{"id":19914,"date":"2025-10-08T09:42:40","date_gmt":"2025-10-08T07:42:40","guid":{"rendered":"https:\/\/strettodimessina.it\/web\/?page_id=19914"},"modified":"2026-07-06T12:19:54","modified_gmt":"2026-07-06T10:19:54","slug":"why-were-the-ideas-of-an-underwater-tunnel-and-a-seabed-tunnel-rejected","status":"publish","type":"page","link":"https:\/\/strettodimessina.it\/web\/en\/faq-frequently-asked-questions-messina-strait-bridge\/why-were-the-ideas-of-an-underwater-tunnel-and-a-seabed-tunnel-rejected\/","title":{"rendered":"WHY WERE THE IDEAS OF AN UNDERWATER TUNNEL AND A SEABED TUNNEL REJECTED?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"19914\" class=\"elementor elementor-19914\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4e8d1f0 e-con-full e-flex e-con e-parent\" data-id=\"4e8d1f0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-c89f756 e-con-full e-flex e-con e-child\" data-id=\"c89f756\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-22226f0 e-con-full animated-slow e-flex e-con e-child\" data-id=\"22226f0\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39c6e63 elementor-heading__align-center animated-slow elementor-widget elementor-widget-heading\" data-id=\"39c6e63\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:400}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-975dd30 e-con-full e-flex e-con e-child\" data-id=\"975dd30\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;motion_fx_motion_fx_scrolling&quot;:&quot;yes&quot;,&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_offset&quot;:150,&quot;sticky_anchor_link_offset&quot;:240,&quot;motion_fx_devices&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_effects_offset&quot;:0}\">\n\t\t<div class=\"elementor-element elementor-element-b071c33 e-con-full e-flex e-con e-child\" data-id=\"b071c33\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-af762b0 e-con-full e-flex e-con e-child\" data-id=\"af762b0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-edd03ce elementor-widget elementor-widget-shortcode\" data-id=\"edd03ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">\t\t<div data-elementor-type=\"container\" data-elementor-id=\"29719\" class=\"elementor elementor-29719\" data-elementor-post-type=\"elementor_library\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24cd24c e-con-full e-flex e-con e-parent\" data-id=\"24cd24c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-94d6326 elementor-button-primary elementor-widget elementor-widget-button\" data-id=\"94d6326\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"elementor-button-wrapper\">\n            <a href=\"https:\/\/strettodimessina.it\/web\/en\/faq-frequently-asked-questions-messina-strait-bridge\/#sez1\" class=\"elementor-button-link elementor-button elementor-size-lg\" role=\"button\">\n                \t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">The technical plan of the Strait of Messina Bridge<\/span>\n\t\t\t\t\t<\/span>\n\t\t            <\/a>\n        <\/div>\n        \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4688006 elementor-button-primary elementor-widget elementor-widget-button\" data-id=\"4688006\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"elementor-button-wrapper\">\n            <a href=\"https:\/\/strettodimessina.it\/web\/en\/faq-frequently-asked-questions-messina-strait-bridge\/#sez2\" class=\"elementor-button-link elementor-button elementor-size-lg\" role=\"button\">\n                \t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Plan stages and roles<\/span>\n\t\t\t\t\t<\/span>\n\t\t            <\/a>\n        <\/div>\n        \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12745c3 elementor-button-primary elementor-widget elementor-widget-button\" data-id=\"12745c3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"elementor-button-wrapper\">\n            <a href=\"https:\/\/strettodimessina.it\/web\/en\/faq-frequently-asked-questions-messina-strait-bridge\/#sez3\" class=\"elementor-button-link elementor-button elementor-size-lg\" role=\"button\">\n                \t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Socio-economic aspects<\/span>\n\t\t\t\t\t<\/span>\n\t\t            <\/a>\n        <\/div>\n        \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d3bed20 elementor-button-primary elementor-widget elementor-widget-button\" data-id=\"d3bed20\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"elementor-button-wrapper\">\n            <a href=\"https:\/\/strettodimessina.it\/web\/en\/faq-frequently-asked-questions-messina-strait-bridge\/#sez4\" class=\"elementor-button-link elementor-button elementor-size-lg\" role=\"button\">\n                \t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Compulsory Purchase<\/span>\n\t\t\t\t\t<\/span>\n\t\t            <\/a>\n        <\/div>\n        \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-75330a9 elementor-widget elementor-widget-html\" data-id=\"75330a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<script>\nwindow.addEventListener('load', function() {\n    \/\/ Troviamo tutti i link dei bottoni dentro le sezioni di Elementor\n    const bottoni = document.querySelectorAll('.elementor-button');\n\n    bottoni.forEach(function(btn) {\n        btn.addEventListener('click', function() {\n            \/\/ 1. Rimuovi la classe 'tasto-selezionato' da TUTTI i bottoni nella