{"id":18852,"date":"2026-08-04T06:45:16","date_gmt":"2026-08-04T10:45:16","guid":{"rendered":"https:\/\/batisseurs-outremer.com\/?p=18852"},"modified":"2026-08-04T07:41:57","modified_gmt":"2026-08-04T11:41:57","slug":"travaux-routiers-comment-reduire-lempreinte-carbone-des-chantiers","status":"publish","type":"post","link":"https:\/\/batisseurs-outremer.com\/en\/travaux-routiers-comment-reduire-lempreinte-carbone-des-chantiers\/","title":{"rendered":"Road Construction: How to Reduce the Carbon Footprint of Construction Sites"},"content":{"rendered":"<div class=\"qMYqUG_convSearchResultHighlightRoot\">\n<div class=\"\" data-turn-id-container=\"request-WEB:f3ca804f-ad9a-4af5-8253-34da16fe6b72-7\" data-is-intersecting=\"true\">\n<section class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:f3ca804f-ad9a-4af5-8253-34da16fe6b72-7\" data-turn-id-container=\"request-WEB:f3ca804f-ad9a-4af5-8253-34da16fe6b72-7\" data-testid=\"conversation-turn-16\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" data-conversation-screenshot-content=\"\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"2c9e4c64-2f6b-4122-b5e6-cdd52c3d5012\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-6-thinking\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\">\n<div class=\"qMYqUG_convSearchResultHighlightRoot\">\n<div class=\"\" data-turn-id-container=\"request-WEB:f3ca804f-ad9a-4af5-8253-34da16fe6b72-9\" data-is-intersecting=\"true\">\n<section class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [&amp;:has([data-writing-block])&gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:f3ca804f-ad9a-4af5-8253-34da16fe6b72-9\" data-turn-id-container=\"request-WEB:f3ca804f-ad9a-4af5-8253-34da16fe6b72-9\" data-testid=\"conversation-turn-20\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-8 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\">\n<div class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" data-conversation-screenshot-content=\"\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"53d3eb1c-8517-44e4-961a-ba3379a46551\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-6-thinking\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\">\n<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"80\" data-end=\"372\"><em><strong>Construire ou r\u00e9nover une route mobilise des mat\u00e9riaux \u00e9nergivores, auxquels s\u2019ajoutent leur transport et l\u2019usage d\u2019engins encore largement d\u00e9pendants des carburants fossiles. Dans une publication parue en juillet 2026, le Cerema pr\u00e9sente les leviers \u00e0 la disposition des collectivit\u00e9s pour r\u00e9duire cette empreinte. Selon les donn\u00e9es de Carbone 4 et de la FNTP reprises dans le document, les travaux publics li\u00e9s aux infrastructures de transport et aux r\u00e9seaux repr\u00e9sentent 3,5 % des \u00e9missions carbone de la France, au-del\u00e0 des seules op\u00e9rations routi\u00e8res.<\/strong><\/em><\/p>\n<hr \/>\n<h2 data-section-id=\"1mvgtfh\" data-start=\"929\" data-end=\"981\"><strong>Une empreinte pr\u00e9sente \u00e0 chaque \u00e9tape du chantier<\/strong><\/h2>\n<p data-start=\"983\" data-end=\"1251\">Les \u00e9missions commencent bien avant l\u2019arriv\u00e9e des mat\u00e9riaux sur le terrain. La production du bitume, du ciment ou de la chaux repose sur des proc\u00e9d\u00e9s industriels particuli\u00e8rement \u00e9nergivores. La fabrication des b\u00e9tons et des enrob\u00e9s constitue un autre poste important.