Route départementale française D27 (95)

Route départementale D27 (95)
La D27 (95) à Osny en direction d'Auvers-sur-Oise. © Google Maps
Localisation
Pays	France
Département	Val-d'Oise (95)
Caractéristiques actuelles
Itinéraire	D915 - D928 (Osny - Auvers-sur-Oise)
Longueur	5,5 km

Présentation

• La route départementale D27 (95), ou RD27 (95), est une route départementale du Val-d'Oise (95) qui relie Osny à Auvers-sur-Oise via Ennery.

Généralités

• Cette route sans traversée d'agglomération permet l'évitement des traversées de Pontoise et d'Ennery sur la D927. Elle permet ainsi aux villages de Vallangoujard, d'Hérouvile-en-Vexin et d'Ennery de bénéficier d'un accès facilité aux A15 et D915 vers Paris.
• En outre, elle offre un itinéraire alternatif à l'étroite D4 le long de l'Oise, entre Auvers-sur-Oise et Pontoise. Toutefois, son éloignement trop au Nord de cette dernière agglomération et ses caractéristiques hétérogènes (2 voies, nombreux giratoires) ne permettent pas de capter efficacement le trafic de transit.

Historique

Déviations d'agglomérations

• Section Osny - Ennery : 1983 (par reprise d'un chemin vicinal existant à l'Ouest).
• Déviation Nord-Est d'Ennery (numérotée D927, dans la continuité de cette dernière) : 5 février 1999.
• Section Ennery - Auvers-sur-Oise (par reprise d'un chemin vicinal existant) :
  • 4 millions d'euros ont été nécessaires pour réaliser cette route à 2 voies, giratoires à ses extrémités et bandes cyclables (très réduites) sur la D928 entre Auvers-sur-Oise et Hérouville-en-Vexin.
  • Elle est mise en service selon le calendrier suivant (source : extraits du registre des délibérations de la ville d’Ennery, période 1992-2000) :
    • 20 juin 1994 : Avis de la municipalité d'Ennery sur le projet de déviation reliant les D927 et D928. Elle demande que soit retenu la variante de tracé n° 3.
    • 6 octobre 1997 : Présentation par le Conseil départemental du projet « RD928 – Chemin de l’Isle – déviation d’Auvers » à la municipalité d'Ennery.
    • 6 juin 2003 : Ouverture à la circulation (dans l'après-midi).

Autres aménagements

• Traversée d'Osny :
  • Carrefour de la Demi-Lieue (D915, dénivellation). Cet aménagement très attendu des automobilistes met fin à un carrefour à feux tricolores accidentogène et source de ralentissements quotidiens. Le montant total des travaux s'est élevé à 10 millions d'euros, financés par le Conseil départemental, le Syndicat d'Agglomération Nouvelle de Cergy-Pontoise et la ville d'Osny.
  • Le carrefour est ouvert à la circulation selon le calendrier suivant :
    • Octobre 2003 : Mise en place d'un carrefour provisoire à feux tricolores sur la D915.
    • Juin 2004 - Janvier 2005 : Terrassements et travaux de réalisation de la trémie.
    • 25 et 26 août 2005 : Mise en service de la trémie sens Marines-Cergy et du carrefour giratoire desservant la D27 en surface.
    • 15 octobre 2005 : Inauguration.
    • 17 octobre 2005 : Ouverture à la circulation (dans la matinée).
  • Carrefour d'accès à la maison d'arrêt du Val-d'Oise est créé en 1989.

• Traversée d'Ennery :
  • Giratoire du Fond de la Ville : années 2000.

Autour de la route

• Parc Naturel Régional du Vexin français

Tracé

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003EOsny\n\u003C/p\u003E\u003C/div\u003E","title":"Osny\n","link":"","lat":49.07104499474993,"lon":2.0827414991687565,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAuvers-sur-Oise\n\u003C/p\u003E\u003C/div\u003E","title":"Auvers-sur-Oise\n","link":"","lat":49.08954622420828,"lon":2.146182210801877,"icon":""}]}

Légende de la carte ou du tableau
En jaune	Tracé de la D27 (95).
En violet	Tronc commun avec la D927.
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.

• Val-d'Oise (95) - D27
  • Osny La Viosne Église, Château de Grouchy
    •    D915   D27  La Demi-Lieue
    • Vallée Guyon
  • Ennery (contournement par le Nord) Église Saint-Aubin, Château XVII^e
    •  Parc naturel régional du Vexin français
    • Fond de la Ville  
    • Fossé à l'Eau
    • Bois des Maréchands   VC
    •  Court tronc commun avec la D927.
    • Vaux Péans  
    • Les Tillets
  • Auvers-sur-Oise L'Oise Château, Église, etc.
    • Les Champs Palous
    • Fond des Cossardes   D928