Route nationale française 488

Route nationale 488
La RN488 à Terrenoire.© France Autoroutes
Localisation
Pays	France
Régions	Auvergne-Rhône-Alpes, Bourgogne-Franche-Comté
Exploitation
Gestionnaire	DIR Centre-Est
Caractéristiques de 1933 à 1978
Itinéraire	Chevagnes - Dompierre-sur-Besbre // Diou - Digoin
Longueur	32 km
Caractéristiques de 1978 à 2006
Itinéraire	Pénétrante Est de St-Étienne
Longueur	4,5 km
Caractéristiques actuelles
Itinéraire	Pénétrante Est de St-Étienne
Longueur	2 km

Présentation

• La route nationale 488, ou RN488, est une route nationale française qui fait office depuis 1978 de pénétrante Est de Saint-Étienne dans le prolongement de la N88 (voie express).
• Cette très courte route nationale a été réduite en 2006 à la simple liaison entre la RN88 et le rond-point Antoine Pinay, qui marque l'entrée dans Saint-Étienne.
• Elle est intégralement située sur le territoire de Saint-Étienne Métropole mais reste gérée par la DIR Centre-Est.

Historique

• A sa création, en 1933, elle est définie comme la route de Moulins-sur-Allier à Digoin.
• Dans l'Allier, elle est issue du chemin de grande communication n° 46, ou Gc46 (03), pour la section comprise entre Chevagnes et La Fontaine Saint-Martin, commune de Molinet, et du chemin de grande communication n° 44, ou Gc44 (03), pour la section comprise entre La Fontaine Saint-Martin et la limite de la Saône-et-Loire. Le court tronçon de 525 m dans la Saône-et-Loire, correspondant au pont de Digoin, est issu du chemin de grande communication n° 68, ou Gc68 (71).
• Le trajet de Moulins à Chevagnes se faisait via la N73.
• Elle est intégrée en 1978 dans le second tracé de la N79.
• En 1999, le tracé de celle-ci fut encore dévié et la route porta encore un moment le nom de N79 malgré l'existence d'un autre itinéraire portant sur Montmarault et ayant le même nom et la même signalisation.
• Ce n'est qu'en 2006 que sa nouvelle numérotation et son déclassements furent effectifs. Elle devint D779 dans l'Allier (03) et D979^B dans la Saône-et-Loire (71). Néanmoins, au printemps 2007, elle était encore jalonnée en N79 dans l'Allier.
• Entre temps, le numéro RN488 avait été réattribué en 1978 à la route de Saint-Étienne N88 (échangeur de Terrenoire) à Saint-Étienne N82. Il s'agissait de l'ancien tracé de la RN88 dans le centre de Saint-Étienne avant la construction de la voie rapide vers Firminy, lui-même déviant le tracé historique dans la traversée de Terrenoire (RN88^A). En 2006, la partie urbaine de cet itinéraire est déclassée et seule la partie classée en voie express reste dans le réseau routier national.
• En 2016, un carrefour à feux est construit pour permettre un accès au centre commercial Monthieu par l'Est. La voie express est raccourcie d'un peu plus de 400 mètres.

Autour de la route

• Observaloire de Digoin et pont-canal.

Tracés historiques

Pénétrante Est de Saint-Étienne (actuel)

Chargement de la carte...

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Légende de la carte ou du tableau
En rouge	Tracé actuel.
En orange	Tracé déclassé en 2016.
En jaune	Tracé déclassé 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.

• Loire (42) / Saint-Étienne Métropole - N488
  •  N88 Saint-Étienne-Terrenoire
  •  N488
  •      A72   17 (demi-échangeur)
  •  
  •    Centre commercial Monthieu
  •     Centre commercial Monthieu (quart-échangeur)
  •   Rond-point Antoine Pinay

• Loire (42) / Saint-Étienne Métropole - VC
  • Saint-Étienne M3 M8 M11 M88 M88.1 D1082

De Chevagnes à Digoin (avant 1973)

Chargement de la carte...

