Route départementale française D21 (77)

Route départementale D21 (77)
La D21 (77) à Villeneuve-Saint-Denis en direction de Roissy-en-Brie. © Google Maps
Localisation
Pays	France
Département	Seine-et-Marne (77)
Caractéristiques actuelles
Itinéraire	D603 - N104 (Sammeron - Pontault-Combault)
Longueur	48 km

Présentation

• La route départementale D21 (77), ou RD21 (77), est une route départementale de Seine-et-Marne (77) qui relie Sammeron à Pontault-Combault.
• Elle longe l'A4 sur la majeure partie de son parcours.
• Elle possède plusieurs annexes :
  • La D21^A dessert Sept-Sorts à partir de la D603.
  • La D21^E1 est un embranchement vers la D10 desservant les hameaux de la Dénicherie et de la Route, entre Villeneuve-Saint-Denis et Favières.
  • La D1021 dessert la gare de Roissy-en-Brie et plusieurs quartiers résidentiels au Nord de l'agglomération. Elle est mise en service par étapes en 1977 (au Nord), en 1978 (ouvrage sous les voies ferrées), en 1976 (au Centre) et achevée en 1990 (raccordement direct au Sud sur la Place Robert Schuman).
  • Son tracé laisse penser qu'elle devait s'intégrer dans une déviation Nord de l'agglomération. Cette opération n'a pas été portée à son terme.

Historique

Axe Sammeron - Pontault-Combault (D21)

• Giratoire à l'Ouest de La Haute-Maison (D228) : 2009.
• Rectification à l'Ouest du Bois des Glands à Crégy-la-Chapelle : mise en service en 1980, déclassement du délaissé pris en considération le 17 décembre 1980.
• Giratoire de Voulangis (D1036) : 2008.
• Déviation de Villeneuve-le-Comte : voir D231. Déclassement de sa traversée pris en considération le 19 novembre 1984 puis le 7 septembre 1988, approuvé le 12 décembre 1996, effectif le 3 mars 1997.
• Rectification à l'Ouest de Villeneuve-Saint-Denis : 1993.
• Giratoire de Pontcarré (D471) : mise en service définitive le 6 octobre 1998.
• Traversée de Roissy-en-Brie :
  • Giratoire à l'Est de Roissy-en-Brie (D35) : 1990.
  • Liaison Place de Barmstedt - Rue de Monthéty (boulevard urbain, sens Ouest-Est uniquement) : 1986, raccordement à l'Ouest mis en service en 1990.
  • Giratoire de la Place de Barmstedt : 1990.
  • Giratoire de la Rue de Monthéty : 1990.
  • Giratoire de la Place Robert Schuman : 1986.
• Giratoires d'accès à la RN104 (sortie 16) à Pontault-Combault : 1994 à l'Est, 1987 à l'Ouest.

Traversée de Sept-Sorts (D21^A)

• Rectification au Sud de la D603 : opération prise en considération le 25 janvier 1973, mise en service en 1978, déclassement du délaissé pris en considération le 25 mars 1983.
• Déclassement partiel en traversée de Sept-Sorts : opération prise en considération le 19 mai 1995.

