{"id":3629,"date":"2025-12-07T18:35:03","date_gmt":"2025-12-07T18:35:03","guid":{"rendered":"https:\/\/infos-media-nantes.fr\/?p=3629"},"modified":"2025-12-07T18:35:04","modified_gmt":"2025-12-07T18:35:04","slug":"pont-anne-de-bretagne-ecologique-2027","status":"publish","type":"post","link":"https:\/\/infos-media-nantes.fr\/pont-anne-de-bretagne-ecologique-2027\/","title":{"rendered":"Pourquoi le futur pont Anne-de-Bretagne sera l\u2019un des plus \u00e9cologiques d\u2019Europe ?"},"content":{"rendered":"\n<article id=\"imn-anne-bretagne\" style=\"font-family:'Inter',sans-serif; color:#222; line-height:1.6; max-width:1100px; margin:auto; padding:20px;\">\n\n<header>\n\n  <p>\n    Lieu strat\u00e9gique de franchissement de la Loire, le futur pont Anne-de-Bretagne, dont l\u2019ouverture est pr\u00e9vue fin 2027, deviendra le plus large\n    d\u2019Europe. Con\u00e7u comme un \u00ab pont-place \u00bb, aussi vaste qu\u2019un terrain de football, l\u2019ouvrage incarne une nouvelle mani\u00e8re d\u2019imaginer la transition\n    \u00e9cologique : r\u00e9emploi de l\u2019existant, mat\u00e9riaux biosourc\u00e9s, espaces verts en hauteur, mobilit\u00e9s d\u00e9carbon\u00e9es et int\u00e9gration paysag\u00e8re. Autant\n    d\u2019\u00e9l\u00e9ments qui en font l\u2019un des projets m\u00e9tropolitains les plus ambitieux en mati\u00e8re d\u2019\u00e9coconstruction.\n  <\/p>\n<\/header>\n\n<section>\n  <h2>Un ouvrage pens\u00e9 pour les mobilit\u00e9s douces<\/h2>\n  <p>\n    Le projet place la question des usages au c\u0153ur de sa conception. Selon l\u2019architecte Dietmar Feichtinger, \u00ab chaque projet doit commencer par la \n    question de son utilit\u00e9 \u00bb. Ici, il s\u2019agit de cr\u00e9er un v\u00e9ritable espace public suspendu, un lieu de rencontre o\u00f9 pi\u00e9tons, cyclistes et usagers des \n    transports en commun cohabitent sans conflit.\n  <\/p>\n  <p>\n    Deux nouvelles lignes de tramway (L6 et L7), de larges pistes cyclables et de vastes cheminements pi\u00e9tons structureront le pont. \n    Au total, <strong>75 % de la surface sera d\u00e9di\u00e9e aux d\u00e9placements d\u00e9carbon\u00e9s<\/strong>, facilitant l\u2019acc\u00e8s au futur h\u00f4pital de l\u2019\u00eele de Nantes et am\u00e9liorant \n    les connexions Nord\u2013Sud.\n  <\/p>\n<\/section>\n\n<section>\n  <h2>1 779 m\u00b2 de v\u00e9g\u00e9tation et une gestion \u00e9cologique des plantations<\/h2>\n  <p>\n    Une particularit\u00e9 majeure du pont est l\u2019int\u00e9gration de <strong>1 779 m\u00b2 d\u2019espaces verts<\/strong>, soit 20 % de la surface totale. Le belv\u00e9d\u00e8re v\u00e9g\u00e9talis\u00e9 \n    accueillera une flore adapt\u00e9e au climat lig\u00e9rien et aux conditions de s\u00e9cheresse : coteaux secs, plantes m\u00e9diterran\u00e9ennes, essences peu gourmandes \n    en eau. Gr\u00e2ce \u00e0 un substrat sp\u00e9cialement con\u00e7u pour les plantations hors-sol, les v\u00e9g\u00e9taux n\u2019auront pas besoin d\u2019arrosage, hormis certaines \n    pelouses accessibles.\n  <\/p>\n  <p>\n    Ce choix paysager r\u00e9pond \u00e0 une volont\u00e9 de cr\u00e9er un corridor \u00e9cologique suspendu entre les deux rives, prolongeant les jardins maritimes du quai \n    de la Fosse.