A special thank you to AmbientCG for providing high-quality, free textures. Their resources have greatly contributed to enhancing the realism of the Truss Bridge Generator.

And special thank you to zeroskilz for providing even thickness node group. 

Youtube Link:  https://www.youtube.com/watch?v=lv63IGpubX0

Truss Bridge Generator – How to start/install

Option 1: Use the Provided Blend File

You can start working directly in the TrussBridgeGenerator.blend file, which already contains the Geometry Nodes setup.

Option 2: Append the Modifier to Your Own Project

If you want to use the generator in another Blender project, follow these steps:

1. Open your Blender project.
2. Click File > Append.
3. Navigate to the TrussBridgeGenerator.blend file.
4. Click on the Blend file to open it.
5. Select Node Tree and choose Truss Bridge Generator.
6. After appending, press M and move it into a new collection for better organization.

Fixing Missing Textures

If textures appear missing, follow these steps:

1. Ensure the textures folder is located near the blend file.
2. In Blender, go to File > External Data > Find Missing Files.
3. Select the folder containing the textures.
4. Click Find Missing Files, and Blender will relink them automatically.

Truss Bridge Generator – How to Use

Roadway Panel:

• Left Side Driving Switch: Changes the traffic direction.
• Road Width: One lane road width should be 3.5m. For a 2-lane road, set the road width to 7m.
• Number of Lanes: Should match the road width value. (e.g., 7m width = 2 lanes).
• Footpath: Adjusts the footpath width.

• Width: Adjusts the truss section width.
• Depth: Adjusts the truss section depth.
• Truss Height: Controls the bridge height.
• No. of Sub-Bridges: Splits the bridge into smaller sections.
• No. of Bays: Increases or decreases the members. Adjust this so the inclined members stay between 45-60 degrees.
• Top Bracing Switch: Turns the bridge into a Pony Truss Bridge.

• Light ON: Switch to turn on the bridge floodlight.
• Power: Adjusts the light's power. (Must be manually changed in Truss Asset Collection > Area_Light > Property, since the driver for power doesn’t work in appended files.)
• Railing: Switch to change railing types.

• Pier Index: Switch to change pier types.
• Pier Base Index: Switch to change pier base types.
• Abutment Height: Adjusts the height of the abutment.
• Pier Offset Height: Adjusts the height of the pier.