LIEN - LICOM

Liaison Intercommunale d'Évitement Nord de Montpellier (LIEN)Liaison Intercommunale à l'Ouest de Montpellier (LICOM)
Accès au LIEN depuis à la D986 à Saint-Gély-du-Fesc. © G.E.
Localisation
Pays	France
Région	Occitanie
Département	Hérault (34)
Exploitation
Gestionnaire	Conseil Départemental de l'Hérault (CD34)
Caractéristiques actuelles
Axes	D68 - D185 - D986
Itinéraire	Contournement de Montpellier
Longueur	30 km
Historique
Dernière ouverture	2008

Tracé du LIEN. © CD 34

Tracé de la LICOM. © CD 34

Présentation

• La Liaison Intercommunale d'Évitement Nord de Montpellier ou Liaison Intercantonale d'Évitement Nord de Montpellier, plus connue sous son sigle, le LIEN, est une route départementale de contournement nord de l'agglomération montpelliéraine.

• Cette infrastructure partiellement en service doit relier à terme l'A709 (  28 ) au niveau de Vendargues à l'A750 (  62 ) au niveau de Bel-Air. Une fois bouclée, elle doit accueillir plus de 15.000 véhicules par jour.

• En dépit de ses caractéristiques modestes (chaussée à 2 voies non élargissable, large de 7 mètres, sans aucun créneau de dépassement et avec de nombreux carrefours à niveau), cette infrastructure aura coûté au final plus de 200 millions d'euros pour un parcours de 30 km.

• Le Conseil Départemental de l'Hérault (34) en assure la maîtrise d'ouvrage depuis 1988 et il devrait achever la totalité de l'infrastructure à l'horizon 2023, la totalité des recours étant purgée en 2019.

• Le LIEN sera prolongé à terme par la LICOM (Liaison Intercommunale à l'Ouest de Montpellier), route à 2 voies longue de 7 km qui ira de Saint-Georges-d'Orques (RN109   64 ) à Fabrègues (D613). Mise en service prévue après 2025.

• La LICOM est elle-même déjà prolongée au Sud-Ouest de Montpellier par la D185, liaison entre Fabrègues (D613) et Villeneuve-les-Maguelonne (D986) qui s'inscrit dans la continuité du contournement de Montpellier.

Historique et Planning

Calendrier général

• Années 1980 : Premières études
• 1988 : Lancement officiel du projet par le Conseil Départemental de l'Hérault
• 1992 : Mise en service de la déviation de Saint-Gély-du-Fesc
• 1997 : Ouverture (le 24 juin) entre Vendargues et Teyran
• 2002 : Ouverture de Teyran à Assas
• 2007 : Enquête publique pour la section du LIEN comprise entre Saint-Gély-du-Fesc et Bel-Air
• 2007 : Début des travaux entre Assas et Les Matelles
• 2008 : Ouverture (le 2 décembre) du LIEN entre Assas et Les Matelles (9 km, 45 M€)
• 2010 : Enquête publique (juin - juillet) sur le tracé entre Saint-Gély-du-Fesc et Bel-Air, les travaux sont annoncés à partir de 2012 pour une ouverture en 2015
• 2013 : l'arrêté de DUP pour le tracé entre Saint-Gély-du-Fesc et Bel-Air est annulé par le tribunal administratif de Montpellier en février 2013, après le recours d'une association de riverains
• 2014 : Nouvelle enquête publique (25 août - 30 septembre) sur le tracé entre Saint-Gély-du-Fesc et Bel-Air
• 2015 : Nouvel arrêté de Déclaration d'Utilité Publique (9 mars) pour la section entre Saint-Gély-du-Fesc et Bel-Air. Le tracé est identique à celui de la première Déclaration d'Utilité Publique. Les travaux sont annoncés à partir de 2019 pour une ouverture en 2022.
• Après 2025 : Reconfiguration du LIEN, entre l'A709 et Vendargues, suite à l'ouverture du contournement Sud de Montpellier de l'A9.
• Après 2025 : Ouverture annoncée de la LICOM entre Saint-Georges-d'Orques et Fabrègues.

