Route départementale française D18 (43)

Article à actualiser (Décembre 2021)
Historique incomplet

Route départementale D18 (07, 43)
Localisation
Pays	France
Départements	Ardèche (07) Haute-Loire (43)
Caractéristiques de 1821 à 1938
Itinéraire	Roiffieux - Lalouvesc
Longueur	6,95 km
Caractéristiques actuelles
Itinéraire	N88 - D105 (Saint-Hostien - Riotord)
Longueur	51,562 km

Présentation

• La route départementale D18 (07, 43), ou RD18 (07, 43), est une route départementale de l'Ardèche (07) et de la Haute-Loire (43) qui relie Saint-Hostien à Riotord, par Tence.
• Situé dans le Haut-Vivarais, cet axe traverse des espaces très peu peuplés.

Historique

En Ardèche

• La première RD18 (07) est créée par une ordonnance datée de 1821, décrite comme étant la route d'Annonay à Satilieu, par Saint-Alban. En 1933, elle est nationalisée et devient la RN578^A.
• La deuxième D18 (07) classée après 1938 est certainement issue d'un chemin vicinal de la voirie ordinaire, ou Vo de Saint-André-en-Vivarais (anciennement Saint-André-des-Effangeas), du fait que cet axe n'allait au-delà de l'ancien chemin vicinal Gc12 (07) depuis Saint-Bonnet-le-Froid à la fin du XIX^e siècle.

En Haute-Loire

• La D18 (43) classée après 1938 est issue de la route départementale n°7 (43), ou RD7 (43), allant d'Yssingeaux à Saint-Bonnet, classée en 1813, ainsi que du chemin vicinal d'intérêt commun n°5 (43), ou Ic5 (43), allant de Saint-Hostien à Tence, classé en 1843. En 1892, ces axes ont été reclassés dans la voirie vicinale en tant que Gc18 (43).

Tracés

de Saint-Hostien à Riotord (après 1938)

Chargement de la carte...

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Légende de la carte ou du tableau
En jaune	Tracé de la D18 (07, 43).
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.

• Haute-Loire (43) - D18
  • N88 Saint-Hostien
  • D28
  • Le Fournial
  • Queyrières
  • Pialevialles D42
  • Araules
  • Saint-Jeures D7
  • Les Moulins
  • Chazeaux
  • Tence D103 D185 D500
  • Le Mas-de-Tence
• Ardèche (07) - D18
  • D112
• Haute-Loire (43) - D18
  • Saint-Bonnet-le-Froid D9 D44 D105 D532
  •  Col du Sapet (1087 m)
  • La Chalençonnière
  • Saint-Julien-Molhesabate
  • Coirolles
  • Riotord D501 D503

En Ardèche : d'Annonay à Satilieu (de 1821 à 1938)

Chargement de la carte...

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Légende de la carte ou du tableau
En jaune	Tracé historique de la route.
En vert	Section de la route prolongée au XIXe siècle.
En bleu ciel	Ancienne section avant rectification du XIXe siècle.
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.

• Ardèche (07) - D578^A
  • Roiffieux
    • VC Pont de Lignon
  • Saint-Alban-d'Ay Château du Rieux
    • Ménétrieux
    • Les Chavanes
    • Font-Bénite
    • Saint-Alban Village
    • Le Cabaret Neuf
    • Fiolebise
    • Empête
  • Satillieu
    • La Tuilière
    • Japperenard