversée d'Angers
Longueur	10 km

Présentation

• La route nationale 23, ou RN23, est une ancienne route nationale française qui a connu plusieurs affectations au gré des déclassements et reclassements dans le réseau routier national.

Historique

Généralités

• A sa création, en 1824, elle est définie comme étant la route de Paris à Nantes et à Paimboeuf. Elle s'embranche à Chartres sur la route N°10 de Paris à Bayonne. Elle succède alors à la route impériale 26.
• En 1933, elle comprenait une antenne, la N23^A. Une autre antenne, la N23^B, sera créée plus tard après les importants travaux de déviation de l'aérodrome de Château-Bougon (actuel aéroport de Nantes-Atlantique).
• Avant la réforme de 1972, la RN23 reliait donc Chartres à Paimboeuf via Le Mans, Angers et Nantes. A cette date, la section de Nantes à Paimboeuf a été déclassée.
• Elle devient alors en 1978 la route de Chartres, N. 154, à Nantes, N. 137.
• Entre 1978 et 1983 est créée la RN1023 dans l'Eure-et-Loir (28), permettant de contourner Nogent-le-Rotrou sur l'itinéraire Chartres - Le Mans.
• Suite à la réforme de 2005, la RN23 disparaît par étapes. Le dernier tronçon déclassé en juin 2007 est la traversée d'Angers, conservée à titre provisoire en prévision de l'ouverture de l'Autoroute française A11 (Contournement Nord d'Angers) qui décharge désormais la voie sur berges du centre-ville. Ce tronçon a été déclassé en D323 (49), et fait partie intégrante de la Rocade d'Angers.

Aménagements

• Aménagement à 3 voies entre Champrond-en-Gâtine et Montlandon : Décembre 1973.
• Déviation d'Ancenis : 1978 entre la D723-Est et le Boulevard Pierre et Marie Curie, 1979 entre le Boulevard Pierre et Marie Curie et le Boulevard Jules Verne, 1980 entre le Boulevard Jules Verne et la D923, 24 juin 2011 entre la D923 et la D164, et 9 novembre 2007 entre la D164 et la D723-Ouest.
• Déviation d'Oudon : 4 avril 1969.

Tracés historiques

Chargement de la carte...

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Légende de la carte ou du tableau
En rouge	Tracé déclassé en 2006.
En orange	Sections déclassées localement après déviation.
En jaune	Tracé déclassé en 1973.
En vert	Tracé délaissé suite à l'ouverture de l'aéroport de Nantes.
En vert clair	Ancien tracé à Angers avant 1957.
En blanc	Ancien tracé à Angers avant 1928.
Pour plus d'informations sur les sources cartographiques, consulter cet article.
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De Chartres au Mans (avant 2006)

Borne symbolisant la Voie de la Liberté, présente sur l'ancien tracé de la RN23 au Mans. © Sylvain 59

La D314 (ex-RN23) à l'entrée du Mans en venant de Paris. © Sylvain 59

• Eure-et-Loir (28) - D7023
  • N154 D910 D921 D935 D939 D7010 D7154 Chartres Cathédrale, Centre Ancien, etc.
  • Lucé N123 N1154 (Rocade de Chartres)
• Eure-et-Loir (28) - D923
  • Courville-sur-Eure L'Eure Église Saint-Pierre, Hôpital D920
  • Chuisnes La Butte
  • Les Châtelets
  • Le Frou (Anc^t Glatigny)
  • Champrond-en-Gâtine D941
  • Montlandon Tour
  • La Hurie
• Orne (61) - D923
  • La Fourche D928
  • L'Ambulance
• Eure-et-Loir (28) - D923
  • Margon La Cloche D918 D923
  • Nogent-le-Rotrou L'Huisne Château Saint-Jean, Hôtel-Dieu, Abbaye Saint-Denis D922 D923 D955
  •  
• Orne (61) - D923
  • Le Gibet
  • Châteauroux
  • Z.I. Mâle
  • La Malbroue
  •  
• Sarthe (72) - D323
  • Avezé
  • La Ferté-Bernard Église Notre-Dame-des-Marais, Porte Saint-Julien, Centre Ancien, etc. D1 D2 D7 D36 D273
  • D316
  • Le Buron
  • Sceaux-sur-Huisne
  • Vouvray-sur-Huisne Dolmen des Roches
  • La Paillasse
  • Le Coudray
  • Duneau
  • Connerré Le Dué D33 D302
  • La Belle-Inutile D20
  • Saint-Mars-la-Brière
  • Champagné D323 D357 -  A28   23 
• Sarthe (72) - D314
  • Yvré-l'Évêque D20^Bis
  • Béner D313 (Rocade du Mans)
• Sarthe (72) - VC (anciennement D314)
  • Abbaye de l'Epau
  • Le Mans Cathédrale, Thermes de Vindunum, Centre Ancien, etc. D300 D301 D304 D309 D338 D357 VC

