{"id":193227,"date":"2026-09-11T12:35:31","date_gmt":"2026-09-11T10:35:31","guid":{"rendered":"https:\/\/newmobility.news\/?p=193227"},"modified":"2026-09-11T11:19:46","modified_gmt":"2026-09-11T09:19:46","slug":"liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement","status":"publish","type":"post","link":"https:\/\/newmobility.news\/fr\/2026\/09\/11\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\/","title":{"rendered":"Le tramway de Li\u00e8ge co\u00fbtera 1,3 milliard d'euros apr\u00e8s des ann\u00e9es de mauvaise gestion"},"content":{"rendered":"<p>Le co\u00fbt total de la nouvelle ligne de tramway \u00e0 Li\u00e8ge s\u2019\u00e9l\u00e8vera \u00e0 1,3 milliard d\u2019euros. Telle est la conclusion \u00e0 laquelle est parvenue la Cour des comptes dans un nouveau rapport. Bien que ce montant ne soit \u2018 que \u2019 sup\u00e9rieur de 139 millions d\u2019euros \u00e0 celui pr\u00e9vu lors de la signature du contrat de PPP en 2019, il repr\u00e9sente le double de l\u2019estimation initiale des co\u00fbts de ce m\u00e9gaprojet.<\/p>\n<p>Dans ce rapport, l'organisme de contr\u00f4le soul\u00e8ve \u00e9galement d'autres points critiques, tels que des d\u00e9faillances de gestion au d\u00e9but du projet, un contrat mal r\u00e9dig\u00e9 et un suivi insuffisant pendant la mise en \u0153uvre.<\/p>\n<h4>Une planification d\u00e9faillante d\u00e8s le d\u00e9part<\/h4>\n<p>Depuis avril de l'ann\u00e9e derni\u00e8re \u2013 avec toutefois un retard de deux ans et demi \u2013, un tram circule \u00e0 Li\u00e8ge, reliant la gare au centre-ville et \u00e0 d'autres destinations. Et c'est un v\u00e9ritable succ\u00e8s : avec des pics de 4 000 \u00e0 5 000 passagers par heure, l'op\u00e9rateur LETEC a transport\u00e9 12 millions de passagers au cours de sa premi\u00e8re ann\u00e9e d'exploitation.<\/p>\n<p>Cependant, des facteurs tels que des co\u00fbts nettement sup\u00e9rieurs aux pr\u00e9visions avaient d\u00e9j\u00e0 suscit\u00e9 une vague de critiques \u00e0 l'encontre du projet. Le rapport de la Cour des comptes sur la conception et la gestion du projet apporte d\u00e9sormais un \u00e9clairage objectif qui vient \u00e9tayer ces critiques.<\/p>\n<p>Le projet a \u00e9t\u00e9 annonc\u00e9 en 2008 et approuv\u00e9 par le gouvernement wallon en 2009. La d\u00e9cision et la construction finale de la ligne de tramway, dans le cadre d'un partenariat public-priv\u00e9, se sont d\u00e9roul\u00e9es de 2019 \u00e0 2025.<\/p>\n<p>La Cour des comptes affirme aujourd\u2019hui que la d\u00e9cision de construire un tramway et le choix du trac\u00e9 n\u2019ont pas \u00e9t\u00e9 suffisamment m\u00fbrement r\u00e9fl\u00e9chis d\u00e8s le d\u00e9part, sans parler de la prise en compte de la faisabilit\u00e9 technique et du budget, et qu\u2019il n\u2019y a pratiquement pas eu d\u2019\u00e9tude sur la mani\u00e8re dont le r\u00e9seau de bus devrait \u00eatre adapt\u00e9. Le trac\u00e9 lui-m\u00eame n\u2019\u00e9tait pas non plus bien pens\u00e9 ; les prolongements pr\u00e9vus ont m\u00eame \u00e9t\u00e9 abandonn\u00e9s en 2024.<\/p>\n<p>Pour financer ce projet, la Wallonie a opt\u00e9 pour un partenariat public-priv\u00e9 (PPP) avec le groupement d'entreprises charg\u00e9 de la construction de Tram\u2019Ardent (Colas, CAF, DIF), notamment afin d'\u00e9taler l'impact budg\u00e9taire dans le temps.<\/p>\n<p>Selon la Cour des comptes, cette d\u00e9cision a \u00e9t\u00e9 prise sans qu'une analyse co\u00fbts-avantages ait \u00e9t\u00e9 r\u00e9alis\u00e9e afin de d\u00e9terminer s'il s'agissait l\u00e0 de la meilleure utilisation des fonds publics. De plus, en l'absence de cadre juridique r\u00e9gissant les contrats de partenariat public-priv\u00e9 (PPP), la Cour recommande d'en mettre un en place.<\/p>\n<h4>Manque de contr\u00f4le pendant les travaux<\/h4>\n<p>La Cour des comptes constate \u00e9galement que le suivi de l'ex\u00e9cution des travaux proprement dits a \u00e9t\u00e9 insuffisant. Par exemple, les contrats relatifs \u00e0 l'assistance technique et au personnel affect\u00e9 au projet ont parfois \u00e9t\u00e9 modifi\u00e9s de mani\u00e8re irr\u00e9guli\u00e8re, et l'\u00e9valuation des risques li\u00e9e \u00e0 la gestion du projet a \u00e9t\u00e9 soumise en retard, \u00e9tait mal structur\u00e9e et n'a pas \u00e9t\u00e9 mise \u00e0 jour.<\/p>\n<p>De plus, l'externalisation de la gestion du projet a entra\u00een\u00e9 des co\u00fbts suppl\u00e9mentaires et comportait un risque de conflits d'int\u00e9r\u00eats. Enfin, la facture s'av\u00e8re encore plus \u00e9lev\u00e9e que pr\u00e9vu. Selon des estimations ant\u00e9rieures, les co\u00fbts de construction avaient d\u00e9j\u00e0 atteint 785 millions d'euros, soit environ 250 millions d'euros de plus que le budget initial.