Sections en chantier et en projet

• Saint-Gély-du-Fesc-Sud - Bel-Air : 7 km, 30 M€. Enquête publique à l'été 2010. Début prévisible des travaux en 2012. Ouverture annoncée pour 2023.

• Déviation de Vendargues (A709 - D610) : 2 km, 10 M€. Expropriations terminées à l'été 2007. Etudes en cours. Début des travaux après l'achèvement du Contournement Est de Montpellier.

Tracé

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003EAutoroute \u003Ca href=\"/wiki/Autoroute_fran%C3%A7aise_A709\" title=\"Autoroute fran\u00e7aise A709\"\u003EA709\u003C/a\u003E / Route nationale \u003Ca href=\"/wiki/Route_nationale_fran%C3%A7aise_113\" title=\"Route nationale fran\u00e7aise 113\"\u003EN113\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Autoroute A709 / Route nationale N113\n","link":"","lat":43.6547699999999991860022419132292270660400390625,"lon":3.993272999999999850473386686644516885280609130859375,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoute d\u00e9partementale \u003Ca href=\"/wiki/Route_nationale_fran%C3%A7aise_110\" title=\"Route nationale fran\u00e7aise 110\"\u003ED610\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Route d\u00e9partementale D610\n","link":"","lat":43.66827500000000128466126625426113605499267578125,"lon":3.975119999999999986783905114862136542797088623046875,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoute d\u00e9partementale \u003Ca href=\"/wiki/Route_nationale_fran%C3%A7aise_586\" title=\"Route nationale fran\u00e7aise 586\"\u003ED986\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Route d\u00e9partementale D986\n","link":"","lat":43.708585999999996829501469619572162628173828125,"lon":3.81826400000000010237499736831523478031158447265625,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoute d\u00e9partementale \u003Ca href=\"/wiki/Route_nationale_fran%C3%A7aise_586\" title=\"Route nationale fran\u00e7aise 586\"\u003ED986\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Route d\u00e9partementale D986\n","link":"","lat":43.67370700000000027785063139162957668304443359375,"lon":3.81912200000000012778400559909641742706298828125,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAutoroute \u003Ca href=\"/wiki/Autoroute_fran%C3%A7aise_A750\" title=\"Autoroute fran\u00e7aise A750\"\u003EA750\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Autoroute A750\n","link":"","lat":43.6336519999999978836058289743959903717041015625,"lon":3.75672300000000003450395524851046502590179443359375,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EAutoroute \u003Ca href=\"/wiki/Autoroute_fran%C3%A7aise_A750\" title=\"Autoroute fran\u00e7aise A750\"\u003EA750\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Autoroute A750\n","link":"","lat":43.6102589999999992187440511770546436309814453125,"lon":3.803028999999999992809307514107786118984222412109375,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoute d\u00e9partementale \u003Ca href=\"/wiki/Route_nationale_fran%C3%A7aise_113\" title=\"Route nationale fran\u00e7aise 113\"\u003ED613\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Route d\u00e9partementale D613\n","link":"","lat":43.55962000000000244881448452360928058624267578125,"lon":3.797750000000000181188397618825547397136688232421875,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoute d\u00e9partementale \u003Ca href=\"/wiki/Route_nationale_fran%C3%A7aise_112\" title=\"Route nationale fran\u00e7aise 112\"\u003ED612\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Route d\u00e9partementale D612\n","link":"","lat":43.54518900000000058980731409974396228790283203125,"lon":3.82350000000000012079226507921703159809112548828125,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ERoute d\u00e9partementale \u003Ca href=\"/wiki/Route_nationale_fran%C3%A7aise_586\" title=\"Route nationale fran\u00e7aise 586\"\u003ED986\u003C/a\u003E\n\u003C/p\u003E\u003C/div\u003E","title":"Route d\u00e9partementale D986\n","link":"","lat":43.540086999999999761712388135492801666259765625,"lon":3.89748599999999978393816491006873548030853271484375,"icon":""}]}

Légende de la carte
En rouge	Sections du contournement de Montpellier en service.
En orange	Sections en projet et/ou en travaux du LIEN.
En vert	Tracé de la LICOM en projet.
Pour plus d'informations sur les sources cartographiques, consulter cet article.
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• Le tracé évite largement Montpellier par l'Est, le Nord et l'Ouest. L'objectif est d'assurer une desserte fine des communes péri-urbaines, en déchargeant la RD65 de son trafic de transit.

