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.
Overflow box plant plan an
Building ground floor plan
Roof and site plan layout
Mounting detail for entran
Perimeter fence of public
Stair plan and section det
Details of Acoustic Insula
Foundation section and pla
Beam and Roof elevation de
Building plan in elevation
Roof plan Centre line deta
Drinkable water tank const