Route nationale française 18

Route nationale 18
Piquet de jalonnement de la N18.© Marc Verney / Sur ma route
Localisation
Pays	France
Région	Grand Est
Caractéristiques de 1824 à 1978
Itinéraire	Verdun - Étain - Longwy -
Longueur	70 km
Caractéristiques de 1978 à 2006
Itinéraire	Étain - Longwy -
Longueur	52 km

Présentation

• La route nationale 18, ou RN18, est une ancienne route nationale française qui a connu plusieurs affectations au gré des déclassements et reclassements dans le réseau routier national.

Historique

Généralités

• A sa création, en 1824, elle est décrite comme étant la route de Paris à Longwy et à Luxembourg. Elle s'embranche à Verdun sur la route n° 3, de Paris à Metz. Elle succède alors à la route impériale 21.
• La RN18 reliait donc Verdun au Grand-Duché de Luxembourg via Longwy, dans le prolongement de la N3. Suite à la révolution belge de 1830 et au traité du 19 avril 1839 fixant les nouvelles frontières du royaume de Belgique, le Pays d'Arlon est devenu belge et le point d'aboutissement de la RN18, situé à Mont-Saint-Martin, est devenu la frontière belge. Il fallait donc franchir deux frontières en quelques kilomètres pour atteindre Luxembourg.
• Le 1^er janvier 1976, son tracé est modifié pour être réduit à la section d'Étain au Luxembourg :
  • La section entre Verdun et Étain est reprise par la N3.
  • Le tracé originel entre Longwy et la frontière belge à Mont-Saint-Martin est déclassé en D918.
  • Un nouvel itinéraire est formé entre Longwy et la frontière luxembourgeoise à Longlaville, par absorption de l'ancienne N52^A.
• Elle devient donc en 1978 la route d'Étain, N. 3, à la frontière luxembourgeoise, à Longlaville.
• Dans les années 1990, après la mise en service de la rocade de Longwy, l'itinéraire par Longlaville est, à son tour, déclassé en D918^A et remplacé par une courte bretelle en provenance de la N52.
• En 2005, un tronçon de 4 km (numéroté officiellement N1018) rallonge son tracé à partir d'Étain pour rejoindre la N3 plus au Sud.
• En 2006, elle est finalement déclassée dans son intégralité et devient la D618.

Construction

• Rectification de la côte à l'Est de Verdun : 1841.
• Ponts de Longuyon : 1861 (reconstruction).
• Rectification de la côte de Longuyon : 1847.
• Côtes des Maragoles : 1862.
• Côte de Sorbey près de Longwy : 1869.

Tracés historiques

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003E\u00c9tain, extr\u00e9mit\u00e9 Sud de la d\u00e9viation ouverte en 2005\n\u003C/p\u003E\u003C/div\u003E","title":"\u00c9tain, extr\u00e9mit\u00e9 Sud de la d\u00e9viation ouverte en 2005\n","link":"","lat":49.185631,"lon":5.663495,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EVerdun\n\u003C/p\u003E\u003C/div\u003E","title":"Verdun\n","link":"","lat":49.161924,"lon":5.38475,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EMont-Saint-Martin (fronti\u00e8re belge)\n\u003C/p\u003E\u003C/div\u003E","title":"Mont-Saint-Martin (fronti\u00e8re belge)\n","link":"","lat":49.555229,"lon":5.787456,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003E\u00c9tain, point de d\u00e9part apr\u00e8s 1973\n\u003C/p\u003E\u003C/div\u003E","title":"\u00c9tain, point de d\u00e9part apr\u00e8s 1973\n","link":"","lat":49.214499,"lon":5.639677,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELonglaville (fronti\u00e8re luxembourgeoise)\n\u003C/p\u003E\u003C/div\u003E","title":"Longlaville (fronti\u00e8re luxembourgeoise)\n","link":"","lat":49.540597,"lon":5.813849,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé déclassé en 2006.
En rouge clair	Tracé de la déviation d'Étain classée de façon éphémère en tant que RN1018 en 2005 et déclassée en 2006.
En orange	Itinéraire constitué à partir de la RN52A en 1978 (déclassé en 1991).
En jaune	Tracé originel déclassé en 1973 et tracé déclassé localement après déviation.
En vert	Tracé cédé à la RN3 en 1978.
En bleu ciel	Tracé originel rectifié au XIXe siècle.
En violet	Tronc commun avec la RN52 de 1991 à 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.

Verdun - Étain (avant 1973, repris par la RN3)

Borne kilométrique en tôle sur la RN18 à Eix. © facel55 / Forum-Auto.com

Accès à la RN18 à Longlaville. © Google Maps

• Meuse (55) - D630
  • Verdun Nombreux Monuments
    •  Pont Chaussée La Meuse / Canal de l'Est
    • Faubourg Pavé D964
• Meuse (55) - D603
  • Verdun
    •  ZI de Tavannes
    • La Blancharderie
  • Eix
    • Bellevue
    • La Fiéveterie  
  • Abaucourt-Hautecourt
    • Eix-Abaucourt
    • Abaucourt
    • Cimetière Militaire Allemand
  • Étain
    • Pont de Chasson Ruisseau de Tavannes
    • D65
    • L'Orne Châteaux, Église (Pietà de Ligier Richier), Synagogue Maison des Fusillés
    • Étain Centre D65 D631
    • Les Cens
    •   D603 (vers D906)

Étain - Longwy (avant 2006)

• Meuse (55) - D618
  • Amel-sur-l'Étang
    • Longeau
    • D106
    • Bellevue
    • Le Pont des Quatre Dames
  • Senon Le Ratentout
  • Spincourt
    • La Huarde
    • Spincourt Village L'Othain
    • Ruisseau Puget
  • Nouillonpont
    • Nouillonpont Village
    • Étang de la Saulx
  • Rouvrois-sur-Othain
    • Rouvrois Village Ruisseau de la Belle Fontaine
    • Constantine D66
  • Arrancy-sur-Crusnes La Fontaine Saint-Martin

• Meurthe-et-Moselle (54) - D618
  • Longuyon Collégiale Sainte-Agathe
    • Boussieux
    • Longuyon Centre La Chiers / La Crusnes D643 E44

• Meurthe-et-Moselle (54) - D618 E44
  • Longuyon La Machine
  • Tellancourt D29
  • Villers-la-Chèvre
  • Cosnes-et-Romain Les Longues Raies  
    • les Maragoles  
  • Longwy Fortifications, Château Fort
    •    N52 E44 E411 D520
    • Longwy Centre D18 D26
  • Longlaville D218^A
  • Mont-Saint-Martin  N52 E44 E411 D46^B D918
• Luxembourg
• Canton d'Esch-sur-Alzette -  5 

À Mont-Saint-Martin (avant 1973)

• Meurthe-et-Moselle (54) - D918
  • Mont-Saint-Martin  N52 E44 E411
• Belgique
• Wallonie / Luxembourg - N883

Trafic

• 8 675 véhicules par jour (en 2010, à Tellancourt)
• 14 350 véhicules par jour (en 2011, à Longlaville, entre Longwy et la frontière luxembourgeoise)

Liens externes

•  [Sur ma Route] Balade sur l'ancien tracé de la RN18 sur le site de Marc Verney