{"id":6597,"date":"2026-03-23T19:30:31","date_gmt":"2026-03-23T19:30:31","guid":{"rendered":"https:\/\/infos-media-nantes.fr\/?p=6597"},"modified":"2026-03-23T19:34:13","modified_gmt":"2026-03-23T19:34:13","slug":"travaux-routes-loire-atlantique-2026","status":"publish","type":"post","link":"https:\/\/infos-media-nantes.fr\/travaux-routes-loire-atlantique-2026\/","title":{"rendered":"Routes nationales : 9 millions d\u2019euros investis en 2026 en Loire-Atlantique, plusieurs axes majeurs concern\u00e9s"},"content":{"rendered":"\n<article>\n\n<section>\n\n<p>\nEn 2026, l\u2019\u00c9tat engage un nouveau programme d\u2019entretien des routes nationales en Loire-Atlantique. Au total, 9 millions d\u2019euros seront mobilis\u00e9s pour am\u00e9liorer la s\u00e9curit\u00e9, la fluidit\u00e9 du trafic et le confort de conduite sur des axes particuli\u00e8rement fr\u00e9quent\u00e9s, notamment autour de Nantes.\n<\/p>\n\n<p>\nCes op\u00e9rations sont pilot\u00e9es par la Direction interd\u00e9partementale des routes (Dir) Ouest, en charge de l\u2019exploitation et des travaux sur les infrastructures nationales. L\u2019objectif est clair : maintenir un r\u00e9seau fiable et performant, capable de r\u00e9pondre \u00e0 un trafic dense et r\u00e9gulier.\n<\/p>\n\n<p>\nLe d\u00e9partement compte environ 280 km de routes nationales. Certains tron\u00e7ons, comme le p\u00e9riph\u00e9rique nantais ou les axes reliant Nantes \u00e0 Rennes, Cholet ou la c\u00f4te, n\u00e9cessitent un entretien constant en raison de leur forte fr\u00e9quentation.\n<\/p>\n\n<h2>Un effort poursuivi apr\u00e8s une ann\u00e9e 2025 d\u00e9j\u00e0 marqu\u00e9e<\/h2>\n\n<p>\nEn 2025, l\u2019\u00c9tat avait d\u00e9j\u00e0 consacr\u00e9 16 millions d\u2019euros \u00e0 ces infrastructures. Plusieurs chantiers d\u2019envergure avaient \u00e9t\u00e9 men\u00e9s, dont la r\u00e9novation de l\u2019\u00e9tanch\u00e9it\u00e9 du pont de Chevir\u00e9, un point strat\u00e9gique du r\u00e9seau routier local.\n<\/p>\n\n<p>\nLe programme 2026 s\u2019inscrit dans cette continuit\u00e9. Il pr\u00e9voit principalement des travaux de r\u00e9novation de chauss\u00e9e, accompagn\u00e9s d\u2019am\u00e9liorations de la signalisation et des dispositifs de s\u00e9curit\u00e9.\n<\/p>\n\n<h2>Sept chantiers r\u00e9partis sur les axes majeurs<\/h2>\n\n<section style=\"background:#f5f3ff;border-left:5px solid #5532F0;padding:18px 16px;border-radius:10px;margin:20px 0;\">\n\n<section style=\"margin:20px 0;\">\n\n<h2 style=\"color:#5532F0;\">\ud83d\udea7 Travaux routiers 2026 : les axes concern\u00e9s<\/h2>\n\n<div class=\"imn-accordion\">\n\n<!