\n  <\/p>\n<\/section>\n\n<section>\n  <h2>R\u00e9emploi du pont existant : un impact carbone consid\u00e9rable<\/h2>\n  <p>\n    L\u2019un des gestes les plus forts du projet r\u00e9side dans la conservation d\u2019une grande partie de l\u2019ouvrage des ann\u00e9es 1970. Cette d\u00e9cision \u00e9vite la \n    d\u00e9molition de <strong>4 800 tonnes de b\u00e9ton<\/strong> et repr\u00e9sente une \u00e9conomie de <strong>6 000 tonnes de CO\u2082<\/strong> par rapport \u00e0 un remplacement total.\n  <\/p>\n  <p>\n    Ce choix n\u00e9cessite une ing\u00e9nierie fine, mais il marque une rupture nette avec les m\u00e9thodes traditionnelles, en pla\u00e7ant la sobri\u00e9t\u00e9 constructive \n    au c\u0153ur du chantier.\n  <\/p>\n<\/section>\n\n<section>\n  <h2>Des mat\u00e9riaux bas carbone pour un pont durable<\/h2>\n  <p>\n    Les mat\u00e9riaux ont \u00e9t\u00e9 s\u00e9lectionn\u00e9s pour leur impact r\u00e9duit. Le garde-corps sera r\u00e9alis\u00e9 en acier corten, dont la patine naturelle ne requiert \n    aucune maintenance. Le belv\u00e9d\u00e8re et le mobilier seront con\u00e7us en robinier, un bois fran\u00e7ais cultiv\u00e9 durablement. Quant \u00e0 la charpente, elle \n    int\u00e9grera une part significative d\u2019acier recycl\u00e9.\n  <\/p>\n  <p>\n    L\u2019ensemble du chantier, estim\u00e9 \u00e0 60&nbsp;millions d\u2019euros, s\u2019inscrit dans une logique d\u2019\u00e9coconception assum\u00e9e : r\u00e9emploi, choix biosourc\u00e9s, \n    limitation des \u00e9missions et durabilit\u00e9 des usages.\n  <\/p>\n<\/section>\n\n<!-- ========================================================= -->\n<!-- ===================== QUIZ INTERACTIF =================== -->\n<!-- ========================================================= -->\n\n<section id=\"imn-quiz-anne-bretagne\" style=\"margin-top:40px;\">\n  <h2>Quiz : Comprendre le futur pont Anne-de-Bretagne (3 s\u00e9ries, 3 niveaux)<\/h2>\n\n  <style>\n    .imn-quiz-block{max-width:700px;margin:auto;padding:20px;border:2px solid #5532F0;border-radius:12px;}\n    .imn-q{margin-bottom:25px;}\n    .imn-q h3{font-size:18px;margin-bottom:10px;}\n    .imn-a{margin:6px 0;padding:8px 10px;border:1px solid #5532F0;border-radius:8px;cursor:pointer;}\n    .imn-a:hover{background:#f3f0ff;}\n    .imn-correct{background:#d6f5d6!important;border-color:#27a227!important;}\n    .imn-wrong{background:#f8d0d0!important;border-color:#c72525!important;}\n    #imn-next,#imn-restart{\n      background:#5532F0;color:#fff;border:none;padding:10px 16px;border-radius:8px;\n      cursor:pointer;display:none;margin-top:20px;font-size:16px;\n    }\n    #imn-score{text-align:center;font-size:18px;margin-top:20px;display:none;}\n  <\/style>\n\n  <div class=\"imn-quiz-block\">\n    <div id=\"imn-quiz-container\"><\/div>\n    <div id=\"imn-score\"><\/div>\n    <button id=\"imn-next\">Question suivante<\/button>\n    <button id=\"imn-restart\">Rejouer le quiz<\/button>\n  <\/div>\n\n  <script>\n    (function(){\n      function track(e){ try{window.dispatchEvent(new CustomEvent(\"imn_analytics\",{detail:{event:e}}));}catch(_){ } }\n\n      const series = [\n        \/\/ S\u00e9rie 1 \u2013 Niveau facile\n        [\n          {q:\"Quel pourcentage du pont sera consacr\u00e9 aux espaces verts ?\",a:[\"20 %\",\"5 %\",\"35 %\"],correct:0},\n          {q:\"Quelle est la surface totale v\u00e9g\u00e9talis\u00e9e ?\",a:[\"1 779 m\u00b2\",\"450 m\u00b2\",\"6 000 m\u00b2\"],correct:0},\n          {q:\"Quel type de mobilit\u00e9 est prioritaire ?\",a:[\"Mobilit\u00e9s douces\",\"Voitures\",\"Poids lourds\"],correct:0},\n          {q:\"Combien de lignes de tramway franchiront l\u2019ouvrage ?