This model was created entirely in Unity and is available in FBX and GLTF/GLB format for download. It is based on the 1930s Bailey Bridge used extensively during and after World war 2. The model can be customised and re-textured easily. Each component is available as an individual asset for custom use. Materials are embedded but can easily be extracted and customised too.
FBX (Autodesk FBX, filesize: 55.8 MB), GLTF (glTF, filesize: 51.1 MB)