Is the Arched bridge 3D model free for commercial use?

Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.

What file format is it, and how big is it?

A single binary glTF 2.0 file (.glb), 275 KB: 3,764 triangles, 11,292 vertices and 12 materials, modelled in metres at 3.0 m × 2.2 m × 6.0 m.

Can I animate Arched bridge?

It ships as a static mesh. Its 7 named parts are separate nodes, so you can move or animate each one in your engine.

Which engines and tools can open it?

Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.

How was the Arched bridge 3D model made?

Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.

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Arched bridge

A low-poly taiko-style arched garden bridge for the Bamboo Forest kit. A dark-wood plank deck rises over a high arch between stone abutments, with red lacquered girders and railing, grey onion-bulb caps on the end posts and low mist pooled under the span.

Original GLB275 KB Poster

Left rail: colours and the 4 knobs the agent wrote into this model — they rebuild the geometry and go into your download. Right rail: looks for the viewer. Drag to orbit, scroll to zoom.

Triangles: 3,764
Vertices: 11,292
Meshes · materials: 12 · 12
Size (W × H × D): 3.0 m × 2.2 m × 6.0 m
File: GLB · 275 KB
Animation: Static
Style: Low-poly
Collection: Bamboo Forest

Palette · named materials

red accent — side girders, rails, posts (accent)#c32222
dark wood — deck planks, inner stringers (base)#3d2a1c
stone — abutments, plinths, corner rocks (earth)#9c958b
soot black — sub-deck seen through the plank gaps, cross ties (dark)#1b1b22
mist grey dark — giboshi onion-bulb post caps (trim)#878787
bamboo green — moss tufts, far end (foliage)#3a883a
bamboo green dark — moss tufts, snapping end (foliage)#235223
mist grey — ground mist banks (mist)#adadad
mist grey light — paler ground mist banks (mist)#d4d4d4

Use it

import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js";

const gltf = await new GLTFLoader().loadAsync(
  "https://assets.stoicsoft.com/1designtool/3d/models/bamboo-forest-arched-bridge/58f8ab6f10/model.glb"
);
scene.add(gltf.scene); // metres, +Y up, front faces +Z

How it was made

The brief given to 1DesignTool's “3D object” template:

Arched bridge for the Bamboo Forest kit. Design it as one clear asset at believable real-world scale for that setting (state the size in metres in meta.notes), with its main parts modelled and named, readable at thumbnail size and from every orbit angle. It is a modular piece that snaps on a 1 m grid: give it a length in whole metres and put the origin at its snapping end, stated in meta.notes. This is one part of the Bamboo Forest kit (Low-poly style, flat-lowpoly direction): Tall stalks, mist and stone paths. Use ONLY the kit palette, by name: bamboo green #3a883a, mist grey #adadad, stone #9c958b, red accent #c32222, bamboo green dark #235223, mist grey dark #878787, bamboo green light #5db15d, mist grey light #d4d4d4, soot black #1b1b22, warm white #f2ede2, mid grey #7d828c, dark wood #3d2a1c. Every material's `name` must be exactly the palette colour it uses — the GLB carries these names so the kit recolours as one; an unnamed material fails delivery. Kit knob: expose a param `mistDensity` (0–1, default 0.5) for the kit's "Mist density" setting wherever it makes sense on this part, and keep that id.

Agent: Claude Code · Claude Opus 5.5 in 1DesignTool
Direction: Low-poly · family scenes
three-check PASS · glb-lint PASS

Make your own with 1DesignTool →

Named parts · 7

Arched bridge
Stone abutments
Arch girders
Plank deck
Red railing
Giboshi post caps
Ground mist

Note: Size: 6 m long (a whole number of metres on the 1 m grid), 2.98 m wide across the abutment stones, 1.76 m across the girders (1.6 m plank deck), and 2.2 m tall to the tips of the giboshi caps. The deck is flat at 0.3 m for the first and last 0.5 m and rises 1.1 m over the 5 m arch between them, so the crown is 1.4 m above the ground. Origin: the snapping end, at the centre of the deck end at ground level (z = 0). The bridge runs to z = −6, and the model rests on y = 0. Both ends finish in an identical flat stone landing, so chained pieces and path tiles butt cleanly. The arch elevation faces ±X. The GLB has 3,764 triangles in 12 meshes, is static, and carries no animation clip. three-check's triangle figure also counts the viewer's staging ground, which is not exported. Every material is named exactly after a kit palette colour (9 of the 12 are used; warm white, mid grey and bamboo green light are not). The exporter writes one material per mesh, so a colour name can appear on more than one material: recolour by name. mistDensity (the kit's 'Mist density') sets how many low mist banks pool on the ground under the arch and how thick they are: 0 removes them, and 1 gives 7 banks up to about 0.12 m high. They are opaque low-poly shapes, so delete the .mist part if your engine supplies its own fog. length (4–8 m, whole metres), rise and deckWidth rebuild the whole bridge. Params are baked into the GLB at their defaults and only change geometry when the scene is rebuilt in the viewer; only the defaults were rendered and checked. The viewer runs at exposure 0.68 instead of the direction's 1.05, so the red and stone keep their tone; this does not affect the GLB. The green disc in the preview is viewer staging and is not in the GLB. glb-lint: 0 errors and 6 expected warnings: 12 per-mesh materials (over the direction's 10) sharing 9 colour names; non-indexed geometry (deliberate hard flat-shaded facets); overlapping sibling boxes (stringers inside girders, moss on stones); the railing and caps flagged as 'detached', although they stand on the girders and end posts; and a 2.2 m height against the direction's 1 m reference height. plan-check rejects only the hyphenated library part ids, because its regex allows no hyphen; the same plan with the slug de-hyphenated passes. three-check and the GLB reload keep all 7 ids. Fix rounds: (1) exposure lowered and mist made smaller, because the stone and mist rendered near-white; (2) the mist was reshaped into long, low, overlapping banks, because round blobs read as stepping stones.

About the Arched bridge 3D model

Arched bridge is a free low-poly 3D model from the Bamboo Forest set. It measures 3.0 m × 2.2 m × 6.0 m (W × H × D) at real-world scale and is built from 3,764 triangles across 12 meshes, with 7 named parts. Download the 275 KB GLB and drop it into three.js, React Three Fiber, Godot or Blender — free for commercial use, no attribution required.

Is the Arched bridge 3D model free for commercial use?: Yes. It is free under the 1DesignTool 3D library license: use it in personal and commercial work — games, apps, websites, renders, ads and client projects — and modify it as you like, with no credit required. What you can't do is re-sell or re-distribute the file on its own or inside a model pack.
What file format is it, and how big is it?: A single binary glTF 2.0 file (.glb), 275 KB: 3,764 triangles, 11,292 vertices and 12 materials, modelled in metres at 3.0 m × 2.2 m × 6.0 m.
Can I animate Arched bridge?: It ships as a static mesh. Its 7 named parts are separate nodes, so you can move or animate each one in your engine.
Which engines and tools can open it?: Anything that reads glTF 2.0. three.js, React Three Fiber, Babylon.js, Godot 4 and Blender import the GLB directly; Unity and Unreal Engine load it through their glTF importers. The snippets above show the exact code for three.js, React Three Fiber, Godot and Blender.
How was the Arched bridge 3D model made?: Claude Code (Claude Opus 5.5) generated it inside 1DesignTool's 3D template from a written brief, then the design kit's checks verified the geometry and the GLB before it was published. You can make your own the same way with 1DesignTool.