About
A single track tunnel portal 6 m deep: a concrete headwall with a horseshoe bore 6.6 m wide and 6.4 m to the crown, a cornice above it, splayed wing walls each side, a lined bore running back from the face with a cable route and a refuge niche in each side wall, and a slab track floor so the module chains to plain track. Ballast base at y=0, concrete sleeper tops at y=0.41 and railhead top at y=0.60; 1,435 mm gauge with rail centres at x = +/- 0.7525. The module origin sits on the rail-a port at the track centreline and the module runs toward +Z on the 6 m grid. Bounding size 10.72 x 8.08 x 9.30 m (X x Y x Z). Metre units, +Y up, +Z forward, resting at y=0. Static geometry; no rig, collision or navigation data.
Use with an AI agent
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Use the “Tunnel portal with slab track (Modern Rail and Metro Network)” asset in my project. Model: https://cdn.3dassets.dev/assets/13692/v1/model.glb Asset page: https://3dassets.dev/assets/modern-rail-and-metro-network-tunnel-portal-f7d066da Description: A 6 m concrete tunnel portal with a horseshoe bore, cornice, splayed wing walls and slab track through it. - Dimensions (X × Y × Z): 10.72 × 8.08 × 9.3 metres - Triangles: 1.8k - Animations: none - Licence: CC0 1.0 Universal (https://creativecommons.org/publicdomain/zero/1.0/) - Loading: Three.js GLTFLoader; no additional decoders required.
Also available as JSON, Markdown, or via the MCP server.
Import manually
Choose your framework, then copy the code into your project to load the asset.
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js'
const loader = new GLTFLoader()
loader.load('https://cdn.3dassets.dev/assets/13692/v1/model.glb', (gltf) => {
scene.add(gltf.scene)
})Tunnel portal with slab track (Modern Rail and Metro Network)
A 6 m concrete tunnel portal with a horseshoe bore, cornice, splayed wing walls and slab track through it.
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