<p>The William R. Bennett Bridge is a new floating bridge across Okanagan Lake in British Columbia, Canada that will replace an existing aging structure. There are several characteristics that make this project unique. The new bridge has floating and fixed sections with complex structural interaction. The floating section has an elevated deck, which was cast while floating and while the pontoon- string assembly was ongoing, thus requiring constant monitoring and ballasting modifications.</p><p>These challenges have been overcome with innovative thinking and close coordination between the design and construction teams that comprise the W. R. Bennett Bridge Group.</p>
<p>The 2,750m-long Chacao Bridge, South America’s longest suspension bridge, will connect mainland Chile with the country’s largest island Chiloe. The three-tower suspension bridge will have main spans over 1km in length (one 1055 m and the other 1155 m). The central pylon with inverted V shape shown in the reference design has been modified by SYSTRA. The bridge being located close to an active seismic fault, particular care was considered on seismic robustness, and many specific seismic analysis were performed. The total length of the suspended steel superstructure is 2494 m and the weight about 21,000 tons. The bridge girder is continuous from the South pylon to the North abutment.</p>
<p>The distance between Norway’s second and fourth largest cities, Bergen and Stavanger, is only 150 km. The E39 link between the cities involves as per today several ferry connections, therefore the planning of a fixed connection with bridges and subsea tunnels has been going on for some years. A major technical challenge is the crossing of Bjørnafjord, since the fjord at this site is about 5000m wide and 500m deep.</p><p>This paper describes the development of technical solutions to cross the Bjørnafjord, and the evaluation and challenges met in the different stages of the project until a preferred solution was reached in 2019. Advanced analyses and evaluations have been performed to cope with challenges like wave/wind/current interactions, ship collision, parametric excitation and subsea landslides. The work performed will provide a major contribution to future largescale strait crossings in the world.</p>
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