-- ITEM -->\n<div class=\"imn-acc-item\">\n<button class=\"imn-acc-header\">Savenay (RN 165 \u2013 Rennes \u2192 Nantes)<\/button>\n<div class=\"imn-acc-content\">\n<p>R\u00e9novation de 3 km de chauss\u00e9e<br>\n<strong>Du 15 mars au 30 avril<\/strong><\/p>\n<\/div>\n<\/div>\n\n<div class=\"imn-acc-item\">\n<button class=\"imn-acc-header\">Orvault (RN 165 \u2013 2&#215;2 voies)<\/button>\n<div class=\"imn-acc-content\">\n<p>R\u00e9novation de 4 km de chauss\u00e9e<br>\n<strong>Du 18 mai au 21 juin<\/strong><\/p>\n<\/div>\n<\/div>\n\n<div class=\"imn-acc-item\">\n<button class=\"imn-acc-header\">Tilli\u00e8res (RN 249 \u2013 Nantes \u2192 Cholet)<\/button>\n<div class=\"imn-acc-content\">\n<p>R\u00e9novation de 2 km de chauss\u00e9e<br>\n<strong>Du 26 mai au 12 juin<\/strong><\/p>\n<\/div>\n<\/div>\n\n<div class=\"imn-acc-item\">\n<button class=\"imn-acc-header\">Nantes (p\u00e9riph\u00e9rique int\u00e9rieur)<\/button>\n<div class=\"imn-acc-content\">\n<p>R\u00e9novation de 4 km de chauss\u00e9e<br>\n<strong>Du 3 juin au 3 octobre<\/strong><\/p>\n<\/div>\n<\/div>\n\n<div class=\"imn-acc-item\">\n<button class=\"imn-acc-header\">La S\u00e9guini\u00e8re (RN 249 \u2013 Cholet \u2192 Nantes)<\/button>\n<div class=\"imn-acc-content\">\n<p>R\u00e9novation de 3 km de chauss\u00e9e<br>\n<strong>Du 13 juillet au 31 ao\u00fbt<\/strong><\/p>\n<\/div>\n<\/div>\n\n<div class=\"imn-acc-item\">\n<button class=\"imn-acc-header\">La Grigonnais (RN 137 \u2013 Rennes \u2192 Nantes)<\/button>\n<div class=\"imn-acc-content\">\n<p>R\u00e9novation de 1,5 km de chauss\u00e9e<br>\n<strong>Du 20 juillet au 27 ao\u00fbt<\/strong><\/p>\n<\/div>\n<\/div>\n\n<div class=\"imn-acc-item\">\n<button class=\"imn-acc-header\">Treilli\u00e8res (RN 137 \u2013 Rennes \u2192 Nantes)<\/button>\n<div class=\"imn-acc-content\">\n<p>R\u00e9novation de 4 km de chauss\u00e9e<br>\n<strong>Du 24 ao\u00fbt au 9 octobre<\/strong><\/p>\n<\/div>\n<\/div>\n\n<\/div>\n\n<p style=\"margin-top:15px;\">\nCes axes enregistrent entre <strong>30 000 et 39 000 v\u00e9hicules par jour<\/strong>. Leur entretien est donc essentiel pour garantir une circulation fluide et s\u00e9curis\u00e9e.\n<\/p>\n\n<\/section>\n\n<style>\n.imn-accordion{\ndisplay:flex;\nflex-direction:column;\ngap:10px;\n}\n\n.imn-acc-item{\nborder:1px solid #e5e7eb;\nborder-radius:10px;\noverflow:hidden;\nbackground:#fff;\n}\n\n.imn-acc-header{\nwidth:100%;\ntext-align:left;\npadding:12px 14px;\nfont-weight:bold;\nbackground:#f5f3ff;\nborder:none;\ncursor:pointer;\ncolor:#5532F0;\nfont-size:15px;\n}\n\n.imn-acc-content{\nmax-height:0;\noverflow:hidden;\ntransition:max-height 0.3s ease;\npadding:0 14px;\n}\n\n.imn-acc-item.active .imn-acc-content{\npadding:12px 14px;\nmax-height:200px;\n}\n<\/style>\n\n<script>\n(function(){\nconst items=document.querySelectorAll('.imn-acc-item');\n\nitems.forEach(item=>{\nconst btn=item.querySelector('.imn-acc-header');\n\nbtn.addEventListener('click',()=>{\nconst isOpen=item.classList.contains('active');\n\nitems.forEach(i=>i.classList.remove('active'));\n\nif(!isOpen){\nitem.classList.add('active');\n\nsetTimeout(()=>{\nitem.scrollIntoView({behavior:'smooth',block:'start'});\n},150);\n}\n});\n});\n})();\n<\/script>\n\n<h2>Des travaux parfois tr\u00e8s impactants<\/h2>\n\n<p>\nLa Dir Ouest pr\u00e9cise que certains chantiers pourront fortement perturber la circulation. Les contraintes techniques ou l\u2019emplacement sur des axes strat\u00e9giques rendent certaines interventions complexes.