Abstract
Abstract In this study, an effort was made to evaluate pavement condition using the pavement structural condition index (SCI), which isbased on falling weigh deflectometer (FWD) deflection basin and structural numbers that incorporated various levels of traffic andsubgrade resilient modulus. Extensive field validations were conducted to assess the effectiveness of SCI along with comparisonof pavement distress and condition score restored in the Pavement Management Information System (PMIS). The analysis resultsrevealed that the SCI appears to realistically capture the existing pavement condition compared to the pavement scores and fieldsurvey results. Based on this finding, probabilistic and deterministic models were developed to estimate SCI when FWD data isnot available. These models are deemed most useful for network-level analysis purposes to aid establish pavement maintenanceand rehabilitation plans.Key words: Falling weigh deflectometer deflection basin, Pavement structural condition index, Pavement management informationsystem, Probabilistic and deterministic models, Subgrade resilient modulus
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