bridge sign 3D model is available on CGTrader for $2. Original author: cagdasc. Specs: 61320 polys, 80042 verts.
SKP (Sketchup, filesize: 1.15 MB), BLEND (Blender, filesize: 5.61 MB), OBJ (OBJ, filesize: 4.14 MB), FBX (Autodesk FBX, filesize: 1.23 MB), GLTF (glTF, filesize: 2.03 MB), STL (Stereolithography, filesize: 2.92 MB), DAE (Collada, filesize: 4.58 MB), ABC (Alembic, filesize: 1.9 MB)