Route nationale française 520

Route nationale 520
Panneau Michelin sur la RN520 à Entre-Deux-Guiers.© G.E.
Localisation
Pays	France
Régions	Nouvelle-Aquitaine, Auvergne-Rhône-Alpes
Exploitation
Gestionnaire	DIR Centre-Ouest
Caractéristiques de 1933 à 1973
Itinéraire	Les Éparres - Les Échelles
Longueur	54 km
Caractéristiques de 1992 à 2006
Itinéraire	Grands Boulevards de Limoges
Longueur	13 km
Caractéristiques actuelles
Itinéraire	Rocade de Limoges
Longueur	3,5 + 14 km

Présentation

• La route nationale 520, ou RN520, est une route nationale française qui comprend deux sections autour de Limoges :
  • La première section correspond à la traversée de Limoges (grands boulevards) entre l'autoroute A20   33  et la RN21.
  • La seconde section correspond à la rocade Nord-Ouest à l'agglomération de Limoges entre l'autoroute A20   28  et la RN141.
• La transformation en voie express de la seconde section est programmée car elle fait partie de la RCEA. Les travaux consisteront en un doublement de la chaussée et la dénivellation des carrefour giratoires, sauf celui avec la RN141.

Historique

Généralités

• A sa création, en 1933, elle est définie comme la route de Bourgoin aux Échelles par Voiron.
• Elle est issue du chemin de grande communication n° 67 de l'Isère, ou Gc67 (38), et d'un court tronçon de la route départementale n° 7 de Savoie, ou RD7 (73).
• Le trajet de Bourgoin aux Éparres se faisait alors via la N85.
• Elle possédait 3 annexes : les N520^A, N520^B et N520^C.
• A l'occasion de la réforme de 1972, cet itinéraire est déclassé en trois temps : 1^er janvier 1973 entre Les Éparres et Voiron, 1^er janvier 1974 pour le court tronçon savoyard et 1^er janvier 1976 de Voiron à Entre-Deux-Guiers.
• A partir du 17 décembre 1992, et jusqu'en 2006, la RN520 correspondait aux Grands Boulevards de Limoges rocade entre les sorties 30 et 33 de l'A20). Ce tracé avait été conservé dans le réseau routier national dans l'attente du reclassement de la D2000. De fait, après leur déclassement de la voirie nationale, en 2006, l'entretien des Grands Boulevards Nord de Limoges relève désormais de l'agglomération de Limoges.
• Au Sud, la nouvelle voie urbaine qui relie le nouveau pont sur la Vienne à l'autoroute A20   36  aurait dû être classée en RN520 juste avant la réforme de 2006 en remplacement de la rocade existante longeant la Vienne et atteignant l'A20 à la sortie   33 . Finalement, la section des Grands Boulevards Sud de Limoges a conservé son statut et son numéro.
• Alors que la section Nord des Grands Boulevards de Limoges était déclassée en 2006 dans la voirie communale, la RN520 se voyait reportée sur l'ancienne D2000, la Rocade Nord-Ouest de Limoges, initialement construite par le Conseil Départemental de la Haute-Vienne (87).

Construction

• Section Voiron - La Croix-Bayard : 1882 (D7).
• Section La Croix-Bayard - L'Étang-Dauphin : 1884 (D7).
• Section L'Étang-Dauphin - Saint-Etienne-de-Crossey : 1852 (D7).
• Section Pont du Demay - Tourbières-de-l'Herrétang : 1884 (D7).
• Section Tourbières-de-l'Herrétang - Saint-Laurent-du-Pont : 1852 (D7).
• Section Le Révol - Entre-Deux-Guiers : 1852 (D7).

Aménagements

• Déviation des Echelles : 1978.

Description

Des Éparres aux Échelles

Rôle

• Le tracé de la RN520 d'origine est constitué de deux tronçons assurant deux missions bien distinctes:
  • Des Éparres à Voiron, il s'agit d'une route secondaire reliant Bourgoin-Jallieu à Voiron. Des panneaux verts y ont fait leur apparition au début des années 2000. Ce passage est plus rapide qu'en empruntant les RD1085 et RD592.
  • De Voiron aux Échelles, c'est une route à grande circulation faisant partie de la liaison verte Chambéry-Valence.