Du Mans à Angers (avant 2006)

• Sarthe (72) - VC (anciennement D315)
  • Le Mans Cathédrale, Thermes de Vindunum, Centre Ancien, etc. D300 D301 D304 D309 D338 D357 VC
  • Pontlieue  D323 (Rocade du Mans)
• Sarthe (72) - D323
  •     Arnage-centre
• Sarthe (72) - VC
  • Arnage Musée Automobile, Circuit du Mans D307

Le boulevard périphérique sud du Mans (D323) en direction de Paris. © Google Maps

• Sarthe (72) - D147^S
  • La Belle-Étoile   D323
• Sarthe (72) - D323
  • Guécélard
  • Cérans-Foulletourte Le Fessard
  • La Vézanne
  • Le Réveil-Matin
  • Le Chêne Vert (La Fontaine St Martin) D8 D32
  • La Belle-Entreprise
  • Le Point-du-Jour
  • Château-Sénéchal
  • Clermont-Créans D13
  • La Transonnière
  • La Flèche Prytanée National Militaire, Château des Carmes, etc. D12 D306 D308
  • Bazouges-sur-le-Loir  
• Maine-et-Loire (49) - D323
  • Durtal Le Loir Châteaux  A11   11  - D18 D59 D859
  • Le Gué Angevin
  • Lézigné
  • La Chapelle-Saint-Laud-Bourgneuf
  • Seiches-sur-le-Loir Châteaux D74 D766
  • Corzé La Maison-Neuve
  • Les Noirettes
  • Verrières-en-Anjou
    • Pellouailles-les-Vignes  A11   13  (trois-quart-échangeur)
    • Saint-Sylvain-d'Anjou  A11     (quart-échangeur) - D117
    • Parc des expositions  A87   15 
  • Angers La Maine Nombreux Monuments D160 D347 D775 D952 VC

D'Angers à Nantes (avant 2006)

• Maine-et-Loire (49) - D323
  • Angers La Maine Nombreux Monuments D160 D347 D775 D952 VC
  •  D323 (voie sur berges)
  • Beaucouzé D102^E D323
• Maine-et-Loire (49) - D523
  • D723
  •  D523
• Maine-et-Loire (49) - D723
  • Saint-Jean-de-Linières D106 D963
  • Saint-Martin-du-Fouilloux
  • Le Point-du-Jour
  • Château de Serrant
  • Saint-Georges-sur-Loire D961
  • La Janière
  • Saint-Germain-des-Prés D15

    

    Ancien panneau de la RN23 à la sortie de Nantes. Il faut lire : Angers 85 - Paris 391.
    © Brice Daviaud

    

    Bretelles d'accès à la RN23 à Carquefou.
    © Google Maps

  • Champtocé-sur-Loire Château D15
  • Tournebride D51
  • La Riottière D6
• Loire-Atlantique (44) - D723
  • La Fresnaye
  • Poitrière
  • Loireauxence
    • Varades D10 D18 D752
  • D18
  • Vair-sur-Loire
    • Anetz
    • Le Jarier-d'Ancenis  
    • La Motte
  • Ancenis Château D14 D164 D763 D923
  • Saint-Géréon
  • Blanche-Lande  
  • Oudon La Hâvre Tour   D323 D751^C
  • La Maladrie D21
  • La Barre-Peinte
  • La Robinière
  • La Maison-Blanche
  • Mauves-sur-Loire D31
  • Le Chemin-Nantais
  • La Belle-Etoile D37
  • Sainte-Luce-sur-Loire  A811   23 
  • Carquefou
  •  N844   41 
  • Nantes La Loire / L'Erdre Nombreux Monuments N137 N165 D149 (ex-N148^Bis) D178 D751 D823

De Nantes à Paimboeuf (avant 1973)

• Loire-Atlantique (44) - D723
  • Nantes La Loire / L'Erdre Nombreux Monuments D59 N137 N165 D149 (ex-N148^Bis) D178 D751
  • Rezé D58 D823
  • Bouguenais  N844   52  D58 D751^A
  • La Montagne D64 D751
  • D11
  • D80
  • Messan L'Acheneau D58
  • Vue
  • L'Oisilière D58
  • D78
  • La Cannelais D86
  • Paimboeuf D77