\n<\/p>\n\n<p>\nDes op\u00e9rations suppl\u00e9mentaires pourront \u00e9galement \u00eatre engag\u00e9es en cours d\u2019ann\u00e9e, en fonction de l\u2019\u00e9tat du r\u00e9seau.\n<\/p>\n\n<h2>S\u00e9curit\u00e9 : un enjeu partag\u00e9<\/h2>\n\n<p>\nSur les zones de chantier, la vigilance reste indispensable. Les usagers sont appel\u00e9s \u00e0 respecter strictement la signalisation temporaire, les limitations de vitesse et les distances de s\u00e9curit\u00e9.\n<\/p>\n\n<p>\nLes phases de basculement de circulation, les r\u00e9tr\u00e9cissements de voies ou encore les interventions de nuit n\u00e9cessitent une attention particuli\u00e8re. L\u2019objectif est de prot\u00e9ger \u00e0 la fois les \u00e9quipes sur place et les conducteurs.\n<\/p>\n\n<p>\nAvec ce programme, l\u2019\u00c9tat poursuit sa strat\u00e9gie d\u2019entretien sur des axes structurants pour la Loire-Atlantique. Des travaux indispensables pour accompagner les d\u00e9placements du quotidien dans un d\u00e9partement en forte dynamique.\n<\/p>\n\n<\/section>\n\n<!-- message cach\u00e9 IMN -->\n<!-- Astuce : privil\u00e9gie les heures creuses pour \u00e9viter les zones en travaux -->\n\n<footer>\n<p style=\"font-size:12px;\">\nSources : Direction interd\u00e9partementale des routes (Dir) Ouest, services de l\u2019\u00c9tat\n<\/p>\n<\/footer>\n\n<section data-imn-game=\"memory6x6\">\n\n<h2>Mini-jeu IMN : Memory sp\u00e9cial routes et trafic (niveau expert)<\/h2>\n<p>\nRetrouve toutes les paires le plus rapidement possible.  \nMoins de coups + moins de temps = meilleur score.\n<\/p>\n\n<div style=\"margin-bottom:10px;\">\n<strong>Coups :<\/strong> <span id=\"mem-moves\">0<\/span> \u2014 \n<strong>Temps :<\/strong> <span id=\"mem-timer\">0 s<\/span> \u2014 \n<strong>Score :<\/strong> <span id=\"mem-score\">0<\/span>\n<\/div>\n\n<div id=\"mem-wrap\" class=\"mem-wrap\">\n  <div id=\"mem-grid\" class=\"mem-grid\"><\/div>\n<\/div>\n\n<div id=\"mem-end\" style=\"display:none;margin-top:15px;font-weight:bold;\"><\/div>\n\n<button id=\"mem-restart\" class=\"imn-btn\">Rejouer<\/button>\n\n<script>\n(function(){\n\nif(window.__memIMN6x6_global) return;\nwindow.__memIMN6x6_global = true;\n\nwindow.imnTrack = window.imnTrack || function(){};\n\nconst GAME = \"memory6x6\";\n\nconst sets = [\n[\"\ud83d\ude97\",\"\ud83d\udea7\",\"\ud83d\udee3\ufe0f\",\"\ud83d\udea6\",\"\ud83d\ude99\",\"\ud83e\uddba\",\"\ud83d\ude9b\",\"\ud83d\ude90\",\"\u26d4\",\n\"\u26a0\ufe0f\",\"\ud83d\uded1\",\"\ud83d\udea8\",\"\ud83d\udee4\ufe0f\",\"\ud83e\uddf1\",\"\ud83d\udea7\",\"\ud83d\ude97\",\"\ud83d\udea6\",\"\u26a0\ufe0f\"],\n[\"\ud83d\ude99\",\"\ud83d\ude97\",\"\ud83d\ude9b\",\"\ud83d\ude90\",\"\ud83d\udea7\",\"\ud83d\udee3\ufe0f\",\"\ud83d\udea6\",\"\u26d4\",\"\u26a0\ufe0f\",\n\"\ud83d\uded1\",\"\ud83d\udea8\",\"\ud83e\uddba\",\"\ud83e\uddf1\",\"\ud83d\udee4\ufe0f\",\"\ud83d\ude99\",\"\ud83d\ude97\",\"\ud83d\udea6\",\"\ud83d\udea7\"]\n];\n\nlet