Articles | Volume 26, issue 11
https://doi.org/10.5194/nhess-26-5573-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-26-5573-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Persistence of scour at bridges using stochastic simulations
Department of Civil & Environmental Engineering, Universidad del Bío-Bío, Concepción, 4051381, Chile
Oscar Link
Department of Civil Engineering, Faculty of Engineering, Universidad de Concepción, and CIGIDEN R+, Edmundo Larenas 219, Concepción, 403000, Chile
Demetris Koutsoyiannis
Department of Water Resources and Environmental Engineering, School of Civil Engineering, National Technical University of Athens, Zographou, Athens, 15772, Greece
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Short summary
We explored why bridge foundations erode over time and why floods alone do not explain this risk. Using many simulated river flows linked to a model that includes erosion and sediment refilling, we found that scour is highly variable, persistent, and only weakly linked to flood extremes. Sediment coming from upstream strongly alters erosion patterns. These results show that common design methods can misjudge risk, highlighting the need to account for uncertainty in safer bridge design.
We explored why bridge foundations erode over time and why floods alone do not explain this...
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