{"id":10295,"date":"2008-01-08T12:00:00","date_gmt":"2008-01-08T12:00:00","guid":{"rendered":"https:\/\/www.systra.com\/ibt\/?post_type=projects&#038;p=10295"},"modified":"2026-08-03T19:14:11","modified_gmt":"2026-08-03T19:14:11","slug":"ligne-legere-link-de-sound-transit-seattle-washington","status":"publish","type":"projects","link":"https:\/\/www.systra.com\/ibt\/fr\/project\/sound-transit-link-light-rail-seattle-washington\/","title":{"rendered":"Sound Transit Link Light Rail \u2013 Seattle, Washington"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:451px\"><div class=\"content-top-project\">\n    <div class=\"content-top-details\">\n        <svg class=\"icon-sprite details-logo\"><use xlink:href=\"#icon_deco_systra_blanc\" \/>\n        <div class=\"title\">Technical details<\/div>\n        \t        <div class=\"single-content\">\n\t            <div class=\"subtitle\">Customer<\/div>\n\t            <div class=\"desc\">Central Puget Sound Regional Transit Authority (Sound Transit)<\/div>\n\t        <\/div>\n                    <div class=\"single-content\">\n                <div class=\"subtitle\">Dates<\/div>\n                <div class=\"desc\"><p>Fin des travaux : 2008 <\/p>\n<\/div>\n            <\/div>\n                    <div class=\"single-content\">\n                <div class=\"subtitle\">Localisation<\/div>\n                <div class=\"desc\">Seattle, Washington<\/div>\n            <\/div>\n                    <div class=\"single-content\">\n                <div class=\"subtitle\">Partners<\/div>\n                <div class=\"desc\">Entrepreneur : PCL, Consultant principal : Hatch\/Mott McDonald <\/div>\n            <\/div>\n                    <div class=\"single-content\">\n                <div class=\"subtitle\">Activity<\/div>\n                <div class=\"desc\">R\u00f4le de SYSTRA IBT : Consultant en conception de ponts, conception d\u00e9taill\u00e9e du viaduc et supervision de la construction. <\/div>\n            <\/div>\n           \n            \n    <\/div>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover alignleft is-light\" style=\"min-height:138px;aspect-ratio:unset;\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-pale-mauve-background-color has-background-dim-100 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h5 id=\"h-marche-de-type-conception-soumission-construction-design-bid-build\" class=\"wp-block-heading has-dirty-purple-color has-text-color has-medium-font-size\">March\u00e9 de type conception\u2013soumission\u2013construction (Design-Bid-Build)<\/h5>\n\n\n\n<div style=\"height:12px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Port\u00e9e principale : <\/strong>106,7 m (350 pi) max, 36,6 m (120 pi) typique<br><strong>Longueur du pont : <\/strong>6,4 km (4 mi)<br><strong>Largeur : <\/strong>8,1 m (26,5 pi)<\/p>\n<\/div><\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-dusty-blue-color has-text-color wp-block-paragraph\"><strong>Le projet de m\u00e9tro l\u00e9ger Sound Transit Link comprend un tron\u00e7on de 8 km (5 mi), reliant Boeing Field \u00e0 l\u2019a\u00e9roport Seattle-Tacoma. Il comprend 6,4 km (4 mi) de viaduc supportant une double voie ferr\u00e9e avec des rails soud\u00e9s en continu reposant sur la superstructure. Trois stations sont strat\u00e9giquement implant\u00e9es le long du trac\u00e9, toutes situ\u00e9es dans une zone \u00e9cologiquement sensible.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La superstructure est constitu\u00e9e d\u2019une poutre-caisson \u00e0 voussoir en b\u00e9ton pr\u00e9fabriqu\u00e9 avec des port\u00e9es typiques de 36,6 m (120 pi). Trois structures \u00e0 longue port\u00e9e, avec des trav\u00e9es variant de 67 m \u00e0 106,6 m (220 pi \u00e0 350 pi), ont \u00e9t\u00e9 n\u00e9cessaires afin d\u2019enjamber l\u2019autoroute I-5, la ligne ferroviaire BNSF et la rivi\u00e8re Duwamish. Une construction \u00e0 l\u2019aide d\u2019un portique de lancement a permis de minimiser l\u2019impact sur le trafic et l\u2019environnement sensible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une section transversale triangulaire unique en forme de V a \u00e9t\u00e9 sp\u00e9cialement con\u00e7ue pour ce projet. Cette conception a permis d\u2019optimiser les quantit\u00e9s de b\u00e9ton composant la superstructure et de r\u00e9duire l\u2019impact visuel depuis le sol. La forme des voussoirs de la superstructure a \u00e9t\u00e9 simplifi\u00e9e gr\u00e2ce \u00e0 l\u2019\u00e9limination des diaphragmes vis-\u00e0-vis des blocs de<br>d\u00e9viation des c\u00e2bles de post-tension (PT). Des diaphragmes ext\u00e9rieurs ont \u00e9t\u00e9 utilis\u00e9s au niveau des voussoirs de piles pour assurer la stabilit\u00e9 transversale et transf\u00e9rer les efforts sismiques aux appuis situ\u00e9s au sommet des piles. La partie inf\u00e9rieure du diaphragme a \u00e9t\u00e9 maintenue \u00e0 l&#8217;horizontale afin d&#8217;\u00e9viter d&#8217;avoir recours \u00e0 des socles de roulements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les colonnes ont \u00e9t\u00e9 con\u00e7ues pour \u00e9pouser la forme des diaphragmes ext\u00e9rieurs au niveau des voussoirs de piles, donnant ainsi l\u2019impression que la superstructure repose sur un berceau. Des parapets l\u00e9g\u00e8rement courb\u00e9s ont \u00e9t\u00e9 utilis\u00e9s de chaque c\u00f4t\u00e9 de la superstructure. La plupart des colonnes reposent sur un pieu for\u00e9 unique de 3 m (10 pi) de diam\u00e8tre afin de r\u00e9duire l\u2019impact des travaux sur l\u2019emprise. L\u2019offre du constructeur retenu \u00e9tait inf\u00e9rieure de 25 millions de dollars US \u00e0 l\u2019estimation du client.