Bridge owners are placing an increased emphasis on the evaluation of the effects of construction loads upon bridge structures undergoing rehabilitation. Construction loads, whether from materials stockpiles or equipment loads, can be of substantial magnitude and can produce load effects that differ from those for which a bridge was designed. Evaluating the bridge for these effects is best performed by engineers engaged by the contractor.Structure evaluation can be performed in a simplified or sophisticated manner. It is suggested that treating construction loads as Operating loadsand basing the load assessment on the AASHTO Manual for Condition Evaluation of Bridges is an appropriate approach. The final configuration and magnitude of construction loads must be clearly delineated, and field controls must be in effect to assure they are not exceeded.
Abstract