Route départementale française D311 (69)

Route départementale D311 (69)
Localisation
Pays	France
Départements	Rhône (69D), Métropole de Lyon (69M)
Caractéristiques actuelles
Itinéraire	Craponne - Saint-Symphorien-sur-Coise
Longueur	31 km

Présentation

• La route départementale D311 (69), ou RD311 (69), est une route départementale de la circonscription départementale du Rhône (69) qui relie Craponne à Saint-Symphorien-sur-Coise.

Historique

Généralités

• Il s'agissait autrefois de l'ancienne D11 qui desservait les Monts du Lyonnais en direction de Chazelles-sur-Lyon (42) et de la plaine du Forez. Elle démarre sur le tracé de l'ancienne voie romaine : la Via Aquitania qui correspond à la D489 à Craponne. Elle croise à Saint-Symphorien-sur-Coise l'Iter Viennensis qui joignait Vienne à Roanne.
• La volonté de nombreux habitants de Lyon à vivre à la campagne fit développer l'agglomération de Lyon vers l'ouest entrainant la construction de nombreuses maisons individuelles aux abords des villages des Monts du Lyonnais, rendant l'ancienne D11 très chargée.
• Elle possédait une annexe, la D11^E, qui correspondait à la déviation de Brindas avant que celle-ci ne soit attribuée à la D11 suite au déclassement de la traversée du centre-ville.
• La réforme du réseau routier par le Conseil Départemental de 2006 lui ajouta le préfixe en 3xx pour l'actualiser dans l'ensemble des routes départementales à grande circulation.
• Depuis le 1^er janvier 2015, son exploitation est partagée entre le Conseil Départemental du Rhône (69D) et la Métropole de Lyon (69M) qui a conservé son numéro D311.

Aménagements

• Déviation de Brindas : 1956.
• Rectification, recalibrage et élargissement ponctuel à 3 voies entre Thurins et Saint-Martin-en-Haut : 2003.
• Déviation de Saint-Martin-en-Haut : milieu des années 1960.

Autour de la route

• La vallée encaissée du Garon entre Messimy et Saint-Martin-en-Haut
• Le hameau de Rochefort et sa chapelle romane classée près de Saint-Martin-en-Haut.
• Le Signal Saint-André, deuxième point culminant (934 m) des Monts du-Lyonnais.
• L'ancienne ville historique de Saint-Symphorien-sur-Coise avec sa collégiale six fois centenaire et son orgue.
• L'ancienne voie ferrée métrique partant de l'ancienne gare de Lyon-Saint-Just partageant un tronc commun avec celle de Mornant-Saint-Martin-la-Plaine jusqu'à Messimy et faisant aussi son terminus à Saint-Symphorien-sur-Coise.

Tracé

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003ECraponne\n\u003C/p\u003E\u003C/div\u003E","title":"Craponne\n","link":"","lat":45.747312,"lon":4.732318,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESaint-Symphorien-sur-Coise\n\u003C/p\u003E\u003C/div\u003E","title":"Saint-Symphorien-sur-Coise\n","link":"","lat":45.63560972909023,"lon":4.460032074890066,"icon":""}]}

Légende de la carte ou du tableau
En orange	Tracé originel dévié
En jaune	Tracé de la D311 (69D)
En bleu ciel	Tracé de la D311 (69M)
Pour plus d'informations sur les sources cartographiques, consulter cet article.
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• Métropole de Lyon (69M) - D311
  • D489 Craponne
• Rhône (69D) - D311
  • La-Pillardière
  • Brindas D30 D50 D75
  • Messimy Malataverne D30 D75
  • Le-Pont D75
  • Thurins
  • Saint-Martin-en-Haut D34
  • La Chèvre
  • Saint-Symphorien-sur-Coise D2 D4