{"id":95524,"date":"2018-05-28T10:37:14","date_gmt":"2018-05-28T14:37:14","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/RADF\/section-104\/"},"modified":"2026-03-04T13:19:34","modified_gmt":"2026-03-04T18:19:34","slug":"section-104","status":"publish","type":"cpt_radf","link":"https:\/\/mrnf.gouv.qc.ca\/en\/RADF\/guide\/chapter-v\/section-104\/","title":{"rendered":"Section 104"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; module_class=&#8221;bg-radf&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row module_class=&#8221;wrapper-radf&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p class=\"titre-section\">Chapter V \u2013 Roads, sandpits and forest infrastructures<br \/>\nDivision III &#8211; Bridge, culverts, removable structures and rudimentary structures<br \/>\n\u00a74. General provisions applicable to bridges or culverts<\/p>\n<h1>Section 104<\/h1>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/drapeau-texte.png\" alt=\"\" \/><\/p>\n<div class=\"disposition\">\n<h2>1<\/h2>\n<h4>Additional information<\/h4>\n<p>The decision tree below can be used to decide on the type of structure that must be installed to cross a watercourse.<\/p>\n<p><a href=\"\/wp-content\/uploads\/Structure_Installed_Crosse-a-Waterco_20mars2018.jpg\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" title=\"Type of Structure to be Installed to Cross a Watercourse \u2013 Decision Tree\" src=\"\/wp-content\/uploads\/Structure_Installed_Crosse-a-Waterco_20mars2018.jpg\" alt=\"Type of Structure to be Installed to Cross a Watercourse \u2013 Decision Tree\" width=\"380\" height=\"295\" \/><\/a><\/p>\n<\/div>\n<p>On crossing sites where the free flow of fish needs not be ensured by reason of the presence of any of the situations described in <a href=\"https:\/\/mrnf.gouv.qc.ca\/en\/RADF\/guide\/chapter-v\/section-103\/\">section 103<\/a>, the installation of the culvert must meet the following conditions:<\/p>\n<ol class=\"alpha\">\n<li>the diameter or span of the conduit or arch must be at least 450 mm; <img decoding=\"async\" src=\"\/wp-content\/uploads\/drapeau-texte.png\" alt=\"\" \/>\n<div class=\"disposition\">\n<h2>2<\/h2>\n<h4>Objectives<\/h4>\n<ul>\n<li>To ensure the free flow of water<\/li>\n<li>To ensure the lifespan of a road, bridge or culvert<\/li>\n<\/ul>\n<h4><\/h4>\n<h4>Additional information<\/h4>\n<p><strong>How is the width of a watercourse measured?<\/strong><\/p>\n<p>The width of a watercourse is calculated using the average of at least four representative measurements of the natural watercourse taken upstream and downstream of the crossing site. If there are signs of narrowing or widening, the section in question (e.g. area disturbed by a beaver dam) must be excluded. The width is measured at the level of the upper limit of the banks. The method used to identify the upper limit is shown in the definition of \u201cbank\u201d.<\/p>\n<\/div>\n<\/li>\n<li>the conduit must be installed following the natural slope of the watercourse and be buried under the bed of the watercourse at a depth equivalent to 10% the height of the conduit, without exceeding 500 mm regardless of the size of the conduit; <img decoding=\"async\" src=\"\/wp-content\/uploads\/drapeau-texte.png\" alt=\"\" \/>\n<div class=\"disposition\">\n<h2>3<\/h2>\n<h4>Objectives<\/h4>\n<ul>\n<li>To avoid formation of a vertical fall at the culvert outlet<\/li>\n<li>To ensure the free flow of water<\/li>\n<li>To ensure the lifespan of a road, bridge or culvert<\/li>\n<\/ul>\n<h4><\/h4>\n<h4>Additional information<\/h4>\n<p>If, at the time of construction, it is not possible to bury the conduit 10% of its height due to the presence of bedrock that was not visible prior to the work, it must be installed so as to bury it as much as possible. In these situations, no waterfall shall be created in or out of the conduit.