Autoroute française A84

Pour les articles homonymes, voir Autoroute A84 (Homonymie). 

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Autoroute A84
Autoroute A84 au niveau de la sortie 33, près de Ducey.© France Autoroutes
Localisation
Pays	France
Régions	Bretagne Normandie
Exploitation
Gestionnaires	DIR Ouest DIR Nord-Ouest
Caractéristiques
Itinéraire	N136 - N175 (Cesson-Sévigné - Poilley) N175 - N814 (Ponts - Bretteville-sur-Odon)
Longueur	156 km
Historique
Première ouverture	1998
Dernière ouverture	2003

Présentation

• L'autoroute A84, ou A84, est une autoroute française reliant Rennes à Caen.
• Elle remplace sur une partie de son parcours la RN175. Elle fait partie de l'Autoroute des Estuaires.
• Cette autoroute est entièrement gratuite et est gérée par les DIR Ouest en Bretagne et Nord-Ouest en Normandie.
• Dans le contournement d'Avranches, elle devient une voie express (RN175). Un contournement autoroutier à l'Est d'Avranches était prévu mais a été abandonné.
• Elle devait être à terme prolongée jusqu'à Nantes par la mise aux normes autoroutières de la RN137 au sud de Rennes, mais le projet ne semble plus d'actualité. De même, un grand contournement Sud-Est de Rennes a été envisagé mais est aujourd'hui abandonné.

Localisation

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003ED\u00e9but de l'A84 sur le \u003Ca href=\"/wiki/Boulevard_P%C3%A9riph%C3%A9rique_de_Caen\" title=\"Boulevard P\u00e9riph\u00e9rique de Caen\"\u003EBoulevard P\u00e9riph\u00e9rique de Caen\u003C/a\u003E \u00e0 Bretteville-sur-Odon.\n\u003C/p\u003E\u003C/div\u003E","title":"D\u00e9but de l'A84 sur le Boulevard P\u00e9riph\u00e9rique de Caen \u00e0 Bretteville-sur-Odon.\n","link":"","lat":49.163799,"lon":-0.426209,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EFin de l'A84 sur le \u003Ca href=\"/wiki/Boulevard_P%C3%A9riph%C3%A9rique_de_Rennes\" title=\"Boulevard P\u00e9riph\u00e9rique de Rennes\"\u003EBoulevard P\u00e9riph\u00e9rique de Rennes\u003C/a\u003E \u00e0 Cesson-S\u00e9vign\u00e9.\n\u003C/p\u003E\u003C/div\u003E","title":"Fin de l'A84 sur le Boulevard P\u00e9riph\u00e9rique de Rennes \u00e0 Cesson-S\u00e9vign\u00e9.\n","link":"","lat":48.148581,"lon":-1.61252,"icon":""}]}

Légende de la carte ou du tableau
En bleu	Tracé actuel.
En rouge	Tracé de la voie express RN175 assurant la continuité des deux sections de l'A84.
En gris clair	Projet d'autoroute abandonné à l'Est d'Avranches.
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.

Description du tracé

Début de l'A84 (sortie 16 de la RN 136). © Google Maps

• L'autoroute commence à Caen sur un hybride échangeur-rond-point lui permettant de se relier avec le Boulevard Périphérique de Caen (N814) et une avenue de Caen (Bretteville-sur-Odon), la D675 : cet échangeur est d'une efficacité toute relative à la destination choisie et sa provenance. Elle traverse ensuite la banlieue de Caen et ses zones d'activités puis parcourt la Normandie selon un tracé sinueux mais desservant les villes de Villers-Bocage, Pont-Farcy, Villedieu-les-Poêles, Avranches et Saint-James.
• L'A84 poursuit sa route en Ille-et-Vilaine, desservant Fougères, Saint-Aubin-du-Cormier, Liffré et Thorigné-Fouillard, avant de déboucher sur le Boulevard Périphérique de Rennes (N136) par un échangeur complet en T.
• A détailler

Autour de l'autoroute

Sortie 38 en direction de Caen © France Autoroutes

L'A84 vers Caen. © autorout.free.fr

Régions

• Bretagne
• Normandie

Départements

• Ille-et-Vilaine (35)
• Manche (50)
• Calvados (14)

Métropole

• Rennes Métropole

Sites naturels

• La Baie du Mont Saint-Michel
• La Suisse Normande
• La Haute Bretagne

Panneaux touristiques

Cette liste recense tous les panneaux d'informations touristiques (de couleur brune) situés au bord des autoroutes.

A venir

Autres sites touristiques

Liste des sites non répertoriés sur les panneaux touristiques mais d'intérêt notable.

• Mont Saint-Michel
• Débarquement des Alliés en Normandie (6 juin 1944) :
  • Plages du Débarquement (Omaha Beach, Utah Beach...)
  • Mémorial de Caen
  • Musées de Bayeux et d'Arromanches-les-Bains
  • Ouistreham
  • Pointe du Hoc
  • Cimetière militaire (U.S.A.) de Colleville-sur-Mer
  • Etc...
• A compléter...

Historique

Voir l'article : Autoroute française A84 (Historique).

Futur

• Deux projets d'amélioration de l'axe Nantes - Rennes - Caen ont été proposés et abandonnés :
  • Contournement Est d'Avranches.
  • Contournement Sud-Est de Rennes.

Voir l'article : Autoroute française A84 (Ancien numéro).

• Un projet existe toujours officiellement, mais ne semble plus d'actualité :
  • Incorporation de la RN137 à l'A84 par mise aux normes autoroutières entre Rennes et Nantes.

Voir l'article : Autoroute française A84 (Projet).

Itinéraire

Voir l'article : Autoroute française A84 (Itinéraire).

Aires

Voir l'article : Autoroute française A84 (Aires).

Diaporama

Entre la   34  et la   30 

• Toutes les photos : © Atlasroutier

1/8

Ouvrages remarquables

• Tranchée couverte ??? (au nord de Thorigné-Fouillard)
• Pont sur la Sélune (N175)
• Viaduc du Saultbesnon
• Pont sur la Sienne
• Pont sur la Vire

Voir aussi

Sites SARA

•  [Saratlas] L'autoroute A84 sur Saratlas

•  [France Autoroutes] Photos de l'autoroute A84 sur France Autoroutes

•  [Autorout.free.fr] Panneaux directionnels de l'autoroute A84

•  [Forum Sara] Fil du Forum Sara sur le prolongement de l'autoroute A84 entre Rennes et Nantes

Sites externes

•  [DIR Nord-Ouest] Site de la DIR Nord-Ouest

•  [DIR Ouest] Site de la DIR Ouest