• La route comporte donc peu de points de croisements, si ce n'est avec les principales routes convergeant sur Montpellier. Le tracé retenu comporte majoritairement 2 voies et est partiellement dénivelé dans sa partie Est.

• La route a été conçue pour ne pas attirer trop de trafic de transit dans la garrigue et pour ne pas favoriser l'étalement urbain, en passant dans des zones peu urbanisées.

Parcours

• Hérault (34) - D68
  • Connexion avec l'autoroute A709 en projet, liaison actuellement assurée par la D65
  • Section en service entre Castries et Saint-Gély-du-Fesc
  •   (Les Cousteliers) : Villes desservies : D65 Saint-Aunès, Lunel, Vers  A709 (Nîmes, Lyon, Marseille, Barcelone), D610 Castelnau-le-Lez, Vendargues, Castries, Sommières, Alès
  •  D68
  •     (Teyran) D21 : Villes desservies : Teyran, Montaud
  •     (Assas) : Villes desservies : Assas, Guzargues
  •     (Le Triadou) D17 : Villes desservies : Prades-le-Lez, Le Triadou, Saint-Mathieu-de-Tréviers
  •  D68
  •   (Saint-Gély-du-Fesc Nord) D986 : Villes desservies : Saint-Gély-du-Fesc, Les Matelles, Saint-Martin-de-Londres, Ganges
  •  D986
  •     (Saint-Gély-du-Fesc Est) : Villes desservies : Saint-Gély-du-Fesc, Saint-Clément-de-Rivière (demi-échangeur)
  •     (Saint-Gély-du-Fesc Sud) D986 : Villes desservies : Saint-Gély-du-Fesc, Montpellier (trois-quarts-échangeur)
  •  D986
  • Sortie obligatoire et fin provisoire du LIEN
  • Section en projet entre Saint-Gély-du-Fesc et Bel-Air
  •  D68
  •     (Saint-Gély-du-Fesc Sud) D986^E1 : Ville desservie : Saint-Gély-du-Fesc
  •     (Grabels) : Ville desservie : Grabels
  •  D68
  • Connexion avec l'autoroute A750 en service
  •   (Bel-Air) : Villes desservies : A750   62  Montpellier, Lodève, Millau, D619 Bel-Air, Vailhauquès

Pictogrammes utilisés dans la description
	Sortie d'une voie non autoroutière.		Rocade / Périphérique.
	Sortie d'une autoroute à péage en service.		Pont.
	Sortie d'une autoroute gratuite en service.		Tunnel.
	Sortie en construction.		Aire de repos.
	Sortie fermée.		Aire de service.
	Échangeur entre 2 voies non autoroutières.		Radar automatique.
	Échangeur entre 2 autoroutes à péage en service.		Gare.
	Échangeur entre 2 autoroutes gratuites en service.		Aéroport.
	Échangeur entre une autoroute à péage en service et une autoroute gratuite en service.		Col.
	Échangeur entre une autoroute à péage en service et une autoroute en construction.		Vitesse maximale autorisée.
	Échangeur entre une autoroute gratuite et une autoroute en construction.		Pente dangereuse.
	Début d'une autoroute.		Route à double sens.
	Fin d'une autoroute.		Feux tricolores.
	Début d'une voie express.		Carrefour giratoire.
	Fin d'une voie express.		Route prioritaire.
	Créneau de dépassement à 2x2 voies hors voie express.		Route prioritaire ponctuellement.
	Créneau de dépassement à 3 voies.		Limites de départements et/ou de régions.

Voir Aussi

Sites Sara

•  [Forum Sara] Fil du Forum Sara sur le LIEN

•  [Autorout.free.fr] Plan futur des contournements de l'agglomération montpelliéraine

Sites externes

• Site du CD34 sur le LIEN
• Le LIEN sur le site de la CCI de Montpellier