Tracé

• La D520 quitte la D1085 aux Éparres, au sud de Bourgoin. Elle s'élève rapidement dans les collines des Terres Froides. A Montrevel, elle croise l'A48, puis reste parallèle à celle-ci jusqu'au col de la Rossatière.
• Au-delà, elle atteint Chabons, situé sur un petit plateau. Elle traverse ensuite une chaîne de collines parallèlement à l'A48, puis débouche dans la plaine de Bièvre à Colombe.
• Il faut prendre à gauche au giratoire de la D50^F. Le paysage change: la Chartreuse, le Vercors, Belledonne apparaissent au loin, tandis que la route longe la chaîne de collines précédemment traversée sur son flanc sud dans la traversée d'Apprieu. Après avoir traversé la vallée de la Fure, elle traverse ensuite le gros bourg de la Murette.
• Peu avant Voiron, on croise la D1076, faisant office de rocade de Voiron. On continue en direction du centre, et l'on rejoint la D1075.

• La deuxième partie vers les Échelles débute aux pieds de la cathédrale de Voiron, au carrefour de la D1075. On prend rapidement de la hauteur aux pieds de collines de plus en plus imposantes à mesure que l'on approche du massif de la Chartreuse. Après Saint-Étienne-de-Crossey, on entre dans les gorges de Crossey, le long de falaises calcaires. Ces gorges ne sont pas parcourues par un cours d'eau.
• A leur extrémité, on entre dans une vaste plaine établie aux pieds du massif de la Chartreuse. On traverse le Guiers Mort à St-Laurent-du-Pont, puis l'on bénéficie d'un long alignement jusqu'à Entre-Deux-Guiers.
• Un giratoire donne accès à la déviation pour continuer en direction de Chambéry. Le tracé d'origine oblique à gauche. Celui-ci traverse Entre-Deux-Guiers par une rue assez étroite. Le Guiers Vif est franchi à la limite Isère-Savoie, puis l'on rentre dans le bourg des Échelles. On rejoint la D1006 dans un carrefour étriqué en pleine ville.
• La déviation contourne ces deux localités par l'est. Un petit échangeur donne accès à la D520c vers Saint-Pierre-d'Entremont. Après avoir traversé le Guiers Vif, on rejoint la D1006 par un giratoire. On l'emprunte sur plus de 20 km pour rejoindre Chambéry.

Futur

• L'ancien tracé de la D2000 devenu N520 en 2006 doit être doublé et dénivelé dans les prochaines années.
• La déviation d'Aixe-sur-Vienne devrait rattachée à terme à la RN21 et elle débutera dans le prolongement de la RN520.
• Un contournement Sud-Ouest de Limoges était prévu qui aurait été directement réalisé sous forme de voie express.

Tracés historiques

Contournement de Limoges (actuel)

Chargement de la carte...

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Légende de la carte ou du tableau
En rouge	Tracé actuel, ouvert en 1997 en tant que D2000 et classé N520 en 2006.
En orange	Tracé "Grands Boulevards" classé en 1992 et resté classé en 2006.
En jaune	Tracé "Grands Boulevards" classé en 1992 et déclassé en 2006.
En vert	Tracé sud, au final jamais classé en 2006.
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.

Rocade de Limoges (tracé actuel)

• Haute-Vienne (87) - N520
  •    A20 E09   28  Razès, Ambazac, Châteauroux, Montluçon, Paris, D220 Razès, Bonnac-la-Côte, D914 Ambazac, Guéret par RD
  •    A20 E09   28  Limoges, Brive, Toulouse
  •   Limoges-Nord, Z.I. et Z.C. Nord de Limoges, Centre routier, Beaubreuil
  •  N520 E603
  •   59  N147 : Villes desservies : Nieul, Couzeix, Bellac, Poitiers
  •   61  D200 : Villes desservies :  Limoges-Bellegarde, Saint-Gence, Verneuil-sur-Vienne, Refuge S.P.A.
  •  N520 E603
  •    N141 E603   62  Saint-Junien, La Rochefoucauld, Angoulême et Niort, D941^A Le Breuil, D2000 (N21) Aixe-sur-Vienne et Périgueux

Grand Boulevards de Limoges (tracé partiellement déclassé)

Panneaux sur la RN520 à Limoges. © G.E.

