{"id":5400,"date":"2026-01-28T19:27:50","date_gmt":"2026-01-28T19:27:50","guid":{"rendered":"https:\/\/infos-media-nantes.fr\/?p=5400"},"modified":"2026-01-28T19:32:11","modified_gmt":"2026-01-28T19:32:11","slug":"sentier-cotier-saint-nazaire-pornichet-reouverture","status":"publish","type":"post","link":"https:\/\/infos-media-nantes.fr\/sentier-cotier-saint-nazaire-pornichet-reouverture\/","title":{"rendered":"Le sentier c\u00f4tier entre Saint-Nazaire et Pornichet est de nouveau accessible sans d\u00e9viation"},"content":{"rendered":"\n<article id=\"imn-sentier-cotier-saint-nazaire-pornichet-reouverture-2026\" style=\"font-family:Inter,Arial,sans-serif;color:#222;line-height:1.65;max-width:1100px;margin:auto;padding:24px;background:#fff;box-sizing:border-box;\">\n\n<header>\n  <p>\n    C\u2019est une r\u00e9ouverture tr\u00e8s attendue par les amateurs de marche et de paysages littoraux. Le\n    <strong>sentier c\u00f4tier reliant Saint-Nazaire \u00e0 Pornichet est d\u00e9sormais enti\u00e8rement ouvert au public<\/strong>.\n    Les d\u00e9viations en place depuis de nombreuses ann\u00e9es ont \u00e9t\u00e9 lev\u00e9es apr\u00e8s la fin des travaux de s\u00e9curisation.\n  <\/p>\n<\/header>\n\n<section>\n  <p>\n    Chaque ann\u00e9e, pr\u00e8s de <strong>300 000 promeneurs<\/strong> empruntent cet itin\u00e9raire longeant la c\u00f4te entre\n    Saint-Nazaire et Pornichet. Jusqu\u2019ici, certaines portions restaient inaccessibles en raison de\n    <strong>risques d\u2019\u00e9boulement identifi\u00e9s sur plusieurs secteurs<\/strong>, notamment autour de Virechat et Tr\u00e9b\u00e9zy.\n  <\/p>\n\n  <p>\n    Les op\u00e9rations men\u00e9es par <strong>Saint-Nazaire agglom\u00e9ration<\/strong> permettent d\u00e9sormais de garantir la\n    continuit\u00e9 du parcours, tout en limitant l\u2019impact sur l\u2019environnement.\n  <\/p>\n<\/section>\n\n<section>\n  <h2>Des travaux adapt\u00e9s \u00e0 un site naturel sensible<\/h2>\n\n  <p>\n    Les zones concern\u00e9es se situent au c\u0153ur d\u2019un secteur class\u00e9 <strong>Natura 2000<\/strong>, ce qui a impos\u00e9 des\n    contraintes fortes en mati\u00e8re de protection des milieux naturels. La recherche d\u2019une solution durable a donc\n    n\u00e9cessit\u00e9 plusieurs ann\u00e9es d\u2019\u00e9tudes et de concertation.\n  <\/p>\n\n  <p>\n    Le choix retenu consiste \u00e0 <strong>reculer le trac\u00e9 du sentier de 3 \u00e0 5 m\u00e8tres<\/strong> sur environ\n    <strong>200 m\u00e8tres lin\u00e9aires<\/strong>, afin de l\u2019\u00e9loigner des zones les plus expos\u00e9es. Deux\n    <strong>passerelles ont \u00e9galement \u00e9t\u00e9 am\u00e9nag\u00e9es<\/strong> au niveau des plages de Virechat et de Tr\u00e9b\u00e9zy pour\n    permettre le passage des pi\u00e9tons en toute s\u00e9curit\u00e9.\n  <\/p>\n<\/section>\n\n<section>\n  <h2>Quelques zones encore prot\u00e9g\u00e9es, sans impact pour les marcheurs<\/h2>\n\n  <p>\n    Sur certains points, des <strong>barri\u00e8res temporaires<\/strong> sont toujours visibles. Elles servent \u00e0 prot\u00e9ger\n    des espaces en attente de plantations, pr\u00e9vues lorsque les conditions m\u00e9t\u00e9orologiques seront plus favorables.\n  <\/p>\n\n  <p>\n    Ces dispositifs n\u2019ont toutefois <strong>aucune incidence sur la circulation pi\u00e9tonne<\/strong>, et le sentier\n    peut d\u00e9sormais \u00eatre parcouru sans interruption entre Saint-Nazaire et Pornichet.\n  <\/p>\n<\/section>\n\n<section>\n  <h2>Un chantier de grande ampleur financ\u00e9 en partie par l\u2019\u00c9tat<\/h2>\n\n  <p>\n    Le co\u00fbt total des op\u00e9rations de s\u00e9curisation s\u2019\u00e9l\u00e8ve \u00e0 environ <strong>1,7 million d\u2019euros<\/strong>.\n    Le projet a b\u00e9n\u00e9fici\u00e9 d\u2019une <strong>subvention de 800 000 euros de l\u2019\u00c9tat<\/strong>, attribu\u00e9e dans le cadre de\n    l\u2019appel \u00e0 projets <strong>France vue sur mer<\/strong>, destin\u00e9 \u00e0 soutenir la valorisation durable des littoraux.