Voie express

Contournement du Mans

• Sarthe (72) - D323
  •  D323
  •      A28 -   23  Vers Tours, Alençon, Laval, Rennes, Chartres et Paris, D314 Vers Le Mans-centre, D357 Vers Saint-Calais et Orléans
  •     D20^Bis Yvré-l'Evêque, Bonnétable (demi-échangeur)
  •     Changé, Abbaye de l'Epau
  •     D304 Le Mans, Parigné-l'Evêque, Le Grand-Lucé
  •     D338 Le Mans, Circuit des 24 Heures du Mans, Ecommoy, Tours
  •     Aéroport du Mans, Circuit des 24 Heures du Mans
  •     Arnage (demi-échangeur)
  •     D307 Le Mans, Arnage, Pontvallain, Saumur
  •     D326 Vers A11 -   9 , Allones
  •  D323
  •   Vers Arnage, Guécélard, La Flèche, Angers

Traversée d'Angers

La RN23 à Angers. © France Autoroutes

La RN23 près du chateau d'Angers. © France Autoroutes

• Maine-et-Loire (49) - D323 (ex-N23) Rocade d'Angers
  •  A11 E60
  •  D323
  •   Échangeur entre A11 et D323 Vers Saumur, Le Mans et Paris
  •     Angers, Nozay
  •     Angers, C.H.U.
  •     Angers, Centre historique (demi-échangeur)
  •     D952 Angers, Centre historique
  •     Angers, Rocade Sud
  •     Angers, Beaucouzé
  •     Beaucouzé
  •     Beaucouzé (quart-échangeur)
  •     D106 Beaucouzé, Avrillé
• Maine-et-Loire (49) - D523
  •     Saint-Jean-de-Linières (demi-échangeur)
  •     D963 Bécon-les-Granits, Candé
  •   Échangeur entre A11 et D323 Vers Ancenis et Rennes
  •  D323
  •  A11 E60

Axe Nantes - Paimboeuf

• Loire-Atlantique (44) - D723
  •   Rezé, Ile de Nantes
  •  D723
  •     Rezé, Trentemoult
  •  D723
  •   D58 Les Couëts, Trentemoult
  •   Les Couëts, Z.A. de Cheviré
  •  D723
  •   Échangeur entre RN844 et D723 -   52  Boulevard Périphérique de Nantes
  •     D58 Bouguenais
  •     D751^A Château-Bougon
  •     Bouguenais
  •      D751 Bouaye, Pornic (demi-échangeur)
  •     La Montagne
  •     D64 La Montagne, Indre, Brains
  •     D11 Brains, Saint-Jean-de-Boiseau
  •     D80 Le Pellerin
  •  D723
  •   Cheix-en-Retz
  • Voie express en projet jusqu'à Vue et Paimboeuf

Pictogrammes utilisés dans la description
	Sortie d'une voie non autoroutière.		Rocade / Périphérique.
	Sortie d'une autoroute ou voie express à péage en service.		Pont.
	Sortie d'une autoroute ou voie express gratuite en service.		Tunnel.
	Sortie en construction.		Aire de repos.
	Sortie fermée.		Aire de service.
	Échangeur entre 2 voies non autoroutières ou non express.		Radar automatique.
	Échangeur entre 2 autoroutes ou voies express à péage en service.		Gare.
	Échangeur entre 2 autoroutes ou voies express gratuites en service.		Aéroport.
	Échangeur entre une autoroute (ou voie express) à péage en service et une autoroute (ou voie express) gratuite en service.		Col.
	Échangeur entre une autoroute (ou voie express) à péage en service et une autoroute (ou voie express) en construction.		Vitesse maximale autorisée.
	Échangeur entre une autoroute (ou voie express) gratuite et une autoroute (ou voie express) en construction.		Pente dangereuse.
	Début d'une autoroute.		Route à double sens.
	Fin d'une autoroute.		Feux tricolores.
	Début d'une voie express.		Carrefour giratoire.
	Fin d'une voie express.		Route prioritaire.
	Créneau de dépassement à 2x2 voies hors voie express.		Route prioritaire ponctuellement.
	Créneau de dépassement à 3 voies.		Limites de départements et/ou de régions.

Sites Sara

•  [Saratlas] La D723 (44) à Nantes sur Saratlas

•  [Saratlas] La D323 (72) au Mans sur Saratlas

•  [France Autoroutes] Photos de l'ex-RN23 à Angers sur France Autoroutes

•  [France Autoroutes] Photos de la D723 (44) à Nantes sur France Autoroutes