<\/p>\n<p>Cependant, la Cour des comptes calcule d\u00e9sormais le co\u00fbt total du programme jusqu\u2019en 2052 \u2013 date d\u2019expiration de la concession \u2013 et aboutit \u00e0 un chiffre d\u2019au moins 1,3 milliard d\u2019euros, soit environ 130 millions de plus que l\u2019estimation contractuelle initiale de 2019 : 263,1 millions d'euros d\u00e9j\u00e0 d\u00e9pens\u00e9s d'ici fin 2025, auxquels s'ajoutent au moins 990,5 millions d'euros de co\u00fbts futurs. Et m\u00eame ce chiffre reste encore provisoire, car les co\u00fbts li\u00e9s aux litiges en cours n'ont pas encore \u00e9t\u00e9 pris en compte.<\/p>\n<h4>Le ministre assure que des ajustements seront apport\u00e9s<\/h4>\n<p>Une \u00e9tude men\u00e9e par le professeur Bent Flyvbjerg, de l'universit\u00e9 d'Oxford, portant sur plus de 16 000 projets dans 136 pays, montre que 0 m\u00e9gaprojets sur 10 d\u00e9passent le budget pr\u00e9vu, le calendrier pr\u00e9vu, ou les deux. En ce qui concerne plus particuli\u00e8rement les projets ferroviaires, le d\u00e9passement de co\u00fbt moyen s'\u00e9l\u00e8ve \u00e0 44,71 TP3T, calcul\u00e9 \u00e0 partir du moment o\u00f9 la d\u00e9cision de construction est prise.<\/p>\n<p>Le d\u00e9passement de budget de 250 millions d'euros du projet de tramway de Li\u00e8ge s'inscrit donc \u2013 aussi regrettable soit-il \u2013 dans la norme statistique pour ce type de projet.<\/p>\n<p>Cependant, les Li\u00e9geois b\u00e9n\u00e9ficient d'un service de tram moins important que pr\u00e9vu, alors qu'ils paient plus cher. Et le rapport de la Cour des comptes montre d\u00e9sormais qu'il ne s'agit pas simplement des al\u00e9as habituels li\u00e9s aux m\u00e9gaprojets, mais bien d'erreurs administratives identifiables.<\/p>\n<p>Dans un communiqu\u00e9, le ministre wallon de la Mobilit\u00e9, Fran\u00e7ois Desquesnes (Les Engag\u00e9s) a soulign\u00e9 que plusieurs des recommandations formul\u00e9es par la Cour des comptes sont d\u00e9j\u00e0 mises en \u0153uvre dans la convention conclue entre la Wallonie et la Soci\u00e9t\u00e9 wallonne des transports (OTW), ainsi que dans le d\u00e9cret relatif aux transports publics de voyageurs en R\u00e9gion wallonne, qui doit faire l'objet d'une r\u00e9vision prochainement.<\/p>","protected":false},"excerpt":{"rendered":"<p>The total cost of the new tram line in Li\u00e8ge will amount to 1.3 billion euros. That is the conclusion reached by the Court of Auditors in a new report. While this is &#8216;only&#8217; a good 139 million euros higher than when the PPP contract was signed in 2019, it represents a doubling compared to [&hellip;]<\/p>\n","protected":false},"author":164,"featured_media":193261,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"{title}\r\n\r\n{excerpt}\r\n\r\n{url}","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"_wpas_customize_per_network":false,"jetpack_post_was_ever_published":false},"categories":[77170,7,26,4],"tags":[],"class_list":["post-193227","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-belgium","category-mobility","category-public-transport","category-top-stories-today"],"acf":[],"featured_image_urls_v2":{"full":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=2440%2C1512&ssl=1",2440,1512,false],"thumbnail":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=150%2C150&ssl=1",150,150,true],"medium":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=300%2C186&ssl=1",300,186,true],"medium_large":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=640%2C397&ssl=1",640,397,true],"large":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=640%2C397&ssl=1",640,397,true],"1536x1536":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=1536%2C952&ssl=1",1536,952,true],"2048x2048":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=2048%2C1269&ssl=1",2048,1269,true],"trp-custom-language-flag":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=18%2C12&ssl=1",18,12,true],"related-thumb":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=640%2C480&ssl=1",640,480,true],"gform-image-choice-sm":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=300%2C300&ssl=1",300,300,true],"gform-image-choice-md":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=400%2C400&ssl=1",400,400,true],"gform-image-choice-lg":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=600%2C600&ssl=1",600,600,true],"mailchimp":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?fit=560%2C347&ssl=1",560,347,true],"unipress-phone":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=640%2C100&ssl=1",640,100,true],"unipress-tablet":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=1536%2C240&ssl=1",1536,240,true],"unipress-tablet-portrait":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=1536%2C180&ssl=1",1536,180,true],"unipress-tablet-landscape":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=2048%2C180&ssl=1",2048,180,true],"unipress-smartphone":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=1080%2C168&ssl=1",1080,168,true],"unipress-wide-screen":["https:\/\/i0.wp.com\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88.png?resize=2440%2C180&ssl=1",2440,180,true]},"post_excerpt_stackable_v2":"<p>The