\n  <\/p>\n\n  <p>\n    Pour l\u2019agglom\u00e9ration, cette r\u00e9ouverture repr\u00e9sente \u00e0 la fois un enjeu de s\u00e9curit\u00e9 et un atout pour\n    <strong>l\u2019attractivit\u00e9 touristique et locale<\/strong>, en permettant de profiter pleinement du littoral tout au\n    long de l\u2019ann\u00e9e.\n  <\/p>\n<\/section>\n\n<section>\n  <h2>Mini-jeu IMN : Math Rush, sp\u00e9cial parcours c\u00f4tier<\/h2>\n\n  <p>\n    <strong>Objectif :<\/strong> r\u00e9ponds le plus vite possible aux op\u00e9rations avant la fin du temps. Trois erreurs ou\n    un temps \u00e9coul\u00e9 et la partie s\u2019arr\u00eate. Encha\u00eene les bonnes r\u00e9ponses pour gagner des bonus.\n  <\/p>\n\n  <!-- =========================================================\n     MINI-JEU IMN OFFICIEL \u2014 MATH RUSH IMN V1.2 (progressif)\n     Difficult\u00e9 augmente toutes les 25s\n     VAJ autonome, mobile-first, tracking IMN Analytics\n========================================================= -->\n\n<section id=\"imn-mathrush\" style=\"margin:40px auto;display:flex;justify-content:center;align-items:center;\">\n  <div style=\"width:100%;max-width:360px;margin:auto;text-align:center;\">\n\n    <h3 style=\"margin:0 0 8px 0;\">Math Rush IMN<\/h3>\n\n    <div style=\"display:flex;justify-content:space-between;margin-bottom:8px;font-weight:bold;\">\n      <span>Score : <span id=\"mr-score\">0<\/span><\/span>\n      <span>Niveau : <span id=\"mr-level\">1<\/span><\/span>\n    <\/div>\n\n    <div style=\"display:flex;justify-content:space-between;margin-bottom:6px;font-weight:bold;\">\n      <span>Vies : <span id=\"mr-lives\">\u2764\u2764\u2764<\/span><\/span>\n      <span>Temps<\/span>\n    <\/div>\n\n    <div style=\"height:8px;background:#eee;border-radius:4px;overflow:hidden;margin-bottom:10px;\">\n      <div id=\"mr-bar\" style=\"height:100%;width:100%;background:#5532F0;transition:width .1s linear;\"><\/div>\n    <\/div>\n\n    <div id=\"mr-question\" style=\"font-size:22px;font-weight:bold;margin-bottom:10px;\">?<\/div>\n\n    <div id=\"mr-answers\" style=\"display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:10px;\"><\/div>\n\n    <button id=\"mr-start\" class=\"imn-btn\">Jouer<\/button>\n\n    <div id=\"mr-end\" style=\"display:none;margin-top:10px;font-weight:bold;\"><\/div>\n\n  <\/div>\n<\/section>\n\n<style>\n  .imn-btn{\n    background:#5532F0;\n    color:#fff;\n    border:1px solid #5532F0;\n    padding:10px 14px;\n    border-radius:8px;\n    font-size:15px;\n    cursor:pointer;\n    appearance:none;\n    -webkit-appearance:none;\n  }\n  .imn-btn:hover{opacity:.9}\n\n  \/* \u2705 Correction lisibilit\u00e9 des r\u00e9ponses *\/\n  .mr-btn{\n    background:#ffffff;\n    color:#000000;\n    border:2px solid #5532F0;\n    border-radius:8px;\n    padding:12px 10px;\n    font-size:17px;\n    font-weight:600;\n    cursor:pointer;\n    appearance:none;\n    -webkit-appearance:none;\n  }\n  .mr-btn:hover{\n    background:#f2edff;\n  }\n  .mr-btn:active{\n    background:#5532F0;\n    color:#ffffff;\n  }\n<\/style>\n\n<script>\n(function(){\n  const qEl=document.getElementById(\"mr-question\");\n  const aEl=document.getElementById(\"mr-answers\");\n  const bar=document.getElementById(\"mr-bar\");\n  const scoreEl=document.getElementById(\"mr-score\");\n  const livesEl=document.getElementById(\"mr-lives\");\n  const startBtn=document.getElementById(\"mr-start\");\n  const endEl=document.getElementById(\"mr-end\");\n  const levelEl=document.getElementById(\"mr-level\");\n\n  let score=0,lives=3,streak=0;\n  let timeLimit=3000;\n  let timer=null,correct=null,playing=false;\n\n  let level=1;\n  let levelTimer=null;\n\n  function track(ev,data){\n    if(window.imnTrack){ imnTrack(ev,data||{}); }\n  }\n\n  function rand(min,max){\n    return Math.floor(Math.random()*(max-min+1))+min;\n  }\n\n  function newQ(){\n    let a,b,op,res;\n\n    if(level<=2){\n      a=rand(1,9); b=rand(1,9); op=\"+\";\n      res=a+b;\n    }\n    else if(level<=4){\n      a=rand(5,20); b=rand(1,15); op=\"+\";\n      res=a+b;\n    }\n    else if(level<=6){\n      if(Math.random()<0.5){\n        a=rand(10,30); b=rand(1,20); op=\"+\";\n        res=a+b;\n      }else{\n        a=rand(10,30); b=rand(1,a); op=\"-\";\n        res=a-b;\n      }\n    }\n    else{\n      if(Math.random()<0.5){\n        a=rand(20,50); b=rand(10,40); op=\"+\";\n        res=a+b;\n      }else{\n        a=rand(20,60); b=rand(1,a); op=\"-\";\n        res=a-b;\n      }\n    }\n\n    correct=res;\n    qEl.textContent=a+\" \"+op+\" \"+b+\" = ?