Panneaux sur la RN520 à Limoges. © G.E.

• Haute-Vienne (87) - VC
  •  A20   30 
  • Limoges
  • Boulevard Robert Schuman
  • Avenue du Général Leclerc
  • Boulevard des Arcades
  • Boulevard du Vigenal D947
  • Boulevard de Beaublanc
  • Boulevard de la Borie D941
  • Boulevard du Mas-Bouyol D79
  • Boulevard de Vanteaux
  • Boulevard Bel-Air N21 VC
• Haute-Vienne (87) - N520
  • Quai Salvador Allende
  • Quai Saint-Martial VC
  • Quai Louis Goujaud
  • Port du Naveix
  •  A20   33  D29

Voie de liaison Sud de Limoges (jamais classé)

• Haute-Vienne (87) - VC
  • N21 N520 VC Limoges
  • Boulevard de la Valoine D220
  • Allée Victor Ballard
  •  A20   36 

Les Éparres - Les Échelles (avant 1973)

Chargement de la carte...

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Légende de la carte ou du tableau
En rouge	Tracé de 1933 à 1973.
En violet	Tronc commun avec la N75 à Voiron.
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.

• Isère (38) - D520
  • D1085 Les Éparres La Calabre
  •  
  • Succieu Le Grand Champ
  • Châteauvilain
    • Bouvant
    • Chavaux
  • Biol
    • La Picardière
    • Le Rapoux
    • Biol Village
    • Bas Biol
  • Montrevel Le Poulard L'Hien D51
  •  Col de Rossatière (565 m)
  • Châbons
    • La Touvière
    • Rossatière
    • La Maison Rouge
    • Châbons Centre
  • Burcin
    • Les Quatre Routes D73
    • L'Adret
  • Oyeu Le Valfroide D17
  • Apprieu
    • La Plaine   D50^F D73^A
    • La Contamine
    • La Couchonnière
    • Apprieu Village
    •   Lacets
  • Saint-Blaise-du-Puits
    • La Ravignouse La Fure
    • Talamud
  • La Murette
    • La Couratière
    • La Murette Centre  

      

      Plaque de cocher sur l'ancienne RN520 à Voiron. © G.E.

    • Le Paysan
  • Voiron Églises, Tour Barral, Caves de la Chartreuse
    • L'Agnal
    •   D1076
    • Château de la Brunerie
    •   D1075
    •  Court tronc commun avec la D1075.
    • Voiron Centre Musée Mainssieux D592 D1075 (vers D12)
  •  Parc naturel régional de Chartreuse
  • Coublevie
    • Le Pillet
    • La Tivollière
  •  
  • Saint-Étienne-de-Crossey
  • Défilé du Grand-Crossey
  • Saint-Joseph-de-Rivière
    • Les Demay D520^A
    • Sirandière
    • La Côte
    • Saint-Joseph Village
  • Saint-Laurent-du-Pont Le Guiers Mort Église et Hôpital Saint-Bruno
    • Saint-Laurent Centre D520^B
    • Le Révol  
  • Entre-Deux-Guiers
    •  Chartreuse-Guiers  
    • La Rosette L'Aigue Noire
• Isère (38) - D520^D
  • Entre-Deux-Guiers
    • Montcelet
    • Entre-Deux-Guiers Centre D520^C
    • Le Guiers Vif
• Savoie (73) - D920
  • Les Échelles Ancienne Commanderie D1006

Sites Sara

• La RN520 sur Saratlas
• Fil du Forum Sara sur la RN520

Liens externes

• Site officiel du projet de contournement Sud-Ouest de Limoges