<\/p>\n<p data-start=\"1253\" data-end=\"1506\">Le bilan s\u2019alourdit ensuite avec <strong>l\u2019acheminement des mati\u00e8res premi\u00e8res et des mat\u00e9riaux jusqu\u2019au chantier.<\/strong> Les camions, les v\u00e9hicules de service et les engins utilis\u00e9s pour la mise en \u0153uvre fonctionnent encore majoritairement avec des \u00e9nergies fossiles.<\/p>\n<p data-start=\"1508\" data-end=\"1715\">Pour le Cerema, la r\u00e9duction des \u00e9missions doit donc porter sur l\u2019ensemble de la cha\u00eene : les mat\u00e9riaux choisis, leur mode de fabrication, les distances parcourues et l\u2019\u00e9nergie consomm\u00e9e pendant les travaux.<\/p>\n<h4 data-section-id=\"1sixu85\" data-start=\"1717\" data-end=\"1775\"><\/h4>\n<h2 data-section-id=\"1sixu85\" data-start=\"1717\" data-end=\"1775\"><strong>Le carbone entre dans les obligations des collectivit\u00e9s<\/strong><\/h2>\n<p data-start=\"1777\" data-end=\"1987\"><strong>Les infrastructures routi\u00e8res<\/strong> occupent une place importante dans les d\u00e9penses d\u2019investissement des collectivit\u00e9s. Leur empreinte ne peut donc plus \u00eatre \u00e9cart\u00e9e des strat\u00e9gies locales de r\u00e9duction des \u00e9missions.<\/p>\n<p data-start=\"1989\" data-end=\"2405\">Depuis le 1er janvier 2025, les <strong>collectivit\u00e9s de plus de 50 000 habitants<\/strong> doivent int\u00e9grer leurs \u00e9missions indirectes significatives dans leur bilan des \u00e9missions de gaz \u00e0 effet de serre, ou <strong>BEGES<\/strong>.<\/p>\n<p data-start=\"1989\" data-end=\"2405\">Pour les travaux routiers, cela suppose notamment de prendre en compte la fabrication et le transport des mat\u00e9riaux ainsi que l\u2019utilisation des engins et des v\u00e9hicules de chantier.<\/p>\n<p data-start=\"2407\" data-end=\"2773\"><strong>La commande publique<\/strong> est \u00e9galement concern\u00e9e. La <strong>loi Climat et R\u00e9silience<\/strong> impose l\u2019int\u00e9gration d\u2019au moins un crit\u00e8re environnemental dans les march\u00e9s publics, au plus tard en ao\u00fbt 2026.<\/p>\n<p data-start=\"2407\" data-end=\"2773\">Les collectivit\u00e9s de<strong> plus de 3 500 habitants<\/strong> doivent par ailleurs pr\u00e9senter une annexe environnementale dans leurs comptes annuels afin d\u2019\u00e9valuer l\u2019impact de leurs investissements.<\/p>\n<p data-start=\"2775\" data-end=\"2988\">L\u2019effort attendu est cons\u00e9quent. La feuille de route de Routes de France vise <strong>une r\u00e9duction de 57 % de l\u2019empreinte carbone d\u2019une tonne d\u2019enrob\u00e9 d\u2019ici 2030<\/strong>, par rapport \u00e0 1990.<\/p>\n<h4 data-section-id=\"1cau6e6\" data-start=\"2990\" data-end=\"3043\"><\/h4>\n<h2 data-section-id=\"1cau6e6\" data-start=\"2990\" data-end=\"3043\"><strong>Entretenir plus t\u00f4t pour \u00e9viter les travaux lourds<\/strong><\/h2>\n<p data-start=\"3045\" data-end=\"3205\">La d\u00e9carbonation ne repose pas uniquement sur de nouveaux mat\u00e9riaux ou de nouveaux engins. Elle commence aussi par <strong>une meilleure connaissance du r\u00e9seau routier.<\/strong><\/p>\n<p data-start=\"3207\" data-end=\"3526\"><em>L\u2019\u00e9tat des chauss\u00e9es, leur trafic, leur fonction et leur dur\u00e9e de vie pr\u00e9visible doivent permettre aux gestionnaires de programmer les interventions au bon moment.<\/em> Une r\u00e9paration l\u00e9g\u00e8re r\u00e9alis\u00e9e suffisamment t\u00f4t peut \u00e9viter une r\u00e9habilitation plus lourde, n\u00e9cessitant davantage de mat\u00e9riaux, de transports et d\u2019\u00e9nergie.