Route nationale française 773

Route nationale 773
Flèche Michelin sur la RN773© François Malard
Localisation
Pays	France
Régions	Bretagne, Pays de la Loire
Caractéristiques de 1933 à 1973
Itinéraire	Gaël - Donges
Longueur	91 km

Présentation

• La route nationale 773, ou RN773, est une ancienne route nationale française qui reliait Gaël à Donges.
• Elle faisait un tronc commun de 9 km avec la RN164 autour de Redon et trois troncs communs plus courts avec les RN24, RN772 et RN165.

Historique

Généralités

• À sa création en 1933, elle est décrite comme la route de Saint-Méen à Saint-Nazaire par Redon.
• Le trajet de Saint-Méen à Gaël se faisait alors via la N166. De Donges à Saint-Nazaire on empruntait la N771.
• En Ille-et-Vilaine, elle est issue du chemin de grande communication n° 58, ou Gc58 (35), pour la section Nord comprise entre Gaël et la RN24 au Pont du Secret, commune de Painpont, et du chemin de grande communication n° 60, ou Gc60 (35), pour la section Sud comprise entre la limite du Morbihan et la RN164 à Redon. Dans le Morbihan, elle est issue du chemin de grande communication n° 9, ou Gc9 (56). Dans la Loire-Inférieure, elle est issue du chemin de grande communication n° 10 bis, ou Gc10^Bis (44), pour la section comprise entre la RN164 à la sortie de Redon et le lieu-dit Bonne-Miette à Sévérac, et du chemin de grande communication n° 17 bis, ou Gc17^Bis (44), pour la section comprise entre Bonne-Miette et la RN771 au lieu-dit La Chaussée de Nyon à Donges.
• En 1973, elle a été déclassée en D773 dans l'Ille-et-Vilaine (35), le Morbihan (56) et la Loire-Atlantique (44), à l'exception du tronçon situé autour de Redon en Ille-et-Vilaine (35), déclassé en D873 pour le distinguer du tronçon Nord entre Gaël et Paimpont.

Aménagements

• Déviation de Guer : 1981 au Nord-Ouest, 1974 à l'Ouest et 1975 au Sud-Ouest.
• Rectification et recalibrage entre La Bréhauderie et Le Marchix : 1983.
• Déviation de Carentoir : 12 décembre 2005.
• Rectification avec créneau de dépassement au Sud de Bains-sur-Oust : 1980.
• Rectification au Sud du Pont de l'Eau : 1976.
• Déviation de Fégréac : 1993.
• Déviation de Saint-Gildas-des-Bois : abandonnée par le Conseil Départemental de la Loire-Atlantique (44) en raison des restrictions budgétaires imposées aux investissements routiers. Un itinéraire de contournement de fortune a été créé dès les années 1970 par l'emprunt de chemins vicinaux et de voies industrielles inadaptées au trafic à écouler.
• Déviation de Pontchâteau : 1976.
• Déviation de Besné : 1990.
• Déviation de La Pommeraie et nouvelle jonction sur la RN171 (via la D4) : 1980.

Autour de la route

• Forêt de Paimpont, également appelée Forêt de Brocéliande
• Camp de Coëtquidan - Saint-Cyr

