Route départementale française D203 (78)

Route départementale D203 (78)
La D203 (78) à Conflans-Sainte-Honorine en direction de Cergy-Pontoise. © Google Maps
Localisation
Pays	France
Département	Yvelines (78)
Caractéristiques actuelles
Itinéraire	N184 - D203 (95) (Conflans-Sainte-Honorine - Neuville-sur-Oise)
Longueur	0,8 km

Présentation

• La route départementale française D203 (78), ou RD203 (78), est une courte route départementale située dans le département des Yvelines (78) qui relie Conflans-Sainte-Honorine à Neuville-sur-Oise.
• Depuis la RN184, cet axe permet d'accéder à Cergy-Pontoise et à l'Ouest du Val-d'Oise (95), au moyen d'un itinéraire alternatif à l'A15.
• Elle est prolongée dans ce département par la D203 (95).

Historique

Déviation de Conflans-Sainte-Honorine

• Cette route semblait autrefois débuter depuis la RN184 historique au cœur de Conflans-Sainte-Honorine. Consécutivement à la déviation de cette route nationale (numérotée RN184^D, conçue en 1974, actuelle RN184), un nouveau barreau se détachant de ce contournement est formé au Nord de l'agglomération. La route est doublée jusqu'à la limite départementale tandis que le tracé via Conflans est déclassé dans la voirie communale.

Autres aménagements

• En 1980 est réaménagé le dangereux carrefour à niveau avec la RN184 pour des raisons de sécurité. Le tourne-à-gauche Cergy-Pontoise - Éragny-sur-Oise est condamné et une passerelle piétonne est créée pour éviter la traversée des quatre voies de la voie rapide.
• En 1998 est aménagé au Nord-Ouest de Conflans un giratoire desservant la zone d'activités des Boutries.

Autour de la route

• Conflans-Sainte-Honorine : église Saint-Maclou, château
• L’Oise
• La Seine

Trafic

• 14 388 véhicules/jour (2009).

Tracé

Chargement de la carte...

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Légende de la carte ou du tableau
En jaune	Tracé de la D203 (78).
En blanc	Tracé déclassé dans la voirie communale de Conflans-Sainte-Honorine.
En gris	Tracé démoli aux abords de la RN184.
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.

• Yvelines (78) - D203
  • Conflans-Sainte-Honorine Église Saint-Maclou, Château
    • N184 Boulevard Salvador Allende
    • Rue de Conflans
• Val-d'Oise (95) - D203