L'Axe Anjou - Poitou (nom totalement officieux) désigne un ensemble d'itinéraires, formé de quatre branches permettant de relier Angers et Saumur (au nord) à Niort et Poitiers (au sud). La jonction entre les quatre branches est située à Montreuil-Bellay (49).
Ces quatre branches permettent de former quatre grands itinéraires (en panneaux verts) : Angers - Niort, Angers - Poitiers, Saumur - Niort et Saumur - Poitiers. On constate ainsi une certaine symétrie dans la signalisation : sur les branches Angers et Saumur, la double signalisation Niort/Poitiers, et sur les branches Niort et Poitiers, la double signalisation Angers/Saumur.
Depuis 2006, les tronçons sont exclusivement formés de routes départementales, sauf un court tronc commun avec la RCEA (RN149) au niveau de Parthenay.
Depuis les années 1980, les branches Angers, Saumur et Niort ont fait l'objet d'importants investissements (mise à 2x2 ou 2+1 voies, selon les tronçons). La branche Poitiers n'a pratiquement pas été aménagée, bien qu'elle ait été conservée dans le réseau national jusqu'en 2005 (RN147).
Pour les autres grands axes départementaux situés dans le Maine-et-Loire :
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class=\"mw-parser-output\"\u003E\u003Cp\u003EFin de la Branche Poitiers (RN149)\n\u003C/p\u003E\u003C/div\u003E","title":"Fin de la Branche Poitiers (RN149)\n","link":"","lat":46.632176,"lon":0.29221,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EMontreuil-Bellay sud\n\u003C/p\u003E\u003C/div\u003E","title":"Montreuil-Bellay sud\n","link":"","lat":47.121496,"lon":-0.159934,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EMontreuil-Bellay nord\n\u003C/p\u003E\u003C/div\u003E","title":"Montreuil-Bellay nord\n","link":"","lat":47.139613,"lon":-0.159001,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EFin de la Branche Angers (A87)\n\u003C/p\u003E\u003C/div\u003E","title":"Fin de la Branche Angers (A87)\n","link":"","lat":47.402051,"lon":-0.511443,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EFin de la branche Saumur (A85)\n\u003C/p\u003E\u003C/div\u003E","title":"Fin de la branche Saumur (A85)\n","link":"","lat":47.308458,"lon":-0.030813,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EFin de la branche Niort (\u00c9chir\u00e9)\n\u003C/p\u003E\u003C/div\u003E","title":"Fin de la branche Niort (\u00c9chir\u00e9)\n","link":"","lat":46.361854,"lon":-0.431706,"icon":""}]}
Pour plus d'informations sur les sources cartographiques, consulter cet article.
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Intérêts[]
Ces itinéraires ont pour fonction primordiale, au plans régional et interrégional, de relier Angers (et dans une moindre mesure, Saumur et Le Mans) aux régions du sud-ouest (Bordeaux via l'A10 à Niort) et du centre-sud (Toulouse et Limoges via la RCEA Poitiers-Limoges et l'A20).
Plus localement, l'aménagement des branches Angers, Saumur et Niort permet le désenclavement du sud-est du Maine-et-Loire (Doué-la-Fontaine, Montreuil-Bellay) et du nord des Deux-Sèvres (Thouars).
Description des quatre branches[]
Branche Angers[]
Section Montreuil-Bellay - Doué-la-Fontaine, non aménagée, à 2x1 voies, aucun projet sérieux d'aménagement prévu
Étude de tracé pour la création d'axes autoroutiers en 1973[]
Angers-Poitiers[]
Chargement de la carte...
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class=\"mw-parser-output\"\u003E\u003Cp\u003EA10 (projet de trac\u00e9 de 1973)\n\u003C/p\u003E\u003C/div\u003E","title":"A10 (projet de trac\u00e9 de 1973)\n","link":"","lat":46.580926,"lon":0.292274,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EA11\n\u003C/p\u003E\u003C/div\u003E","title":"A11\n","link":"","lat":47.502383,"lon":-0.502731,"icon":""}]}
Légende de la carte ou du tableau
En bleu
Tracé du projet d'autoroute entre Angers et Poitiers en février 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.