Tracé historique

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003ETronc commun avec la N164 \u00e0 Redon\n\u003C/p\u003E\u003C/div\u003E","title":"Tronc commun avec la N164 \u00e0 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class=\"mw-parser-output\"\u003E\u003Cp\u003ERedon - Pontch\u00e2teau\n\u003C/p\u003E\u003C/div\u003E","title":"Redon - 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class=\"mw-parser-output\"\u003E\u003Cp\u003ETronc commun avec la N165 \u00e0 Pontch\u00e2teau\n\u003C/p\u003E\u003C/div\u003E","title":"Tronc commun avec la N165 \u00e0 Pontch\u00e2teau\n","link":"","strokeColor":"#F412F1","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":47.436446,"lon":-2.089787},{"lat":47.437011,"lon":-2.089771},{"lat":47.437069,"lon":-2.089605},{"lat":47.437,"lon":-2.088677},{"lat":47.436801,"lon":-2.087921},{"lat":47.436558,"lon":-2.087427},{"lat":47.436159,"lon":-2.087073},{"lat":47.433981,"lon":-2.086358},{"lat":47.433698,"lon":-2.086122},{"lat":47.433546,"lon":-2.085725},{"lat":47.433386,"lon":-2.085295},{"lat":47.433197,"lon":-2.08507},{"lat":47.432087,"lon":-2.084477}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EPontch\u00e2teau - Chauss\u00e9e de Nyon\n\u003C/p\u003E\u003C/div\u003E","title":"Pontch\u00e2teau - Chauss\u00e9e de 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class=\"mw-parser-output\"\u003E\u003Cp\u003EGa\u00ebl\n\u003C/p\u003E\u003C/div\u003E","title":"Ga\u00ebl\n","link":"","lat":48.131527,"lon":-2.221834,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EDonges\n\u003C/p\u003E\u003C/div\u003E","title":"Donges\n","link":"","lat":47.337543,"lon":-2.112722,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé déclassé en 1973.
En violet	Tronc commun avec les RN24, RN772, RN164 et RN165.
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) - D773
  • Gaël Église Saint-Pierre
    • D30 D773 (ex-N166) Gaël Village
    • Le Paradis
    • Le Meu
    • Le Pont Perrin
    • La Marguenais
    • Le Louya Chapelle
    • Point Clos
    •  Forêt Domaniale de Gaël-Paimpont
• Morbihan (56) - D773^D
  • Concoret (Konkored)
    • Dolmen des Trois Roches
    • Trébran
    • Roche Longue
    • La Loriette D2
    • Le Pertuis du Faux
• Ille-et-Vilaine (35) - D773
  • Paimpont (Pempont)
    • Gaillarde
    • Vignouse
    • La Secouette
    • Forêt de Paimpont (Brocéliande)
    • Carrefour de Minerai L'Étang Bleu
    • La Loge
    • Étang de Paimpont
    • Paimpont Ancienne Abbaye D38 D40 D71
    • La Croix du Houx
    • La Volée
    • La Belle Arrivée
    • Carrefour de la Butte aux Plaintes
    • Le Pavillon
    • Ruisseau des Plaintes
    • Les Forges de Paimpont Étang des Forges (vers D224)
    • Les Forges d'En Bas
    • Le Pont du Secret D724
  •  Court tronc commun avec la D724.
• Morbihan (56) - D773
  • Beignon
    • Le Poteau
    • Le Plessis
  • Saint-Malo-de-Beignon Église Saint-Malo Étang de Saint-Malo
  • Guer (Gwern-Porc'hoed) Châteaux
    • Bellevue-Coëtquidan  
    • La Garenne
    • Le Bois de Guénion  N24
    • La Bonde  
    • Saint-Hubert
    • La Boulais
    • Kerbiguet
    • ZA de la Dabonnière  
• Morbihan (56) - D311
  • Guer (Gwern-Porc'hoed) Châteaux
    •  
    • Guer Centre D772 D776
• Morbihan (56) - D773
  • Guer (Gwern-Porc'hoed) Châteaux
    • Les Tilleuls
    • La Pie Blanche
    • L'Oyon
    • Le Bénéac
    • Ruisseau de Saint-Nicolas
    • Château Coëtbo
    • La Noë Rideau
    • La Huais de Bas
    • La Pérais
  • Carentoir (Karantoer) Église du Temple, Châteaux
    • Le Marchix
    • La Bergerie
    • Le Poteau
    • Montvollet
    • La Guichardaie
• Morbihan (56) - D773^A
  • Carentoir (Karantoer) Église du Temple, Châteaux
    • Carentoir Centre
    • Le Chêne Helleuc
    •  
• Morbihan (56) - D773
  • Carentoir (Karantoer)
    • ZA de l'Épine
    • Le Tertre
    • Le Petit Vallon
  • La Gacilly (Gazilieg)
    • Château du Boschet
    • La Ferme du Boschet
    •  
    • Les Villes Jeffs D773^E
    • La Bouère
    • La Gacilly Centre Ruisseau des Brelles D8 D777
    • L'Aff
  • Cournon (Kornon)
    • La Grée-Saint-Jean D777
    • Le Haut de Lestun
    • Lestun
  • La Gacilly Hippodrome
  • Cournon La Corderie
  • Ruisseau de la Rosée

Flèche Michelin implantée à Bain-sur-Oust. © lucienmathurin

• Ille-et-Vilaine (35) - D873
  • Bains-sur-Oust
    • Ruisseau du Mothay
    • La Ferme Neuve
    • Gatepaille Ruisseau de la Bataille
    • Les Quatre-Vents
    • La Ruée
    • Le Pissot
  • Ruisseau de Via
  • Redon
    • Cotio
    • La Vieille Ville D65 D67 D775^B
    • Saint-Barthélémy D128 D764
    •  Tronc commun avec la D764, dans la traversée de Redon.
• Loire-Atlantique (44) - D773
  • Fégréac
    •   D164 Pont de l'Eau
    • Le Villo
    • L'Hôtel Saint-Denis  
• Loire-Atlantique (44) - VC
  • Fégréac Manoir, Châteaux
    • Fégréac Village D124 (déviée par l'est)
    • La Madeleine
    • L'Hôtel-Ménant
    • Canal de Nantes à Brest
    • L'Isac
  • Sévérac
    • La Doue
    • La Combe
• Loire-Atlantique (44) - D773
  • Sévérac
    • La Normandais
    • Bonne-Miette D126
    • La Noë Blanche
    • Ruisseau du Gué aux Biches D17
  • Saint-Gildas-des-Bois Abbaye XII^e, Château
    • La Mission  
    • Saint-Gildas Centre   D2
    • La Communauté D2
    • La Bosse de la Rivière D17
    • Gourap
    • La Barre
    • Ruisseau du Gué aux Biches
    • Le Planté
    • Le Bois Chauvel
    • Ruisseau du Pas de la Roche et de Tréaux
    • La Ferme École
  • Drefféac
    •  
    • Drefféac Villag
    • La Vallée du Bourg
    • Les Brondes Menhir
  • Pontchâteau
    • Bilais
    • La Mare
    • Bresnel Ruisseau Coët-Roz
    • La Grivolais  N165
    • Bellevue D33
    • Pontchâteau Centre Le Brivet D16 D33^A D126
    • La Hubaudais
    • Brignand
• Loire-Atlantique (44) - VC
  • Besné
    • La Gare
    • Besné Centre
    • L'Anglourie Canal de la Chaussée
    • La Gériais  
    • La Morandais
    • Pont d'Ardivais Canal d'Ardivais
• Loire-Atlantique (44) - D773
  • Donges
    • Ardivais
    • Hêlé
    • Le Magasin
    • La Laubrie
    • La Duchée
    • La Gravière D4
• Loire-Atlantique (44) - VC
  • Donges
    • Le Brouzil
    • Le Pont-de-Nion  N171 (ex-N771)