truss bridge 3d model

Create a simple base and on top a rectangle with rounded corners. Inside the rectangle, include a basic bridge structure silhouette made of straight beams and triangles. The bridge should have two vertical supports, diagonal truss lines, and a flat deck line. Use clean, minimal geometry, like a logo or icon. No text, no logos, no background, no cables, no complex details. Solid, printable geometry with clear cutouts.