\";\n\n    const opts=[\n      correct,\n      correct+rand(1,4),\n      correct-rand(1,4),\n      correct+rand(5,9)\n    ].sort(()=>Math.random()-0.5);\n\n    aEl.innerHTML=\"\";\n    opts.forEach(v=>{\n      const b=document.createElement(\"button\");\n      b.className=\"mr-btn\";\n      b.textContent=v;\n      b.addEventListener(\"pointerdown\",()=>answer(v));\n      aEl.appendChild(b);\n    });\n\n    resetBar();\n  }\n\n  function resetBar(){\n    clearInterval(timer);\n    let t=100;\n    bar.style.width=\"100%\";\n    timer=setInterval(()=>{\n      t-=100\/(timeLimit\/100);\n      bar.style.width=t+\"%\";\n      if(t<=0){\n        clearInterval(timer);\n        miss();\n      }\n    },100);\n  }\n\n  function answer(v){\n    if(!playing) return;\n\n    if(v===correct){\n      score++;\n      streak++;\n\n      if(streak>=3){\n        lives=Math.min(3,lives+1);\n        streak=0;\n      }\n\n      scoreEl.textContent=score;\n      updateLives();\n      track(\"mathrush_correct\",{level:level});\n      newQ();\n    }else{\n      miss();\n    }\n  }\n\n  function miss(){\n    streak=0;\n    lives--;\n    updateLives();\n    track(\"mathrush_miss\",{level:level});\n    if(lives<=0){\n      end();\n    }else{\n      newQ();\n    }\n  }\n\n  function updateLives(){\n    livesEl.textContent=\"\u2764\".repeat(lives);\n  }\n\n  function start(){\n    playing=true;\n    score=0;lives=3;streak=0;\n    level=1;\n    timeLimit=3000;\n\n    scoreEl.textContent=\"0\";\n    levelEl.textContent=\"1\";\n    updateLives();\n    endEl.style.display=\"none\";\n    startBtn.style.display=\"none\";\n\n    track(\"mathrush_start\");\n\n    clearInterval(levelTimer);\n    levelTimer=setInterval(()=>{\n      level++;\n      levelEl.textContent=level;\n      timeLimit=Math.max(1400,timeLimit-250);\n      track(\"mathrush_level\",{level:level});\n    },25000);\n\n    newQ();\n  }\n\n  function end(){\n    playing=false;\n    clearInterval(timer);\n    clearInterval(levelTimer);\n    endEl.style.display=\"block\";\n    endEl.textContent=\"Partie termin\u00e9e. Score : \"+score;\n    startBtn.textContent=\"Rejouer\";\n    startBtn.style.display=\"inline-block\";\n    track(\"mathrush_end\",{score:score,level:level});\n  }\n\n  startBtn.addEventListener(\"pointerdown\",start);\n})();\n<\/script>\n<\/section>\n\n<footer>\n  <h2>Sources<\/h2>\n  <ul>\n    <li>Saint-Nazaire agglom\u00e9ration, informations officielles sur les travaux du sentier c\u00f4tier Virechat Tr\u00e9b\u00e9zy<\/li>\n    <li>Programme France vue sur mer, subventions \u00c9tat pour projets littoraux<\/li>\n    <li>Documents publics li\u00e9s au site Natura 2000 du littoral nazairien<\/li>\n  <\/ul>\n<\/footer>\n\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>C\u2019est une r\u00e9ouverture tr\u00e8s attendue par les amateurs de marche et de paysages littoraux. Le sentier c\u00f4tier reliant Saint-Nazaire \u00e0 Pornichet est d\u00e9sormais enti\u00e8rement ouvert au public. Les d\u00e9viations en place depuis de nombreuses ann\u00e9es ont \u00e9t\u00e9 lev\u00e9es apr\u00e8s la fin des travaux de s\u00e9curisation. Chaque ann\u00e9e, pr\u00e8s de 300 000 promeneurs empruntent cet itin\u00e9raire [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5401,"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":[3840,2361,968,3839,166,3838,1496],"class_list":["post-5400","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-nantes","tag-agglomeration","tag-natura-2000","tag-pornichet","tag-randonnee-littorale","tag-saint-nazaire","tag-sentier-cotier","tag-travaux-publics"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - 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