State Bridge Load Posting Processes and Practices (2014) / Chapter Skim
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SUMMARY This report is a synthesis of the practices of U.S. state governments in restricting weights of vehicles that can cross highway bridges and culverts to levels below legal loads.
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2 safe load capacities are estimated from observed conditions of structures and known traffic loads in service. For less than 1% of structures, load ratings are determined using load tests.
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3 Overweight permits are issued by states for single trips, multiple trips, or unlimited trips within a fixed period of time, often one year. States issue multi-trip permits for routes that have been evaluated for common configurations of overweight vehicles.
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