en Optimal design Optimal design پژوهشي Research <span style="font-size:11.5pt"><span style="text-justify:inter-ideograph"><span style="text-autospace:none"><span new="" roman="" style="font-family:" times="">Design optimization of cable-stayed bridges is a challenging optimization problem because a large number of variables is usually involved in the optimization process. For these structures the design variables are cross-sectional areas of the cables. In this study, an efficient metaheuristic algorithm namely, momentum search algorithm (MSA) is used to optimize the design of cable-stayed bridges. The MSA is inspired by the Physics and its superiority over many metaheuristics has been demonstrated in tackling several standard benchmark test functions. In the current work, the performance of MSA is compared with that of two other metaheuristics and it is shown that the MSA is an efficient algorithm to tackle the optimization problem of cable-stayed bridges.</span></span></span></span><br> &nbsp; cable-stayed bridge, structural optimization, metaheuristic algorithm, particle swarm optimization. 1 16 http://ijoce.iust.ac.ir/browse.php?a_code=A-10-66-359&slc_lang=en&sid=1 V. Nzarpour 180031947532846002558 180031947532846002558 No Department of Civil Engineering, Urmia University, Urmia, Iran S. Gholizadeh s.gholizadeh@urmia.ac.ir 180031947532846002559 180031947532846002559 Yes Department of Civil Engineering, Urmia University, Urmia, Iran