total cost of the new tram line in Li\u00e8ge will amount to 1.3 billion euros. That is the conclusion reached by the Court of Auditors in a new report. While this is &#8216;only&#8217; a good 139 million euros higher than when the PPP contract was signed in 2019, it represents a doubling compared to the initial cost estimate for the megaproject. In the report, the oversight body also cites other points of criticism, such as historical mismanagement at the start of the project, a poorly drafted contract, and inadequate oversight during implementation. Flawed planning from day one Since April&hellip;<\/p>\n","category_list_v2":"<a href=\"https:\/\/newmobility.news\/fr\/category\/belgium\/\" rel=\"category tag\">Belgium<\/a>, <a href=\"https:\/\/newmobility.news\/fr\/category\/mobility\/\" rel=\"category tag\">Mobility<\/a>, <a href=\"https:\/\/newmobility.news\/fr\/category\/public-transport\/\" rel=\"category tag\">Public transport<\/a>, <a href=\"https:\/\/newmobility.news\/fr\/category\/top-stories-today\/\" rel=\"category tag\">Top Stories Today<\/a>","author_info_v2":{"name":"Luc Joris","url":"https:\/\/newmobility.news\/fr\/author\/belga-5\/"},"comments_num_v2":"0 comments","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Li\u00e8ge tram to cost \u20ac1.3 billion after years of mismanagement - newmobility.news<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/newmobility.news\/fr\/2026\/09\/11\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Li\u00e8ge tram to cost \u20ac1.3 billion after years of mismanagement - newmobility.news\" \/>\n<meta property=\"og:description\" content=\"The total cost of the new tram line in Li\u00e8ge will amount to 1.3 billion euros. That is the conclusion reached by the Court of Auditors in a new report. While this is &#8216;only&#8217; a good 139 million euros higher than when the PPP contract was signed in 2019, it represents a doubling compared to [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/newmobility.news\/fr\/2026\/09\/11\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\/\" \/>\n<meta property=\"og:site_name\" content=\"newmobility.news\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/search\/top\/?q=newmobility.news\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-11T10:35:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/newmobility.news\/wp-content\/uploads\/2026\/09\/Untitled88-1024x635.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"635\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Luc Joris\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@jorisvry\" \/>\n<meta name=\"twitter:site\" content=\"@jorisvry\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Luc Joris\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture est.\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/09\\\/11\\\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/09\\\/11\\\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\\\/\"},\"author\":{\"name\":\"Luc Joris\",\"@id\":\"https:\\\/\\\/newmobility.news\\\/#\\\/schema\\\/person\\\/9b4a04002179d83e5be74f13c664b722\"},\"headline\":\"Li\u00e8ge tram to cost \u20ac1.3 billion after years of mismanagement\",\"datePublished\":\"2026-09-11T10:35:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/09\\\/11\\\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\\\/\"},\"wordCount\":714,\"publisher\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/09\\\/11\\\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/newmobility.news\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/Untitled88.png?fit=2440%2C1512&ssl=1\",\"articleSection\":[\"Belgium\",\"Mobility\",\"Public transport\",\"Top Stories Today\"],\"inLanguage\":\"fr-BE\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/09\\\/11\\\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\\\/\",\"url\":\"https:\\\/\\\/newmobility.news\\\/2026\\\/09\\\/11\\\/liege-tram-to-cost-e1-3-billion-after-years-of-mismanagement\\\/\",\"name\":\"Li\u00e8ge tram to cost \u20ac1.3 billion after years of mismanagement - 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