State DOT Certification Programs for Materials Sampling and Testing Personnel

By: National Academies of Sciences, Engineering, and Medicine and Transportation Research Board and National Cooperative Highway Research Program and Desna Bergold and Georgene M. Geary

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Synopsis: State departments of transportation (DOTs) are responsible for the construction and maintenance of the nation‘s roadway infrastructure, which requires quality materials and workmanship verified through inspection and testing. NCHRP Synthesis 638: State DOT Certification Programs for Materials Sampling and Testing Personnel, from TRB’s National Cooperative Highway Research Program, documents practices used by DOTs for implementing qualification and certification programs for the personnel who conduct materials sampling and testing in accordance with federal requirements.