cards=[];\nlet first=null,second=null,lock=false;\nlet matches=0,moves=0,timer=0;\nlet timerInterval=null;\n\nconst grid=document.getElementById(\"mem-grid\");\nconst wrap=document.getElementById(\"mem-wrap\");\nconst movesEl=document.getElementById(\"mem-moves\");\nconst timerEl=document.getElementById(\"mem-timer\");\nconst scoreEl=document.getElementById(\"mem-score\");\nconst endEl=document.getElementById(\"mem-end\");\n\nfunction getSet(){\nreturn sets[Math.floor(Math.random()*sets.length)];\n}\n\nfunction shuffle(){\nconst base = getSet();\ncards=[...base,...base].sort(()=>Math.random()-0.5);\n}\n\nfunction startTimer(){\nif(timerInterval) return;\ntimerInterval=setInterval(()=>{\ntimer++;\ntimerEl.textContent=timer+\" s\";\nupdateScore();\n},1000);\n}\n\nfunction stopTimer(){\nclearInterval(timerInterval);\ntimerInterval=null;\n}\n\nfunction calcScore(){\nlet score = 10000 - (moves*10 + timer*6);\nreturn Math.max(0, score);\n}\n\nfunction updateScore(){\nscoreEl.textContent = calcScore();\n}\n\nfunction render(){\ngrid.innerHTML=\"\";\ncards.forEach(icon=>{\nconst card=document.createElement(\"div\");\ncard.className=\"mem-card\";\ncard.dataset.icon=icon;\n\ncard.innerHTML=`\n<div class=\"mem-inner\">\n<div class=\"mem-front\"><\/div>\n<div class=\"mem-back\">${icon}<\/div>\n<\/div>`;\n\ncard.onclick=()=>flip(card);\ngrid.appendChild(card);\n});\n}\n\nfunction flash(type){\nwrap.classList.remove(\"flash-green\",\"flash-red\");\nwrap.classList.add(type===\"good\"?\"flash-green\":\"flash-red\");\nsetTimeout(()=>wrap.classList.remove(\"flash-green\",\"flash-red\"),200);\n}\n\nfunction flip(card){\n\nif(lock || card.classList.contains(\"done\")) return;\n\nstartTimer();\nimnTrack(GAME+\"_click\");\n\ncard.classList.add(\"flip\");\n\nif(!first){\nfirst=card;\nreturn;\n}\n\nsecond=card;\nlock=true;\nmoves++;\nmovesEl.textContent=moves;\nupdateScore();\n\nif(first.dataset.icon===second.dataset.icon){\n\nimnTrack(GAME+\"_match\");\n\nflash(\"good\");\n\nsetTimeout(()=>{\nfirst.classList.add(\"done\",\"match\");\nsecond.classList.add(\"done\",\"match\");\n\nmatches++;\nfirst=null;second=null;lock=false;\n\nif(matches===18) endGame();\n\n},250);\n\n}else{\n\nimnTrack(GAME+\"_wrong\");\n\nflash(\"bad\");\n\nsetTimeout(()=>{\nfirst.classList.remove(\"flip\");\nsecond.classList.remove(\"flip\");\nfirst=null;second=null;lock=false;\n},600);\n}\n}\n\nfunction endGame(){\n\nstopTimer();\n\nconst finalScore = calcScore();\n\nimnTrack(GAME+\"_complete\",{\ngame:GAME,\nmoves,\ntime:timer,\nscore:finalScore\n});\n\nendEl.style.display=\"block\";\nendEl.textContent =\n\"Score : \"+finalScore+\" | \"+moves+\" coups | \"+timer+\"s\";\n}\n\nfunction restart(){\n\nimnTrack(GAME+\"_restart\",{game:GAME});\n\nfirst=null;second=null;lock=false;\nmatches=0;moves=0;timer=0;\n\nclearInterval(timerInterval);\ntimerInterval=null;\n\nmovesEl.textContent=0;\ntimerEl.textContent=\"0 