Route départementale française D3 (15)

Route départementale D3 (15)
La D3 à l'entrée de Riom-ès-Montagnes. © Atlasroutier
Localisation
Pays	France
Département	Cantal (15)
Caractéristiques actuelles
Itinéraire	D922 (La Baraquette) - Murat
Longueur	57 km

Présentation

• La route départementale D3 (15), ou RD3 (15), est une route départementale du Cantal (15) qui relie la D922, au Sud de Bort-les-Orgues, à Murat.
• Entre Le Chaumeil et Murat, elle a récupéré une section de l'ancienne RN680. Dans la traversée de Riom-ès-Montagnes, elle reprend également l'ancien tracé de la RN678.
• Cet axe majeur du département contribue à relier tout le Nord du Cantal à l'autoroute A89 à Ussel. Inversement, il donne accès à l'autoroute A75 à Massiac et à Saint-Flour.
• Il a été lourdement modernisé avec un recalibrage systématique et plusieurs déviations de villages.

Historique

• Rectification entre La Baraquette et Montpigot : 1995.
• Rectification et recalibrage entre Montpigot et Antignac : 1995.
• Déviation d'Antignac : 1994.
• Rectification et recalibrage entre Antignac et Salsignac : 1994.
• Déviation de Salsignac : 1994.
• Rectification et recalibrage entre Salsignac et Neuvialle : 1994.
• Déviation de Neuvialle : 1978.
• Rectification et recalibrage entre Neuvialle et Riom-ès-Montagnes : début des années 1980
• Rectification et recalibrage entre Riom-ès-Montagnes et Taussac: milieu des années 1990.
• Rectification et recalibrage entre Taussac et Pierrebesse : 1990.
• Rectification et recalibrage entre Pierrebesse et Ségur-les-Villas : milieu des années 1990.
• Déviation de Ségur-les-Villas : 1999.
• Rectification et recalibrage entre Ségur-les-Villas et Murat : fin des années 1990.
• Déviation Ouest de Murat : 1977.

Tracé

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En jaune	Tracé de la D3 (15)
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• Cantal (15) - D3
  • D922 La Baraquette
  • D22
  • Gouchal
  • Antignac
  • Salsignac
  • Ensalers
  • Riom-ès-Montagnes D678
  • La Vidal
  • Taussac
  • Pierrebesse D62
  • Roche D21
  • Ségur-les-Villas
  • D9 D16
  • Le Chaumeil D680
• Cantal (15) - D3 (ex-N680)
  •  Col d'Entremont (1210 m)
  • Murat N122 D926

Trafic

• 2 575 véhicules par jour à Riom-ès-Montagnes (2011)