\",a:[\"2\",\"1\",\"3\"],correct:0},\n          {q:\"L\u2019ouverture du pont est pr\u00e9vue\u2026\",a:[\"Fin 2027\",\"2025\",\"2030\"],correct:0}\n        ],\n        \/\/ S\u00e9rie 2 \u2013 Niveau interm\u00e9diaire\n        [\n          {q:\"Quel mat\u00e9riau est utilis\u00e9 pour le garde-corps ?\",a:[\"Acier corten\",\"Aluminium peint\",\"Inox poli\"],correct:0},\n          {q:\"Pourquoi le choix du corten est-il \u00e9cologique ?\",a:[\"Z\u00e9ro maintenance\",\"Tr\u00e8s co\u00fbteux\",\"Import\u00e9\"],correct:0},\n          {q:\"Quel type de flore a \u00e9t\u00e9 choisi ?\",a:[\"Lig\u00e9rienne & m\u00e9diterran\u00e9enne\",\"Tropicale\",\"Aquatique\"],correct:0},\n          {q:\"Quelle \u00e9conomie de CO\u2082 repr\u00e9sente la conservation du pont ?\",a:[\"6 000 tonnes\",\"600 tonnes\",\"60 tonnes\"],correct:0},\n          {q:\"La largeur passera de 18 m \u00e0\u2026\",a:[\"53 m\",\"40 m\",\"70 m\"],correct:0}\n        ],\n        \/\/ S\u00e9rie 3 \u2013 Niveau difficile\n        [\n          {q:\"Quel bois est utilis\u00e9 pour le belv\u00e9d\u00e8re ?\",a:[\"Robinier\",\"Teck\",\"Pin sylvestre\"],correct:0},\n          {q:\"Pourquoi le substrat hors-sol est-il sp\u00e9cifique ?\",a:[\"Plantes sans arrosage\",\"Meilleur rendu visuel\",\"Plus lourd\"],correct:0},\n          {q:\"Quel est l\u2019impact carbone \u00e9vit\u00e9 en b\u00e9ton ?\",a:[\"4 800 tonnes\",\"1 200 tonnes\",\"8 500 tonnes\"],correct:0},\n          {q:\"Quel pourcentage du pont est d\u00e9di\u00e9 aux mobilit\u00e9s d\u00e9carbon\u00e9es ?\",a:[\"75 %\",\"50 %\",\"30 %\"],correct:0},\n          {q:\"Quel est le co\u00fbt total du projet ?\",a:[\"60 M\u20ac\",\"30 M\u20ac\",\"120 M\u20ac\"],correct:0}\n        ]\n      ];\n\n      let flat=[]; 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score=0;\n        load();\n        track(\"quiz_restart\");\n      });\n\n      load();\n    })();\n  <\/script>\n\n<\/section>\n\n<footer style=\"margin-top:40px;\">\n  <p>Sources : dossier d\u2019information Nantes M\u00e9tropole.<\/p>\n<\/footer>\n\n<\/article>\n\n","protected":false},"excerpt":{"rendered":"<p>Lieu strat\u00e9gique de franchissement de la Loire, le futur pont Anne-de-Bretagne, dont l\u2019ouverture est pr\u00e9vue fin 2027, deviendra le plus large d\u2019Europe. Con\u00e7u comme un \u00ab pont-place \u00bb, aussi vaste qu\u2019un terrain de football, l\u2019ouvrage incarne une nouvelle mani\u00e8re d\u2019imaginer la transition \u00e9cologique : r\u00e9emploi de l\u2019existant, mat\u00e9riaux biosourc\u00e9s, espaces verts en hauteur, mobilit\u00e9s d\u00e9carbon\u00e9es [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3630,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":"","event_start_date":"","event_end_date":"","event_location":"","imn_event_city":"","imn_event_start_time":"","imn_event_end_time":"","imn_event_all_day":"","imn_event_address":"","imn_event_ticket_url":"","imn_event_price":"","imn_event_status":"","imn_event_organizer":"","imn_event_accessibility":""},"categories":[22],"tags":[2424,382,332,175,641,2425,131,285],"class_list":["post-3629","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-nantes","tag-ecoconception","tag-loire","tag-mobilites-douces","tag-nantes-metropole","tag-pont-anne-de-bretagne","tag-territoire-durable","tag-tramway","tag-transition-ecologique"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Pourquoi le futur pont Anne-de-Bretagne sera l\u2019un des plus \u00e9cologiques d\u2019Europe ? 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