Here is an autocad dwg file for 3d view of a bridge. a structure carrying a road, path, railway, etc. across a river, road, or other obstacle.
Angle section steel CAD bl
Construction detail dwg fi
Floor and wall finishes fo
Construction detail in aut
Girder beam and column det
Roof section detail dwg fi
Flat roof
Roof plan elevation detail
Roof plan detail dwg file
Column and beam joint deta
Structure details plan dwg
Steel structure