ABSTRACT
Knowledge of the expected extreme loads is an important element of bridge evaluation. In general, analytical methods without the actual data cannot provide reliable results. The paper deals with a procedure for field measurement of truck load and truck load effect in bridge components. The major truck parameters include gross vehicle weight (GVW), axle weights, and axle configuration (spacing). These parameters are measured using weigh-in-motion technique, invisible to the drivers (to avoid bias). Stress spectra are important for prediction of the remaining life for bridge girders and details. These measurements are performed over longer periods of time and they are carried out using strain transducers.