Autour de la route

• La Marne, le Grand Morin
• Forêts de Crécy et de Ferrières

Tracé

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003ED1021\n\u003C/p\u003E\u003C/div\u003E","title":"D1021\n","link":"","strokeColor":"#1EFB07","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.789616,"lon":2.641729},{"lat":48.789994,"lon":2.642072},{"lat":48.790439,"lon":2.642641},{"lat":48.792411,"lon":2.644991},{"lat":48.793097,"lon":2.645634},{"lat":48.79391,"lon":2.646267},{"lat":48.796694,"lon":2.648542},{"lat":48.797189,"lon":2.649175},{"lat":48.797366,"lon":2.649529},{"lat":48.797578,"lon":2.65013},{"lat":48.797698,"lon":2.650913},{"lat":48.797719,"lon":2.651546},{"lat":48.797641,"lon":2.652179},{"lat":48.797507,"lon":2.652876},{"lat":48.796963,"lon":2.65631}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003Eex-D21\u003Csup\u003EA\u003C/sup\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"ex-D21A\n","link":"","strokeColor":"#FFFFFF","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.94082399901867,"lon":3.1023878675741967},{"lat":48.94071226937497,"lon":3.102341280553076},{"lat":48.94022601540481,"lon":3.102115974995825},{"lat":48.93997231580069,"lon":3.102019415471289},{"lat":48.939722138539345,"lon":3.1019335847828122},{"lat":48.93951377594226,"lon":3.1018963369231756},{"lat":48.93910150754775,"lon":3.1018480571609075},{"lat":48.93876675720105,"lon":3.1018426927428777},{"lat":48.9383487878358,"lon":3.1018411007220825},{"lat":48.93801755619366,"lon":3.10190547373844},{"lat":48.93777089290459,"lon":3.1020127620990356},{"lat":48.93764403702416,"lon":3.1021146860416016},{"lat":48.93756299004289,"lon":3.1022970762546143},{"lat":48.937545371116485,"lon":3.102549203902014},{"lat":48.93750660945656,"lon":3.102747687369116}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003Eex-D231 et ex-D21 Villeneuve-le-Comte\n\u003C/p\u003E\u003C/div\u003E","title":"ex-D231 et ex-D21 Villeneuve-le-Comte\n","link":"","strokeColor":"#FFFFFF","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.81728017368859,"lon":2.820606528736045},{"lat":48.817153011874495,"lon":2.821105419612815},{"lat":48.816958736257895,"lon":2.821947633243491},{"lat":48.81676575755365,"lon":2.8229073162981955},{"lat":48.816483172406656,"lon":2.8242323275515524},{"lat":48.81622784145588,"lon":2.825467644577744},{"lat":48.81603709460959,"lon":2.82630985820842},{"lat":48.815821620447245,"lon":2.8273290976340792},{"lat":48.81575450535505,"lon":2.8276992424781344},{"lat":48.81569092255324,"lon":2.8278440817649386},{"lat":48.815548534500074,"lon":2.8279927653772408},{"lat":48.81533659064299,"lon":2.8281215114099556},{"lat":48.81514584040548,"lon":2.8282234353525215},{"lat":48.81500101103673,"lon":2.8283468169672066},{"lat":48.81489857049884,"lon":2.8285077495081},{"lat":48.81473712389064,"lon":2.8290104167766694},{"lat":48.81464174772212,"lon":2.829321553022397},{"lat":48.81446865717509,"lon":2.829868723661435},{"lat":48.814338838872644,"lon":2.8298137383766298},{"lat":48.8141422154086,"lon":2.829746710649581},{"lat":48.81412455295929,"lon":2.8298915499363853},{"lat":48.81412366983666,"lon":2.8300457769547416},{"lat":48.814134267307175,"lon":2.83026705919847},{"lat":48.8141413322863,"lon":2.830633096779276},{"lat":48.81419607798565,"lon":2.8314149308857317},{"lat":48.814238267941406,"lon":2.8319624733576143},{"lat":48.81430968684229,"lon":2.8329796803018903},{"lat":48.81433008138087,"lon":2.8335907212545264},{"lat":48.81435922429946,"lon":2.8339823237707007},{"lat":48.814412063952005,"lon":2.8345050545415695},{"lat":48.81447653149225,"lon":2.8351367147645767},{"lat":48.814564275431096,"lon":2.836057335873723},{"lat":48.81466219026992,"lon":2.8370790892212128},{"lat":48.81477667637128,"lon":2.838439233184671},{"lat":48.81493242227207,"lon":2.8401053687873956},{"lat":48.815038084722055,"lon":2.8412077566925165},{"lat":48.815116,"lon":2.841918}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ED21 d\u00e9molie Villeneuve-le-Comte\n\u003C/p\u003E\u003C/div\u003E","title":"D21 d\u00e9molie Villeneuve-le-Comte\n","link":"","strokeColor":"#408080","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":48.817042972027096,"lon":2.810118406481883},{"lat":48.81699352001482,"lon":2.810815780825755},{"lat":48.8169264064916,"lon":2.811467557616374},{"lat":48.816852206011866,"lon":2.812073148312404},{"lat":48.8168009876605,"lon":2.812397695603206},{"lat":48.81673034157275,"lon":2.8127651582382462},{"lat":48.81661051210858,"lon":2.8133645683226938},{"lat":48.81646568697127,"lon":2.8140994935927743},{"lat":48.816370314091344,"lon":2.814587655633485},{"lat":48.816257279332056,"lon":2.8151455551085824},{"lat":48.81607712965762,"lon":2.816003861993348},{"lat":48.81585812329914,"lon":2.817049923509156},{"lat":48.81566031028199,"lon":2.818101349442994},{"lat":48.81546956127624,"lon":2.818981113999879},{"lat":48.81540597811305,"lon":2.819378080934083},{"lat":48.81541304291293,"lon":2.819571199983155},{"lat":48.815444834500134,"lon":2.8197428613601083},{"lat":48.81551195000693,"lon":2.8198823362288827},{"lat":48.8156143892914,"lon":2.8199949890075082},{"lat":48.81581220248973,"lon":2.8200432687697763},{"lat":48.816115772515666,"lon":2.8201344638762826},{"lat":48.81658204057124,"lon":2.8202632099089975},{"lat":48.816938803351704,"lon":2.8203812271056528},{"lat":48.81719312774407,"lon":2.8205153375563974},{"lat":48.81728017368859,"lon":2.820606528736045}]},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ED21\u003Csup\u003EA\u003C/sup\u003E d\u00e9molie\n\u003C/p\u003E\u003C/div\u003E","title":"D21A 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class=\"mw-parser-output\"\u003E\u003Cp\u003EPontault-Combault\n\u003C/p\u003E\u003C/div\u003E","title":"Pontault-Combault\n","link":"","lat":48.780016,"lon":2.613137,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESammeron\n\u003C/p\u003E\u003C/div\u003E","title":"Sammeron\n","link":"","lat":48.9468215377842,"lon":3.091752233051994,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoissy-en-Brie\n\u003C/p\u003E\u003C/div\u003E","title":"Roissy-en-Brie\n","link":"","lat":48.796963,"lon":2.65631,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EFavi\u00e8res\n\u003C/p\u003E\u003C/div\u003E","title":"Favi\u00e8res\n","link":"","lat":48.79333,"lon":2.768469,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESept-Sorts\n\u003C/p\u003E\u003C/div\u003E","title":"Sept-Sorts\n","link":"","lat":48.945507679640244,"lon":3.1029267965230245,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESept-Sorts\n\u003C/p\u003E\u003C/div\u003E","title":"Sept-Sorts\n","link":"","lat":48.93750660945656,"lon":3.102747687369116,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ESept-Sorts\n\u003C/p\u003E\u003C/div\u003E","title":"Sept-Sorts\n","link":"","lat":48.94535154098604,"lon":3.104167877884265,"icon":""}]}