pagina\n            bottoni.forEach(function(b) {\n                \/\/ Risaliamo fino al contenitore del widget per sicurezza\n                let widget = b.closest('.elementor-widget-button');\n                if (widget) widget.classList.remove('tasto-selezionato');\n            });\n\n            \/\/ 2. Aggiungi la classe al widget del bottone appena cliccato\n            let currentWidget = this.closest('.elementor-widget-button');\n            if (currentWidget) currentWidget.classList.add('tasto-selezionato');\n        });\n    });\n});\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3b6c029 animated-fast e-con-full e-flex e-con e-child\" data-id=\"3b6c029\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;none&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e145783 elementor-widget elementor-widget-text-editor\" data-id=\"e145783\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>The idea of building the crossing using a floating tunnel or a seabed tunnel has been thoroughly evaluated<\/strong>.<br \/>Solutions involving underwater tunnels (floating) and seabed tunnels (beneath the seafloor) were extensively analyzed during the early years of the study for a stable crossing. Both scenarios were later discarded for several reasons, each of which is summarized below.<\/p><p><strong>Seabed tunnels<\/strong><\/p><ul><li>vulnerability to seismic activity, particularly regarding deformations or ruptures of the structure due to residual ground movements\u2014even modest ones\u2014resulting from direct interference with several active faults, especially in the sea. In this scenario, the vulnerability is higher than that of the floating tunnel solution. On the other hand, a bridge is insensitive to even significant ground movements, up to approximately 1 meter;<\/li><li>considerable depth of the tunnels (up to 250 meters below sea level), requiring the construction of tunnel ramps with significant lengths and steep gradients. Given a Strait crossing of approximately 3.9 km, the road tunnel would need to extend 35 km, while the railway tunnel would span 50 km. These lengths are a result of limitations related to the gradients and the need to maintain seabed cover varying between 50 meters and 120 meters along the entire stretch. Consequently, for example, traveling between Reggio Calabria and Messina would require driving for approximately 70 km underground;<\/li><li>longer travel times;<\/li><li>difficult access for rescue or evacuation operations in case of accidents or natural disasters;<\/li><li>possible unforeseen events during the works;<\/li><li>exposure to sabotage.<\/li><\/ul><p><strong>Floating tunnels<\/strong><\/p><ul><li>very high impact on the marine environment: the placement of floating pipes at shallow depths (40-50 meters) and their anchoring to the seabed at depths exceeding 200 meters would cause substantial disturbance to flora and fauna (difficult to mitigate), as well as to sea currents;<\/li><li>uncertainties about structural safety and compliance with performance requirements.<\/li><li>lack of previous construction in areas with high seismic activity and significant sea currents, leading to uncertainty regarding construction technologies, high risks during construction, substantial costs, and difficulties in predicting outcomes;<\/li><li>maintenance uncertainties;<\/li><li>impact hazards related to sinking ships;<\/li><li>exposure to sabotage.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f966995 e-con-full e-flex e-con e-child\" data-id=\"f966995\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a5c4c01 elementor-align-center elementor-button-primary elementor-widget elementor-widget-button\" data-id=\"a5c4c01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"elementor-button-wrapper\">\n            <a href=\"https:\/\/strettodimessina.it\/web\/en\/faq-frequently-asked-questions-messina-strait-bridge\/\" class=\"elementor-button-link elementor-button elementor-size-lg\" role=\"button\">\n                \t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Torna indietro<\/span>\n\t\t\t\t\t<\/span>\n\t\t            <\/a>\n        <\/div>\n        \t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>FAQ The idea of building the crossing using a floating tunnel or a seabed tunnel has been thoroughly evaluated.Solutions involving underwater tunnels (floating) and seabed tunnels (beneath the seafloor) were extensively analyzed during the early years of the study for a stable crossing. Both scenarios were later discarded for several reasons, each of which is &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/strettodimessina.it\/web\/en\/faq-frequently-asked-questions-messina-strait-bridge\/why-were-the-ideas-of-an-underwater-tunnel-and-a-seabed-tunnel-rejected\/\" class=\"more-link\">Read More <span class=\"screen-reader-text\"> &#8220;WHY WERE THE IDEAS OF AN UNDERWATER TUNNEL AND A SEABED TUNNEL REJECTED?&#8221;<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"parent":19799,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-elementor.php","meta":{"footnotes":""},"class_list":["post-19914","page","type-page","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"The idea of building the crossing using a floating tunnel or a seabed tunnel has been thoroughly evaluated.\" \/>\n\t<meta name=\"robots\" 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