United States Department of Transportation
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Non-Contact Scour Monitoring for Highway Bridges
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2020-11-01
[PDF-1.96 MB]
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Edition:Final Report. Jun 2019- Nov 2020
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Abstract:The most common cause of bridge failures in the United States is from floods scouring bed material around bridge foundations. Bridge scour due to hydraulic forces accounts for 52% of bridge failures. Increasing occurrences of flood events and an increase in their magnitude will likely result in greater instances of scour damage to bridges. A significant number of existing bridges across the nation are not adequately designed or maintained in relation to scour vulnerability under extreme flood events and are at risk of premature end of service life. This research demonstrated a potential non-contact green laser-based scour monitoring technique that is safer and quickly deployable. The research explored the feasibility of the approach in laboratory and field conditions where water turbidity conditions allow. The methodologies and mathematical model to implement non-contact scour monitoring are presented in the report along with the results from experiments.
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