Angers-Cholet-Niort[]
Chargement de la carte...
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Légende de la carte ou du tableau
En bleu
Tracé du projet d'autoroute entre Angers, Cholet et Niort en février 1973.
En rouge
Autres projets auxquels devait se raccorder l'autoroute.
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.
Angers-Bressuire-Niort[]
Chargement de la carte...
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class=\"mw-parser-output\"\u003E\u003Cp\u003EA10 (projet de trac\u00e9 de 1973)\n\u003C/p\u003E\u003C/div\u003E","title":"A10 (projet de trac\u00e9 de 1973)\n","link":"","lat":46.311528,"lon":-0.421257,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EA11 (projet de trac\u00e9 de 1973)\n\u003C/p\u003E\u003C/div\u003E","title":"A11 (projet de trac\u00e9 de 1973)\n","link":"","lat":47.502284,"lon":-0.502753,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EA11 (projet de trac\u00e9 de 1973)\n\u003C/p\u003E\u003C/div\u003E","title":"A11 (projet de trac\u00e9 de 1973)\n","link":"","lat":47.509889,"lon":-0.426084,"icon":""}]}
Légende de la carte ou du tableau
En bleu
Tracé du projet d'autoroute entre Angers, Bressuire et Niort en février 1973.
En bleu clair
Variante du tracé du projet d'autoroute entre Angers, Bressuire et Niort en février 1973.
En rouge
Tracé projeté pour l'A11 en février 1973.
En orange
Tracé projeté pour l'A10 en février 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.
Concurrence des autoroutes[]
L'importance régionale de ces axes a été amoindrie par la mise en service successive des autoroutes dans le secteur, leur conférant une vocation plus locale :
Le Mans - Saumur - Bordeaux : L'ouverture des autoroutes A85 (Angers-Saumur) et A28 (Le Mans-Tours) a sensiblement réduit l'importance de l'itinéraire Le Mans - La Flèche - Saumur - Thouars - Niort via les N23 et D938, qui auparavant constituait l'itinéraire le plus direct pour effectuer le trajet Le Mans-Bordeaux.
Angers - Niort - Bordeaux : De même, l'ouverture des autoroutes A83 et A87 en 2003 a constitué un deuxième itinéraire pour faire Angers-Niort. Cependant, l'itinéraire par ces autoroutes occasionne un détour conséquent (60 km) et payant par rapport à l'itinéraire via Thouars, qui de surcroît est très rectiligne et a été progressivement aménagé à 3 ou 2x2 voies : l'itinéraire "départemental" reste donc privilégié par beaucoup d'uagers pour effectuer le trajet Angers - Bordeaux (les deux sont quasi-équivalents en temps)
Angers - Poitiers - Limoges : cet itinéraire n'est pas doublé par une autoroute, mais on peut imaginer que depuis l'ouverture complète de l'A85 fin 2007, beaucoup de ligériens se rendant à l'est ou au sud-est de Limoges préfèreront passer par Vierzon et Clermont-Ferrand (A85, A71, A75) plutôt que par Poitiers et Limoges.
Futur[]
Branche Angers[]
Elle est progressivement mise à 2x2 voies entre la Rocade d'Angers et Doué-la-Fontaine. Certains carrefours restent à déniveler.
Branche Niort[]
Aucun chantier n'est à signaler.
Branche Saumur[]
Aucun chantier n'est à signaler.
Branche Poitiers[]
De rares créneaux de dépassement ont été étudiés alors que les carrefours giratoires se multiplient sur cette section au détriment de la fluidité et de la sécurité.
Voir l'article : D960 (49) (Axe Cholet - Saumur).
