This tool assists in determining the permissible weight of vehicles crossing bridges on the National Bridge Inventory (NBI), ensuring compliance with legal weight limits and safeguarding infrastructure. It calculates allowable gross vehicle weights based on axle spacing and configuration, using algorithms derived from the code of federal regulations. For example, it helps determine if a specific truck configuration, such as a five-axle semi-trailer, meets weight restrictions for a given bridge.
Managing bridge loading is critical for preserving infrastructure and public safety. Overloaded vehicles can cause significant structural damage, leading to costly repairs, traffic disruptions, and potential safety hazards. By providing a standardized method for weight calculation, this computational tool promotes consistent enforcement of federal regulations across jurisdictions, contributing to a safer and more efficient transportation network. This process has evolved over time, reflecting advancements in engineering and transportation technology.