<\/p>\n<p data-start=\"3528\" data-end=\"3736\">Selon une estimation de <strong>Logiroad<\/strong> reprise par le Cerema, une maintenance pr\u00e9ventive et r\u00e9guli\u00e8re pourrait <strong>r\u00e9duire de 35 % les \u00e9missions carbone li\u00e9es aux travaux routiers.<\/strong><\/p>\n<p data-start=\"3738\" data-end=\"4033\">Le D\u00e9partement de Loire-Atlantique s\u2019appuie ainsi sur un mod\u00e8le pr\u00e9dictif pour anticiper la fin de vie des structures de chauss\u00e9es. L\u2019outil doit l\u2019aider \u00e0 pr\u00e9voir les futures r\u00e9habilitations et \u00e0 programmer les budgets avant que l\u2019\u00e9tat du r\u00e9seau ne n\u00e9cessite des interventions de grande ampleur.<\/p>\n<h4 data-section-id=\"7d9pn7\" data-start=\"4035\" data-end=\"4087\"><\/h4>\n<h2 data-section-id=\"7d9pn7\" data-start=\"4035\" data-end=\"4087\"><strong>Recyclage, basses temp\u00e9ratures et circuits courts<\/strong><\/h2>\n<p data-start=\"4089\" data-end=\"4315\">Lorsque les travaux deviennent n\u00e9cessaires, plusieurs solutions peuvent \u00eatre combin\u00e9es. <strong>L\u2019utilisation de mat\u00e9riaux recycl\u00e9s<\/strong> r\u00e9duit le recours aux ressources extraites en carri\u00e8re et limite la fabrication de constituants neufs.<\/p>\n<p data-start=\"4317\" data-end=\"4609\"><strong>L\u2019abaissement des temp\u00e9ratures de fabrication des enrob\u00e9s<\/strong> diminue, de son c\u00f4t\u00e9, la consommation \u00e9nerg\u00e9tique des installations. Le retraitement en place \u00e0 froid permet \u00e9galement, lorsque les conditions techniques s\u2019y pr\u00eatent, de r\u00e9utiliser une partie des mat\u00e9riaux directement sur le chantier.<\/p>\n<p data-start=\"4611\" data-end=\"4937\"><strong>Le transport<\/strong> repr\u00e9sente un autre levier. Le Cerema recommande de privil\u00e9gier les carri\u00e8res locales et les plateformes de granulats recycl\u00e9s situ\u00e9es \u00e0 proximit\u00e9 des op\u00e9rations. Pour les volumes importants et les longues distances, le rail ou la voie fluviale peuvent \u00eatre envisag\u00e9s lorsque ces infrastructures sont disponibles.<\/p>\n<p data-start=\"4939\" data-end=\"5317\">Les engins \u00e9lectriques ou hybrides, les v\u00e9hicules fonctionnant avec des biocarburants et les br\u00fbleurs utilisant des \u00e9nergies moins carbon\u00e9es compl\u00e8tent cette \u00e9volution. Le choix doit toutefois tenir compte de <strong>la dur\u00e9e de vie de l\u2019ouvrage. <\/strong><\/p>\n<p data-start=\"4939\" data-end=\"5317\">Une solution l\u00e9g\u00e8rement plus \u00e9mettrice au d\u00e9part peut rester pertinente si elle \u00e9vite des interventions r\u00e9p\u00e9t\u00e9es dans les ann\u00e9es suivantes.<\/p>\n<h4 data-section-id=\"3d8flv\" data-start=\"5319\" data-end=\"5373\"><\/h4>\n<h2 data-section-id=\"3d8flv\" data-start=\"5319\" data-end=\"5373\"><strong>Des engagements mesurables dans les march\u00e9s publics<\/strong><\/h2>\n<p data-start=\"5375\" data-end=\"5667\"><strong>Les objectifs environnementaux<\/strong> doivent enfin \u00eatre traduits dans les cahiers des charges. Les collectivit\u00e9s peuvent demander un bilan carbone pr\u00e9visionnel, fixer des seuils, valoriser l\u2019utilisation de mat\u00e9riaux recycl\u00e9s ou prendre en compte les modes de transport propos\u00e9s par les entreprises.