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Diou\n\u003C/p\u003E\u003C/div\u003E","title":"Dompierre-sur-Besbre - Diou\n","link":"","strokeColor":"#F412F1","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":46.521433,"lon":3.681793},{"lat":46.521071,"lon":3.682125},{"lat":46.516952,"lon":3.688493},{"lat":46.516804,"lon":3.689174},{"lat":46.521463,"lon":3.709205},{"lat":46.526704,"lon":3.718539},{"lat":46.532561,"lon":3.738569},{"lat":46.533949,"lon":3.739454},{"lat":46.534078,"lon":3.739943},{"lat":46.533953,"lon":3.74233},{"lat":46.534119,"lon":3.743955},{"lat":46.533882,"lon":3.745559},{"lat":46.533266,"lon":3.74726}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EDiou - Digoin\n\u003C/p\u003E\u003C/div\u003E","title":"Diou - Digoin\n","link":"","strokeColor":"#F30A2B","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":46.533266,"lon":3.74726},{"lat":46.522277,"lon":3.775542},{"lat":46.512483,"lon":3.799714},{"lat":46.512383,"lon":3.800411},{"lat":46.512642,"lon":3.802241},{"lat":46.51245,"lon":3.803265},{"lat":46.509589,"lon":3.807036},{"lat":46.508097,"lon":3.812395},{"lat":46.508034,"lon":3.813758},{"lat":46.50744,"lon":3.814858},{"lat":46.507366,"lon":3.815566},{"lat":46.507159,"lon":3.816097},{"lat":46.506391,"lon":3.816767},{"lat":46.505439,"lon":3.818725},{"lat":46.496644,"lon":3.840149},{"lat":46.494904,"lon":3.844269},{"lat":46.490717,"lon":3.850217},{"lat":46.486057,"lon":3.856722},{"lat":46.485726,"lon":3.857482},{"lat":46.485549,"lon":3.858377},{"lat":46.48501,"lon":3.859992},{"lat":46.484197,"lon":3.862792},{"lat":46.48405,"lon":3.863597},{"lat":46.483983,"lon":3.864391},{"lat":46.483891,"lon":3.869723},{"lat":46.483577,"lon":3.873451},{"lat":46.482731,"lon":3.879481},{"lat":46.480843,"lon":3.883874},{"lat":46.48057,"lon":3.885226},{"lat":46.480297,"lon":3.886203},{"lat":46.479779,"lon":3.88763},{"lat":46.479621,"lon":3.888563},{"lat":46.479746,"lon":3.890714},{"lat":46.479562,"lon":3.891449},{"lat":46.47869,"lon":3.892855},{"lat":46.478524,"lon":3.893573},{"lat":46.478583,"lon":3.894303},{"lat":46.479351,"lon":3.896159},{"lat":46.479517,"lon":3.897232},{"lat":46.47948,"lon":3.898637},{"lat":46.47774,"lon":3.909649},{"lat":46.476743,"lon":3.91393},{"lat":46.476023,"lon":3.917561},{"lat":46.475845,"lon":3.919176},{"lat":46.476126,"lon":3.921043},{"lat":46.475723,"lon":3.92608},{"lat":46.475587,"lon":3.926541},{"lat":46.474689,"lon":3.927882},{"lat":46.47453,"lon":3.928338},{"lat":46.473717,"lon":3.933258},{"lat":46.473514,"lon":3.93638},{"lat":46.472162,"lon":3.939255},{"lat":46.469879,"lon":3.942232},{"lat":46.46959,"lon":3.943074},{"lat":46.469646,"lon":3.943884},{"lat":46.469919,"lon":3.944485},{"lat":46.47163,"lon":3.946599},{"lat":46.471929,"lon":3.947334},{"lat":46.473714,"lon":3.956512},{"lat":46.474153,"lon":3.96126},{"lat":46.474844,"lon":3.963422},{"lat":46.47671,"lon":3.970798},{"lat":46.476963,"lon":3.971106},{"lat":46.477268,"lon":3.97112},{"lat":46.479765,"lon":3.969923},{"lat":46.480119,"lon":3.969934},{"lat":46.480415,"lon":3.970084},{"lat":46.480716,"lon":3.970422},{"lat":46.481359,"lon":3.971794}]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":10,"layers":[],"controls":["pan","zoom","streetview","type","scale"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"locations":[{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EChevagnes\n\u003C/p\u003E\u003C/div\u003E","title":"Chevagnes\n","link":"","lat":46.611918,"lon":3.55458,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EDompierre-sur-Besbre\n\u003C/p\u003E\u003C/div\u003E","title":"Dompierre-sur-Besbre\n","link":"","lat":46.521433,"lon":3.681793,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EDiou\n\u003C/p\u003E\u003C/div\u003E","title":"Diou\n","link":"","lat":46.533266,"lon":3.74726,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EDigoin\n\u003C/p\u003E\u003C/div\u003E","title":"Digoin\n","link":"","lat":46.481359,"lon":3.971794,"icon":""}]}

Légende de la carte ou du tableau
En rouge	Tracé cédé à la RN79 en 1978.
En jaune	Tracé originel à Digoin déclassé tardivement le 12-1-1979.
En violet	Tronc commun avec la RN480.
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.

• Allier (03) - D779
  • Chevagnes
    •   D779 D973 Les Tardis
    • Les Grandes Chappes
    • Les Trois Chappes
  • Beaulon
    • Les Périauds
    • Les Tréfoux
    • Les Grands Auvergeats
  • Dompierre-sur-Besbre
    • Petteloup  A79   27 
    • Tivoli
    • Dompierre-Centre La Besbre D12 D55 D480
  •  Tronc commun avec la D779 (ex-N2079, ex-N79 et ex-N480), jusqu'à  A79   25 .
  • Diou
    • Diou Village Canal latéral à la Loire D15 D480
    • Boileau Rio de la Goutte
  • Pierrefitte-sur-Loire
    • Le Moulin du Theil
    • L'Enfer Canal latéral à la Loire
    • Les Degands
    • Pierrefitte Village
    • La Grande Croix
    • Le Goutey
  • Coulanges
    • Les Bourbiers
    • Coulanges Village
    • Les Lamouroux
    • Talenne
    • Canal latéral à la Loire
  • Molinet
    • La Micaudière
    • Le Péage
    • La Fontaine-Saint-Martin   D994
    • Canal latéral à la Loire
    • La Broche
  • Chassenard Chavanne
  • La Loire
• Allier (03) - N2079
• Saône-et-Loire (71) - N2079
  • Digoin Pont-Canal D979 (vers D982 D994)

Voie express

• Loire (42) - N488
  •  N88
  •  N488
  •     N88 Saint-Chamond, Lyon (demi-échangeur)
  •   Échangeur entre A72 et RN488 Vers Roanne, Clermont-Ferrand, Le Puy-en-Velay
  •  N488
  •    Centre commercial Monthieu

Sites Sara

• La RN488 sur Saratlas
• Photos de la RN488 sur France Autoroutes