{"data":{"id":"13693","slug":"modern-rail-and-metro-network-viaduct-span-4283aa64","title":"Single track viaduct span (Modern Rail and Metro Network)","summary":"A 12 m concrete box girder viaduct span on a tapered pier, carrying ballasted track between parapets.","description":"A 12 m single track viaduct span: a prestressed concrete box girder with cantilever deck edges on a tapered pier and spread footing, carrying ballasted track between 1.15 m parapets with a cable trough and walkway each side. The pier base sits at y=0 and the railhead at y=7.80, so spans chain to each other rather than to ground level track. The module origin sits on the rail-a port at the deck centreline. Bounding size 5.00 x 8.38 x 12.00 m (X x Y x Z). Metre units, +Y up, +Z forward, resting at y=0. Static geometry; no rig, collision or navigation data.","status":"published","url":"https://3dassets.dev/assets/modern-rail-and-metro-network-viaduct-span-4283aa64","cdnUrl":"https://cdn.3dassets.dev/assets/13693/v1/model.glb","downloadUrl":"https://3dassets.dev/download/modern-rail-and-metro-network-viaduct-span-4283aa64","thumbnailUrl":"https://cdn.3dassets.dev/assets/13693/v1/thumb.webp","posterUrl":"https://cdn.3dassets.dev/assets/13693/v1/poster.webp","blurhash":"UBD,4Y-;00V@~qRjxu%24n4.xu%MIUD%9Fog","category":{"slug":"roads-infrastructure","title":"Roads & Infrastructure"},"tags":[{"slug":"modern","title":"Modern"},{"slug":"realistic","title":"Realistic"},{"slug":"modular","title":"Modular"},{"slug":"kit","title":"Kit / Set"}],"license":{"slug":"cc0-1.0","name":"CC0 1.0 Universal","url":"https://creativecommons.org/publicdomain/zero/1.0/","attributionRequired":false},"contributor":{"username":"3dassets","name":"3D Assets","url":"https://3dassets.dev/u/3dassets"},"stats":{"fileSize":195004,"triangles":3984,"vertices":11952,"meshes":5,"materials":5,"textures":0,"animations":[],"boundingBox":{"min":[-2.499782613762546,0.000332090646690375,-0.0012000000569969416],"max":[2.499782613762546,8.375963039660974,12.001199722290039]},"sizeMeters":[5,8.376,12.002],"hasDraco":false,"hasMeshopt":false,"hasKTX2":false,"extensionsUsed":["KHR_mesh_quantization"]},"aiGenerated":true,"aiModel":"Claude Fable 5.1","downloads":0,"publishedAt":"2026-09-07T15:40:39.934Z","updatedAt":"2026-09-07T15:40:40.026Z","usage":{"threejs":"import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'\n\nconst loader = new GLTFLoader()\nloader.load('https://cdn.3dassets.dev/assets/13693/v1/model.glb', (gltf) => {\n  scene.add(gltf.scene)\n})","r3f":"import { useGLTF } from '@react-three/drei'\n\nexport function SingleTrackViaductSpanModernRailAndMetroNetwork(props) {\n  const { scene } = useGLTF('https://cdn.3dassets.dev/assets/13693/v1/model.glb')\n  return <primitive object={scene} {...props} />\n}\nuseGLTF.preload('https://cdn.3dassets.dev/assets/13693/v1/model.glb')","modelViewer":"<model-viewer src=\"https://cdn.3dassets.dev/assets/13693/v1/model.glb\" alt=\"Single track viaduct span (Modern Rail and Metro Network)\" camera-controls auto-rotate></model-viewer>","blender":"# Blender 4.x: File > Import > glTF 2.0, or from the Python console after downloading the file.\nimport bpy\nbpy.ops.import_scene.gltf(filepath='model.glb')  # from https://cdn.3dassets.dev/assets/13693/v1/model.glb\n# Metres and +Y up are converted to Blender's Z-up scene automatically.","godot":"# Godot 4: copy model.glb into res://models/ and the editor imports it as a scene.\nvar packed := load(\"res://models/model.glb\") as PackedScene\nvar model := packed.instantiate()\nadd_child(model)","unity":"// Unity: import model.glb with glTFast (Package Manager: com.unity.cloud.gltfast) and drag the prefab in,\n// or load it at runtime straight from the CDN:\nusing GLTFast;\nvar gltf = new GltfImport();\nif (await gltf.Load(\"https://cdn.3dassets.dev/assets/13693/v1/model.glb\")) await gltf.InstantiateMainSceneAsync(transform);"}}}