Construction of new Prüm bridge in Minden, Germany
Secugrid®-reinforced temporary bridge abutment secures traffic flow during the construction
On the outskirts of Minden in Rhineland-Palatinate, an ageing reinforced concrete bridge crosses the River Prüm. As it was no longer designed for today’s traffic loads and load-bearing capacity problems had already been identified, the Gerolstein state mobility authority decided to build a new bridge. A full closure was not an option during the construction of the new bridge due to the high volume of traffic, so traffic was to be routed over a temporary bridge. As a quick and cost-effective solution, the Flesch engineering consultants planned to construct the temporary bridge abutments and the associated ramps as a reinforced earth structure. A modular bridge element from Retrobridge completed the project.
[fusion_gallery order_by=”desc” limit=”” pagination_type=”” load_more_btn_text=”” layout=”” picture_size=”” aspect_ratio=”” custom_aspect_ratio=”100″ aspect_ratio_position=”” gallery_masonry_grid_ratio=”” gallery_masonry_width_double=”” lightbox=”yes” lightbox_content=”” margin_top=”” margin_right=”” margin_bottom=”” margin_left=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” columns_medium=”0″ columns_small=”0″ columns=”2″ column_spacing=”” hover_type=”” bordersize=”” bordercolor=”” hue=”” saturation=”” lightness=”” alpha=”” border_radius=”” load_more_btn_span=”no” button_alignment=”center” load_more_btn_hover_color=”” load_more_btn_color=”” load_more_btn_hover_bg_color=”” load_more_btn_bg_color=”” caption_style=”off” caption_title_tag=”2″ fusion_font_family_caption_title_font=”” fusion_font_variant_caption_title_font=”” caption_title_size=”” caption_title_line_height=”” caption_title_letter_spacing=”” caption_title_transform=”” caption_title_color=”” caption_background_color=”” fusion_font_family_caption_text_font=”” fusion_font_variant_caption_text_font=”” caption_text_size=”” caption_text_line_height=”” caption_text_letter_spacing=”” caption_text_transform=”” caption_text_color=”” caption_border_color=”” caption_overlay_color=”” caption_align_medium=”none” caption_align_small=”none” caption_align=”none” caption_margin_top=”” caption_margin_right=”” caption_margin_bottom=”” caption_margin_left=”” parent_dynamic_content=””][fusion_gallery_image image=”https://www.naue.com/wp-content/uploads/2024/03/KBE-Prumbrucke_4-1280x720px.jpg” image_id=”29349″ aspect_ratio_position=”” masonry_image_position=”” image_title=”” image_caption=”” link=”” linktarget=”_self” /][fusion_gallery_image image=”https://www.naue.com/wp-content/uploads/2024/03/KBE-Prumbrucke_2-1280x720px.jpg” image_id=”29333″ aspect_ratio_position=”” masonry_image_position=”” image_title=”” image_caption=”” link=”” linktarget=”_self” /][/fusion_gallery]
When planning the temporary bridge, it was important that the 40 m wide drainage cross-section of the Prüm stream discharge would not be constricted so that the water could run off unhindered even during flood events. The approx. 85° steep and up to 6.4m high Secugrid® geogrid-reinforced bridge abutments fulfilled this requirement and saved a considerable amount of fill soil compared to naturally filled embankments, which also had a positive effect on construction progress. Secugrid® geogrid-reinforced bridge abutments are 100% recyclable, reduce construction time through rapid construction, reduce construction costs and save up to 85% greenhouse gas emissions compared to conventional reinforced concrete structures. The geosynthetic solution even withstood a flood event that occurred during the construction period of the new bridge.
