Route départementale française D21 (34)

Route départementale D21 (34)
Localisation
Pays	France
Département	Hérault (34)
Caractéristiques actuelles
Itinéraire	Mas-Martin - Carnon-Plage
Longueur	36 km

Présentation

• La route départementale D21 (34), ou RD21 (34), est une route départementale de l'Hérault (34) qui relie Mas-Martin à Carnon-Plage via Montpellier.
• Elle est prolongée dans le Gard (30) par la D168.
• Dans l'agglomération de Montpellier, cet axe correspond à l'avenue de la Mer. Il côtoie désormais la ligne 3 du Tramway de Montpellier.

Historique

Généralités

• Depuis le 1^er janvier 2017, la partie de cette route qui se situe sur le territoire de Montpellier Méditerranée Métropole a été reclassée en tant que route métropolitaine en conservant son ancienne dénomination, soit M21.

Aménagements

• La D21 a été recalibrée à l'Ouest de Jacou en 1986.
• Elle a été rectifiée entre Montpellier et Carnon. Au projet initial d'autoroute a été substitué un large boulevard urbain.
• La section entre Montpellier et la M172 a été mise en service en 1955, tandis que son prolongement jusqu'à la mer est réalisé en 1963.

Autour de la route

• Montpellier.

Tracé

Chargement de la carte...

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Légende de la carte ou du tableau
En jaune	Tracé de la D21 (34).
En bleu ciel	Tracé de la M21 (34).
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.

• Gard (30) - D168
• Hérault (34) - D21
  • Mas-Martin
  • Saint-Bauzille-de-Montmel
  • Montaud
  • Les Mazes
  • Malrives D68
  • Teyran
• Hérault (34) / Montpellier Méditerranée Métropole - M21
  • M67
  • Jacou
  • Clapiers
  • Castelnau-le-Lez M65 M613
  • Montpellier M5 M17 M66 M612 M986
  • Boirargues
  • Pérols M66
• Hérault (34) - D21
  • Carnon-Plage D62 D62^E2