... maintenance,suitable for continuous beam high fiexural 1. Finished steel bridge ( our project overview)2. We can design as your plan ... serivce .6.Don't hesitate, contact us. The box girder section bridge has many advantages:light weight,steel saving,rapid installation,easy ... /M2) if have 4)Earthquake load if have 5)Crane (if have), Crane span, crane lift height, max lift capacity, max wheel pressure