{"id":5308,"date":"2022-10-27T15:56:39","date_gmt":"2022-10-27T13:56:39","guid":{"rendered":"https:\/\/www.systra.com\/france\/le-contournement-de-donges-a-ete-inaugure\/"},"modified":"2026-04-07T15:47:26","modified_gmt":"2026-04-07T13:47:26","slug":"le-contournement-de-donges-a-ete-inaugure","status":"publish","type":"post","link":"https:\/\/www.systra.com\/france\/news\/le-contournement-de-donges-a-ete-inaugure\/","title":{"rendered":"Le contournement de Donges a \u00e9t\u00e9 inaugur\u00e9"},"content":{"rendered":"\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>La r\u00e9alisation du contournement des sites industriels de Donges \u00e9tait n\u00e9cessaire pour s\u00e9curiser une ligne fr\u00e9quent\u00e9e par 1,5 million de voyageurs par an. En effet, l\u2019ancien trac\u00e9 traversait une zone de 350 hectares de superficie domin\u00e9e par la raffinerie TotalEnergies de Donges, la deuxi\u00e8me plus grande de France, class\u00e9e comme site industriel Seveso III \u00ab seuil haut \u00bb.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile is-image-fill\" style=\"grid-template-columns:30% auto\"><figure class=\"wp-block-media-text__media\" style=\"background-image:url(https:\/\/www.systra.com\/wp-content\/uploads\/2022\/06\/traube_didier.jpg);background-position:43% 32%\"><img decoding=\"async\" src=\"https:\/\/www.systra.com\/wp-content\/uploads\/2022\/06\/traube_didier.jpg\" alt=\"\" class=\"wp-image-7741265 size-full\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<blockquote class=\"wp-block-quote is-style-bg-light-dusty-blue is-layout-flow wp-block-quote-is-layout-flow\"><p>Le contournement de Donges est un projet majeur pour les \u00e9quipes de SYSTRA France : c\u2019est une premi\u00e8re dans la mesure o\u00f9 SNCF R\u00e9seau nous a confi\u00e9 une ma\u00eetrise d\u2019\u0153uvre compl\u00e8te, tous m\u00e9tiers confondus, sur un tron\u00e7on de ligne exploit\u00e9. Nous avons \u00e9t\u00e9 ma\u00eetre d&#8217;\u0153uvre des \u00e9tudes d\u00e8s ao\u00fbt 2016, puis de la quasi-int\u00e9gralit\u00e9 du chantier, avec des modalit\u00e9s d\u2019intervention complexes et notamment des travaux continus, sous interruption de circulation et 24 heures sur 24. <\/p><cite><strong>Didier Traube<\/strong>, Pr\u00e9sident de SYSTRA France<\/cite><\/blockquote>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide has-media-on-the-right is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" src=\"https:\/\/www.systra.com\/wp-content\/uploads\/2022\/10\/vue-aerienne-halte-1024x725.jpg\" alt=\"\" class=\"wp-image-9440589 size-full\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p>D\u00e9sormais, l\u2019exposition de la voie ferr\u00e9e aux risques industriels est r\u00e9duite et la desserte SNCF de la ville de Donges est am\u00e9lior\u00e9e gr\u00e2ce \u00e0 une halte multimodale accessible aux PMR (personnes \u00e0 mobilit\u00e9 r\u00e9duite) \u00e0 5 minutes du centre-ville, contre 20 minutes auparavant. De surcro\u00eet, la lib\u00e9ration des emprises de l\u2019ancienne ligne permet aux sites industriels de r\u00e9organiser leurs implantations.<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">La pr\u00e9servation environnementale au c\u0153ur du projet<\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>La proximit\u00e9 imm\u00e9diate de nombreuses zones humides, de marais et de deux sites Natura 2000* a amen\u00e9 \u00e0 int\u00e9grer une forte dimension environnementale au projet. Au total, 17 hectares de terrains, r\u00e9partis sur 17 sites, ont \u00e9t\u00e9 d\u00e9di\u00e9s \u00e0 la compensation environnementale, pour reconstituer des habitats favorables aux esp\u00e8ces, avec :<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img decoding=\"async\" src=\"https:\/\/www.systra.com\/wp-content\/uploads\/2022\/10\/donges-envt-1024x624.jpg\" alt=\"\" class=\"wp-image-9469251 size-full\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<ul class=\"wp-block-list\"><li>Un nouveau g\u00eete \u00e0 chiropt\u00e8res (chauves-souris) avec transfert d&#8217;esp\u00e8ces depuis l&#8217;ancien b\u00e2timent \u00e0 d\u00e9molir ;<\/li><li>Des habitats pour les esp\u00e8ces prot\u00e9g\u00e9es (reptiles, oiseaux, h\u00e9rissons\u2026) ;<\/li><li>La cr\u00e9ation et\/ou la r\u00e9habilitation de zones humides sanctuaris\u00e9es, avec transfert de mares.<\/li><\/ul>\n<\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Par ailleurs, l\u2019int\u00e9gration paysag\u00e8re du projet a \u00e9t\u00e9 assur\u00e9e par la cr\u00e9ation de 7 merlons** \u00e0 proximit\u00e9 des voies, domin\u00e9s par des arbres hautes-tiges (ch\u00eanes, fr\u00eanes, saules), qui sont autant d\u2019\u00e9crans visuels pour les riverains et qui agissent pour r\u00e9tablir la trame \u00e9cologique et favoriser le d\u00e9veloppement de la biodiversit\u00e9 locale.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-small-font-size\">*Natura 2000 : site naturel ou semi-nature de grande valeur patrimoniale par la faune et la flore qu&#8217;il contient, recens\u00e9 et rassembl\u00e9 par le r\u00e9seau Natura 2000 au niveau europ\u00e9en.