<\/p>\n<p><a href=\"\/wp-content\/uploads\/Art104A_anglais-web.jpg\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" title=\"Burial of a culvert conduit in the bed of a watercourse where it is not necessary to ensure the free flow of fish\" src=\"\/wp-content\/uploads\/Art104A_anglais-web.jpg\" alt=\"Burial of a culvert conduit in the bed of a watercourse where it is not necessary to ensure the free flow of fish\" width=\"380\" height=\"285\" \/><\/a><\/p>\n<p><span style=\"font-weight: bold;\">Fi<\/span><span style=\"font-weight: bold;\">gure 104A<\/span> Burial of a culvert conduit in the bed of a watercourse where it is not necessary to ensure the free flow of fish<\/p>\n<\/div>\n<\/li>\n<li>the culvert may not reduce the width of the watercourse by more than 50%, measured from the upper limit of the banks. <img decoding=\"async\" src=\"\/wp-content\/uploads\/drapeau-texte.png\" alt=\"\" \/>\n<div class=\"disposition\">\n<h2>4<\/h2>\n<h4>Objectives<\/h4>\n<ul>\n<li>To ensure the free flow of water<\/li>\n<li>To ensure the lifespan of a road, bridge or culvert<\/li>\n<li>To avoid scouring of the watercourse<\/li>\n<\/ul>\n<h4><\/h4>\n<h4>Additional information<\/h4>\n<p><strong>How is the width of a watercourse measured?<\/strong><\/p>\n<p>The width of a watercourse is calculated using the average of at least four representative measurements of the natural watercourse taken upstream and downstream of the crossing site. If there are signs of narrowing or widening, the section in question (e.g. area disturbed by a beaver dam) must be excluded. The width is measured at the level of the upper limit of the banks. The method used to identify the upper limit is shown in the definition of \u201cbank\u201d.<\/p>\n<p><a href=\"\/wp-content\/uploads\/Art104B_anglais-web.jpg\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone\" style=\"cursor: move;\" title=\"Maximum reduction of the width of a watercourse where it is not necessary to ensure the free flow of fish\" src=\"\/wp-content\/uploads\/Art104B_anglais-web.jpg\" alt=\"Maximum reduction of the width of a watercourse where it is not necessary to ensure the free flow of fish\" width=\"380\" height=\"285\" \/><\/a><\/p>\n<p><span style=\"font-weight: bold;\">Fi<\/span><span style=\"font-weight: bold;\">gure 104B<\/span> Maximum reduction of the width of a watercourse where it is not necessary to ensure the free flow of fish<\/p>\n<\/div>\n<\/li>\n<\/ol>\n<p>On a crossing site where the free flow of fish need not be ensured, a culvert may include 1 smooth wall conduit or 2 in the case of parallel conduits. <img decoding=\"async\" src=\"\/wp-content\/uploads\/drapeau-texte.png\" alt=\"\" \/><\/p>\n<div class=\"disposition\">\n<h2>5<\/h2>\n<h4>Objective<\/h4>\n<ul>\n<li>To ensure the free flow of water<\/li>\n<\/ul>\n<\/div>\n<p>&nbsp;[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"featured_media":0,"parent":95265,"menu_order":0,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_oasis_is_in_workflow":0,"_oasis_original":0,"_oasis_task_priority":""},"class_list":["post-95524","cpt_radf","type-cpt_radf","status-publish","format-standard","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Section 104 - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/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:\/\/mrnf.gouv.qc.ca\/en\/RADF\/guide\/chapter-v\/section-104\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Section 104 - Minist\u00e8re des Ressources naturelles et des For\u00eats\" \/>\n<meta property=\"og:description\" content=\"[et_pb_section fb_built=&#8221;1&#8243; module_class=&#8221;bg-radf&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row module_class=&#8221;wrapper-radf&#8221; _builder_version=&#8221;4.16&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; global_colors_info=&#8221;{}&#8221;] Chapter V \u2013 Roads, sandpits and forest infrastructures Division III &#8211; Bridge, culverts, removable structures and rudimentary structures \u00a74. 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