Modeling of maintenance strategies for highway bridges by using multi-layer genetic algorithms

•y Abstract•zRecently, due to the increasing maintenance expense for road and bridge structures, it is urgently demanded to draw up maintenance strategies more economically. In this study, proposed was to make maintenance strategies of highway bridges by using multi-layer GA. Through the numerical simulations, the following conclusions are obtained; 1) The proposed GA model can successfully achieve the escape from the local minimum;2) This model is effective for making maintenance strategies of highway bridges.