s\";\nscoreEl.textContent=\"0\";\nendEl.style.display=\"none\";\n\nshuffle();\nrender();\n}\n\ndocument.getElementById(\"mem-restart\").onclick=restart;\n\ndocument.addEventListener(\"DOMContentLoaded\",()=>{\nshuffle();\nrender();\nimnTrack(GAME+\"_start\",{game:GAME});\n});\n\n})();\n<\/script>\n\n<style>\n.mem-wrap{\nmax-width:420px;\nmargin:0 auto;\npadding:10px;\nborder-radius:12px;\nborder:2px solid #5532F0;\ntransition:.2s;\n}\n.flash-green{box-shadow:0 0 25px #00e676;}\n.flash-red{box-shadow:0 0 25px #ff1744;}\n\n.mem-grid{\ndisplay:grid;\ngrid-template-columns:repeat(6,1fr);\ngap:6px;\n}\n\n.mem-card{aspect-ratio:1\/1;perspective:800px;}\n.mem-inner{\nwidth:100%;height:100%;position:relative;\ntransform-style:preserve-3d;transition:.4s;border-radius:8px;\n}\n.mem-card.flip .mem-inner{transform:rotateY(180deg);}\n\n.mem-front,.mem-back{\nposition:absolute;width:100%;height:100%;\ndisplay:flex;align-items:center;justify-content:center;\nborder-radius:8px;font-size:22px;backface-visibility:hidden;\n}\n\n.mem-front{background:#fff;border:2px solid #5532F0;}\n.mem-back{background:#5532F0;color:#fff;transform:rotateY(180deg);}\n\n.mem-card.match .mem-inner{\nanimation:rainbowGlow 1s infinite alternate;\n}\n@keyframes rainbowGlow{\n0%{box-shadow:0 0 10px red;}\n25%{box-shadow:0 0 10px orange;}\n50%{box-shadow:0 0 10px yellow;}\n75%{box-shadow:0 0 10px green;}\n100%{box-shadow:0 0 10px blue;}\n}\n\n.imn-btn{\nbackground:#5532F0;color:#fff;padding:10px 14px;\nborder-radius:8px;font-weight:bold;cursor:pointer;margin-top:10px;\n}\n<\/style>\n\n<\/section>\n\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>En 2026, l\u2019\u00c9tat engage un nouveau programme d\u2019entretien des routes nationales en Loire-Atlantique. Au total, 9 millions d\u2019euros seront mobilis\u00e9s pour am\u00e9liorer la s\u00e9curit\u00e9, la fluidit\u00e9 du trafic et le confort de conduite sur des axes particuli\u00e8rement fr\u00e9quent\u00e9s, notamment autour de Nantes. Ces op\u00e9rations sont pilot\u00e9es par la Direction interd\u00e9partementale des routes (Dir) Ouest, en [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6598,"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":[3326,258,5,4789,4787,4700,4788,4786],"class_list":["post-6597","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-nantes","tag-circulation-nantes","tag-loire-atlantique-2","tag-nantes","tag-peripherique-nantes","tag-rn137","tag-rn165","tag-rn249","tag-travaux-routes"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Routes nationales : 9 millions d\u2019euros investis en 2026 en Loire-Atlantique, plusieurs axes majeurs concern\u00e9s - Infos M\u00e9dia Nantes, infos locales, \u00e9v\u00e9nements et actualit\u00e9 utiles \u00e0 Nantes et ses alentours<\/title>\n<meta name=\"description\" content=\"9 millions d\u2019euros investis en 2026 pour les routes en Loire-Atlantique. 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