Correlation of Bridge Deck Deterioration with Truckload Spectra Based on NBI Condition Rating and Weigh-In-Motion Data
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2024-05-01
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Abstract:This summary report presents results from a study that established a relationship between truckload spectra and bridge service life at the national, regional, and State levels. Weigh-in-motion data and bridge inspection data were obtained nationwide from the Long-Term Pavement Performance (LTPP) and Long-Term Bridge Performance Programs (LTBP), respectively. The study used weigh-in-motion data to obtain various truck-loading statistics for all trucks fleet weights, overweight trucks fleet weights, single-axle weights, tandem weights, and tridem-axle weights.
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