Légende de la carte ou du tableau
En jaune	Tracé de la D21 (77).
En vert	Tracé des annexes.
En violet	Troncs communs avec d'autres routes départementales.
En blanc	Tracé déclassé dans la voirie communale des villes traversées.
En gris	Tracé détruit.
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.

• Seine-et-Marne (77) - D21
  • Sammeron
    •   D603 
    • Les Avaux
    • Narmont
  • Signy-Signets
    • D114^P vers Jouarre
    • La Barbèterie
  • Pierre-Levée
    • Montebise
    • Les Savarts
    •  Court tronc commun avec la D19, jusqu'à Pierre-Levée.
    • Pierre-Levée-Village
    • Bois des Marnières
  • La Haute-Maison
    • La Grande Rue
    •   D228
  • Sancy
    • Mauperthuis
    • Montansou
    • Mont Denis
  • Crécy-la-Chapelle
    • Bois des Glands
    • Rû de Vaudessard
    • La Chapelle-sur-Crécy
    •  Tronc commun avec la D235 et la D934.
    •  Tronc commun avec la D20, jusqu'à Tigeaux.
  • Tigeaux
    • Fort à Faire Rû du Cul d'Eau
    •  Forêt domaniale de Crécy
    • Grand Buisson
  • Voulangis
    •   D1036
    • Croix de Tigeaux
  • Villeneuve-le-Comte (contournement par l'Est)
    •  Court tronc commun avec la D231.
    • La Lignière
  • Villeneuve-Saint-Denis
    • Bel-Air
    • Villeneuve-Saint-Denis
    • Pré Boyau Rû du Gibet
    • D21^E1 vers D10
    •  Forêt régionale de Ferrières
  • Favières
    • La Sablonnière D10
    • Carrefour des Buronnières
  • Pontcarré

    

    Signalisation sur la D21 (77) à Pontcarré en direction de Crégy-la-Chapelle.
    © Google Maps

    • Les Sept Arpents   D471
    • Pontcarré-Centre
  • Roissy-en-Brie
    •   D35
    • Les Jondelles
    • Le Manoir
    • L'Avenir
    •  
    • École
    • Place de Barmstedt  
    • La Ferme d'Ayau
    • Le Verger  
    • Place Robert Schuman   D1021 vers Roissy-en-Brie-Centre
    • Le Ru du Moulin
    • La Frette
  • Pontault-Combault
    • Cimetière
    • Pontillault    N104   16  Francilienne
    • Pontault    N104   16  Francilienne

      

      Signalisation sur la D21^A (77) au Nord de Sept-Sorts.
      © Google Maps

• Seine-et-Marne (77) - D21^A
  • Sept-Sorts
    • D603  Zone Industrielle du Hainault
    • Sept-Sorts-Village

• Seine-et-Marne (77) - D21^E1
  • Villeneuve-Saint-Denis

    

    Signalisation sur la D21^E (77) à Villeneuve-Saint-Denis en direction de Favières.
    © Google Maps

    • D21  Forêt régionale de Ferrières
    • La Dénicherie
  • Favières
    • Maison Forestière du Gros Hêtre
    • La Route
    • Hermières D10

• Seine-et-Marne (77) - D1021
  • Roissy-en-Brie

    

    Signalisation sur la D1021 (77) à Roissy-en-Brie.
    © Google Maps

    •   D21 Place Robert Schuman
    • Le Grand Étang Le Morbras  
    • Centre commercial  
    • Le Pomier Picard