Route départementale française D12 (01)

Route départementale D12 (01)
Signalisation sur la D12. © Google Street View
Localisation
Pays	France
Département	Ain (01)
Caractéristiques actuelles
Itinéraire	Priay - Saint-Martin-du-Frêne
Longueur	38 km

Présentation

• La route départementale D12 (01), ou RD12 (01), est une route départementale de l'Ain (01) qui va de Priay à Saint-Martin-du-Frêne.

Historique

• La première route à avoir porté ce numéro, en 1813, est la route de Seyssel à Châtillon-de-Michaille, par Chancy, Billiat et Hochiat . On lui adjoindra en 1845 les annexes de la Charbonnière et de Billiat et Bellegarde. La route principale deviendra N491 en 1933, la première annexe deviendra N491^A à la même date. La deuxième annexe, quant à elle, correspond à la D25 moderne.
• La D12 actuelle est issue du Gc12 de Priay à St-Martin-du-Fresne. Le Dictionnaire Topographique et Historique de Pommerol (1907), cité par les Archives Départementales de l'Ain, nous apprend que de ce bourg [Priay] et par un pont sur l’Ain, commence le chemin de G. C. n° 12, de Priay à St-Martin-du-Fresne par St-Jean-le-Vieux, avec embt sur Ambronay. A Saint-Martin-du-Frêne, au bourg, aboutit le chemin de G. C. n° 12, venant de Priay par Izenave et Condamine-la-Doye..
• En 1963, elle est déviée entre Saint-Jean-le-Vieux et Hauterive au moyen d'une reprise d'axes pré-existants et de sections nouvelles.
• La D12 comporte plusieurs annexes :
  • la D12^A va de Genoud à Ambronay.
  • la D12^B dessert Saint-Jérôme.
  • la D12^C dessert Boyeux.
  • la D12^D n'existe plus.
  • la D12^E dessert Izenave.
  • la D12^F dessert Izenave, Lantenay et Outriaz.
  • la D12^G dessert Chevillard.
  • la D12^H dessert Maillat.

Autour de la Route

• L'Ain
• Aérium de Varey
• Le Haut-Bugey

Tracé

Chargement de la carte...

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Légende de la carte ou du tableau
En jaune	Tracé actuel.
En vert	Ancien tracé.
Pour plus d'informations sur les sources cartographiques, consulter cet article.
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• Ain (01) - D12
  • D984 Priay
  • L'Ain
  • Longeville D1075 D1084
  • Hauterive
  • Saint-Jean-le-Vieux D36
  • La Riez
  • la Courbattière
  • Châtillon-de-Cornelle Château D11
  • Corlier D8 D11^A
  • Brouillat
  • Vieu-d'Izenave
  • Le Borrey
  • Le Balmay
  • Saint-Martin-du-Frêne Tour D31 D1084