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ABBREVIATIONS, ACRONYMS, INITIALISMS, AND SYMBOLS AASHTO American Association of State Highway and Transportation Officials ACI American Concrete Institute ADTT Average Daily Truck Traffic ASBI American Segmental Bridge Institute ASCE American Society of Civil Engineers CC Consequence Class CDF Cumulative Distribution Function CEB Euro-International Committee for Concrete (Comité Euro-International du Béton) CHBDC Canadian Highway Bridge Design Code COV Coefficient of Variation DL Dead Load DOT Department of Transportation FHWA Federal Highway Administration FIP International Federation for Prestressing (Fédération Internationale de la Précontrainte) GVW Gross Vehicle Weight HSCOBS Highway Subcommittee on Bridges and Structures ISO International Organization for Standardization LL Live Load LR Low Relaxation LRFD Load and Resistance Factor Design LS Limit State MPF Multiple Presence Factor NBS National Bureau of Standards NCHRP National Cooperative Highway Research Program OHBDC Ontario Highway Bridge Design Code PDF Probability Distribution Function PS Prestressed Segmental RFP Request for Proposal RC Reliability Class RMC Root Mean Cube SHRP Strategic Highway Research Program SLS Service Limit State(s) SPS Special Pavement Study SR Stress Relieved TRB Transportation Research Board ULS Strength or Ultimate Limit State(s) WIM Weigh-in-Motion 151