<\/p>\n\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-media-text is-stacked-on-mobile is-style-offer-without-rail\" style=\"grid-template-columns:35% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"784\" src=\"https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-1024x784.png\" alt=\"\" class=\"wp-image-1139 size-full\" srcset=\"https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-1024x784.png 1024w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-300x230.png 300w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-768x588.png 768w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-1536x1177.png 1536w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-474x363.png 474w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-1700x1302.png 1700w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-1352x1036.png 1352w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-800x613.png 800w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-180x138.png 180w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-153x117.png 153w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2-230x176.png 230w, https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/acec-sound-transit09_2.png 1833w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-dirty-purple-color has-text-color wp-block-paragraph\"><strong>En reconnaissance de l\u2019expertise technique de l\u2019entreprise en ing\u00e9nierie des ponts, ce projet a re\u00e7u la prestigieuse distinction 2009 ACEC Engineering Excellence National Recognition Award.<\/strong><\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 id=\"h-distinctions-supplementaires\" class=\"wp-block-heading has-medium-font-size\">Distinctions suppl\u00e9mentaires<\/h2>\n\n\n\n<ul class=\"wp-block-list is-style-default\">\n<li><strong>2010 PCA \u2013<\/strong> Concrete Bridge Award of Excellence<\/li>\n\n\n\n<li><strong>2009 ASBI \u2013 <\/strong>Bridge Award of Excellence<\/li>\n\n\n\n<li><strong>2009 ACEC California<strong> \u2013 <\/strong><\/strong>Engineering Excellence Honor Award<\/li>\n\n\n\n<li><strong>2009 ACEC \u2013 <\/strong>Engineering Excellence Small Firm Honor Award<\/li>\n\n\n\n<li><strong>2009 PCI \u2013 <\/strong>Excellence in Engineering and Construction Design Award<\/li>\n\n\n\n<li><strong>2008 Washington Aggregates and Concrete Association \u2013<\/strong> Excellence in Concrete Construction<\/li>\n\n\n\n<li><strong>2007 AASHTO \u2013 <\/strong>Value Engineering Honorable Mention<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-slider-images\">\n            <h2 class=\"h2like\">Projet en vedette<\/h2>\n        <div class=\"wrapper-content-slider-images\">\n                    <ul class=\"content-slider-images\">\n              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                      <\/a>\n                <\/li>\n                            <li class=\"wrapper-legende-img\">\n                    <a class=\"single-slider-popup\" href=\"https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/soundtransit_6-scaled.jpg\" >\n                        <div class=\"single-slider-images\" style=\"background-image: url(https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/soundtransit_6-scaled.jpg); background-position: center center ;\"><\/div>\n                                            <\/a>\n                <\/li>\n                            <li class=\"wrapper-legende-img\">\n                    <a class=\"single-slider-popup\" href=\"https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/seattle-d755-2-copy.jpg\" >\n                        <div class=\"single-slider-images\" style=\"background-image: url(https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/seattle-d755-2-copy.jpg); background-position: center center ;\"><\/div>\n                                            <\/a>\n                <\/li>\n                            <li class=\"wrapper-legende-img\">\n                    <a class=\"single-slider-popup\" href=\"https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/sound-transit-span.jpg\" >\n                        <div class=\"single-slider-images\" style=\"background-image: url(https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/sound-transit-span.jpg); background-position: center center ;\"><\/div>\n                                            <\/a>\n                <\/li>\n                            <li class=\"wrapper-legende-img\">\n                    <a class=\"single-slider-popup\" href=\"https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/soundtransit2012.jpg\" >\n                        <div class=\"single-slider-images\" style=\"background-image: url(https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/soundtransit2012.jpg); background-position: center center ;\"><\/div>\n                                            <\/a>\n                <\/li>\n                            <li class=\"wrapper-legende-img\">\n                    <a class=\"single-slider-popup\" href=\"https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/soundtransit_5.jpg\" >\n                        <div class=\"single-slider-images\" style=\"background-image: url(https:\/\/www.systra.com\/ibt\/wp-content\/uploads\/sites\/21\/2023\/06\/soundtransit_5.jpg); background-position: center center ;\"><\/div>\n                                            <\/a>\n                <\/li>\n                        <\/ul>\n            <\/div>\n\n<\/div>","protected":false},"author":82,"featured_media":1702,"parent":0,"template":"","type-market":[],"project-market":[228,203],"project-service":[],"project-location":[420],"type-service":[],"type-solution":[],"class_list":["post-10295","projects","type-projects","status-publish","has-post-thumbnail","hentry","project-market-ponts-de-transit","project-market-ponts-segmentes","project-location-etats-unis"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Sound Transit Link Light Rail \u2013 Seattle, Washington - SYSTRA IBT<\/title>\n<meta name=\"description\" content=\"Sound Transit Link Light Rail \u2013 Seattle, Washington - SYSTRA International Bridge Technologies is a subsidiary of the SYSTRA Group and an integral part of the global network of SYSTRA Bridges engineering experts\" \/>\n<meta name=\"robots\" content=\"index, follow, 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