Active control of traffic loads on bridges is a viable alternative to the posting of load limits or reducing the number of lanes. Cost estimates for strengthening or replacing bridges have shown that active load control would be a highly cost effective alternative. A simulation study has shown that overloading events are likely to be infrequent and, with active load control, the overall delay to traffic will be minimal. Measurements of vehicle loads at the bridge site will enable a more accurate load spectrum to be obtained. (A) For the covering abstract see ITRD E106406.