<\/p>\n<p data-start=\"5669\" data-end=\"6065\">Sur la rocade de Bordeaux, <strong>la DREAL Nouvelle-Aquitaine<\/strong> a int\u00e9gr\u00e9 des exigences de ce type dans ses march\u00e9s de travaux. Les entreprises retenues ont utilis\u00e9 des mat\u00e9riaux recycl\u00e9s, abaiss\u00e9 les temp\u00e9ratures de fabrication des enrob\u00e9s et choisi le transport ferroviaire pour les granulats. Un syst\u00e8me de primes et de p\u00e9nalit\u00e9s accompagnait les engagements pris.<\/p>\n<p data-start=\"6067\" data-end=\"6456\" data-is-last-node=\"\" data-is-only-node=\"\"><em>La r\u00e9duction de l\u2019empreinte des travaux routiers se pr\u00e9pare ainsi bien avant l\u2019ouverture du chantier. Elle d\u00e9pend de la connaissance du r\u00e9seau, du calendrier d\u2019entretien, des choix techniques et de la mani\u00e8re dont les march\u00e9s sont r\u00e9dig\u00e9s puis contr\u00f4l\u00e9s. <\/em><\/p>\n<p data-start=\"6067\" data-end=\"6456\" data-is-last-node=\"\" data-is-only-node=\"\"><strong>Le carbone<\/strong> devient progressivement un crit\u00e8re de d\u00e9cision \u00e0 part enti\u00e8re, aux c\u00f4t\u00e9s du co\u00fbt, de la durabilit\u00e9 et du niveau de service.<\/p>\n<hr \/>\n<p data-start=\"6067\" data-end=\"6456\" data-is-last-node=\"\" data-is-only-node=\"\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-18876 aligncenter\" src=\"https:\/\/i0.wp.com\/batisseurs-outremer.com\/wp-content\/uploads\/2026\/08\/image_2026-08-03_134113309.png?resize=374%2C123&#038;ssl=1\" alt=\"travaux routiers\" width=\"374\" height=\"123\" srcset=\"https:\/\/i0.wp.com\/batisseurs-outremer.com\/wp-content\/uploads\/2026\/08\/image_2026-08-03_134113309.png?w=374&amp;ssl=1 374w, https:\/\/i0.wp.com\/batisseurs-outremer.com\/wp-content\/uploads\/2026\/08\/image_2026-08-03_134113309.png?resize=150%2C49&amp;ssl=1 150w, https:\/\/i0.wp.com\/batisseurs-outremer.com\/wp-content\/uploads\/2026\/08\/image_2026-08-03_134113309.png?resize=300%2C99&amp;ssl=1 300w\" sizes=\"auto, (max-width: 374px) 100vw, 374px\" \/><\/p>\n<p style=\"text-align: center;\" data-start=\"6067\" data-end=\"6456\" data-is-last-node=\"\" data-is-only-node=\"\"><em><strong>Source :<\/strong> <a href=\"https:\/\/batisseurs-outremer.com\/wp-content\/uploads\/2026\/08\/Decarboner-les-travaux-routiers_Cerema_web_pap.pdf\">Cerema &#8211; D\u00c9CARBONER LES TRAVAUX ROUTIERS<\/a><\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Construire ou r\u00e9nover une route mobilise des mat\u00e9riaux \u00e9nergivores, auxquels s\u2019ajoutent leur transport et l\u2019usage d\u2019engins encore largement d\u00e9pendants des carburants fossiles. Dans une publication parue en juillet 2026, le Cerema pr\u00e9sente les leviers \u00e0 la disposition des collectivit\u00e9s pour r\u00e9duire cette empreinte. Selon les donn\u00e9es de Carbone 4 et de la FNTP reprises dans [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":18878,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[29,32],"tags":[320,797,547,3713,558,3712,3711,308,3710],"class_list":["post-18852","post","type-post","status-publish","format-standard","has-post-thumbnail","category-national","category-solutions","tag-cerema","tag-collectivites","tag-decarbonation","tag-entretien-routier","tag-marches-publics","tag-materiaux-recycles","tag-routes-bas-carbone","tag-transition-ecologique","tag-travaux-routiers"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Le Cerema pr\u00e9sente les solutions permettant aux collectivit\u00e9s de r\u00e9duire l\u2019empreinte 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