<\/p>\n\n\n\n<p class=\"has-small-font-size\">**Merlon : c&#8217;est un ouvrage \u00e9difi\u00e9 pour r\u00e9duire les bruits ou les nuisances en servant d&#8217;\u00e9cran visuel.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">UN PROJET CL\u00c9 EN MAIN POUR SNCF R\u00c9SEAU<\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>D\u00e8s les premi\u00e8res phases d\u2019\u00e9tudes, SYSTRA a pris en compte toutes les dimensions du projet : acquisitions fonci\u00e8res, d\u00e9voiement des nombreux r\u00e9seaux pr\u00e9sents dans la zone, suivi de la concertation et de l\u2019enqu\u00eate publique du projet, et production de visuels afin d\u2019aider les riverains et les autorit\u00e9s \u00e0 se projeter dans la future ligne r\u00e9alis\u00e9e.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-vertically-aligned-bottom is-image-fill\" style=\"grid-template-columns:23% auto\"><figure class=\"wp-block-media-text__media\" style=\"background-image:url(https:\/\/www.systra.com\/wp-content\/uploads\/2022\/10\/portrait_antoine_cypierre_web-3.png);background-position:44% 40%\"><img decoding=\"async\" src=\"https:\/\/www.systra.com\/wp-content\/uploads\/2022\/10\/portrait_antoine_cypierre_web-3.png\" alt=\"\" class=\"wp-image-9451254 size-full\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<blockquote class=\"wp-block-quote is-style-bg-light-dusty-blue is-layout-flow wp-block-quote-is-layout-flow\"><p>Ce projet, complexe tant par sa sp\u00e9cificit\u00e9 g\u00e9ographique que par la multiplicit\u00e9 des interfaces rencontr\u00e9es, constitue une avanc\u00e9e majeure pour l\u2019ensemble des acteurs du territoire, pour la s\u00e9curisation des d\u00e9placements des voyageurs sur la ligne reliant Nantes \u00e0 Saint-Nazaire, pour le d\u00e9veloppement \u00e9conomique de la raffinerie TotalEnergies, et pour les Dongeois, dont l\u2019acc\u00e8s \u00e0 la nouvelle halte se retrouve grandement am\u00e9lior\u00e9. C\u2019est donc un projet au service de tous, qui illustre la confiance du client envers nos \u00e9quipes. <\/p><cite><strong>Antoine Cypierre<\/strong>, chef de projet SYSTRA France<\/cite><\/blockquote>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Lanc\u00e9e en 2020, la supervision des travaux, men\u00e9s de jour comme de nuit, s\u2019est r\u00e9v\u00e9l\u00e9e particuli\u00e8rement exigeante, la proximit\u00e9 de la raffinerie n\u00e9cessitant une vigilance de tous les instants : aux exigences et habilitations propres aux travaux sous domaine ferroviaire exploit\u00e9, d\u00e9livr\u00e9es par notre centre de formation SYSTRA Acad\u00e9mie de Poitiers, sont venues se greffer les exigences et habilitations de TotalEnergies (formations aux risques p\u00e9trochimiques, \u00e9quipements de protection individuelles sp\u00e9cifiques).<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Durant deux ann\u00e9es, la construction de la ligne nouvelle en site propre s\u2019est d\u00e9roul\u00e9e en parall\u00e8le du remaniement des installations de l\u2019ancienne ligne exploit\u00e9e, notamment sur les parties voie, installations de traction \u00e9lectrique et syst\u00e8mes : \u00e0 la cl\u00e9, plus de 400 nuits, trois op\u00e9rations \u00ab coups de poing \u00bb et une coupure des circulations de 14 jours afin de mettre en service la nouvelle ligne. Le projet s\u2018ach\u00e8vera au printemps 2023 avec la fin des op\u00e9rations de d\u00e9pose de l\u2019ancienne voie et la finalisation des mesures environnementales compensatoires.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Rep\u00e8res \u2013 Contournement de Donges<\/h2>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<ul class=\"wp-block-list\"><li> 4,5 km de double voies nouvelles et \u00e9lectrifi\u00e9es, y compris les raccordements au R\u00e9seau ferr\u00e9 national<\/li><li>60 trains\/jour, dont 14 TER Pays-de-la-Loire<\/li><li>1 nouvelle halte ferroviaire multimodale et accessible aux PMR avec parc relais<\/li><li>6 ans de projet dont 3 de construction<\/li><li>2 ponts-routes<\/li><li>4 ponts-rails<\/li><li>18 abris faunistiques<\/li><li> 450 arbres plant\u00e9s notamment sur 7 merlons<\/li><li>13 bassins d\u2019assainissement<\/li><li>17 ha de zone de compensation environnementale cr\u00e9\u00e9s<\/li><\/ul>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>La r\u00e9alisation du contournement des sites industriels de Donges \u00e9tait n\u00e9cessaire pour s\u00e9curiser une ligne fr\u00e9quent\u00e9e par 1,5 million de voyageurs par an. En effet, l\u2019ancien trac\u00e9 traversait une zone de 350 hectares de superficie domin\u00e9e par la raffinerie TotalEnergies de Donges, la deuxi\u00e8me plus grande de France, class\u00e9e comme site industriel Seveso III \u00ab [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[25289],"tags":[],"class_list":["post-5308","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - 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