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Unbreakable Bridges
"Keep roads, beams, ropes, cables, and hydraulics from breaking."

How do I install Unbreakable Bridges?
Download the free ProjectMods desktop app, then install Unbreakable Bridges for Poly Bridge in one click.
</>What does Unbreakable Bridges do?
Unbreakable Bridges keeps your structure together when vehicles, boats, and moving hydraulics put it under heavy load. The main bridge materials resist breaking while the option is enabled. Use it to watch a design finish its route, test vehicle timing, or enjoy dramatic structures without rebuilding after every failed run. Disable the option to restore normal structural strength. The mod also restores ordinary break behavior when it is unloaded.
</>What is Unbreakable Bridges?
This Poly Bridge unbreakable bridges mod protects roads, wood, steel, hydraulics, ropes, suspension, and cables during simulation. It is useful for testing routes, oversized builds, hydraulic timing, and campaign solutions without structural failures interrupting the run.
</>Common questions about Unbreakable Bridges
When can I use
Load a campaign level or Sandbox first, then use the mod controls.
Does it change my bridge save?
The mod changes play while it is active. It does not replace or delete your bridge saves.
Does it work after changing levels?
Yes. The selected setting is applied again when the next playable level loads.
What happens when I disable it?
Normal game behavior returns when the option is disabled. Changes already saved to progression remain saved.
What options does Unbreakable Bridges include?
Enabled
Prevent the main bridge materials from breaking while enabled.
Keep roads, beams, ropes, cables, and hydraulics from breaking.
System Requirements
What features does Unbreakable Bridges include?
- Protect the main bridge materials from breaking.
- Enable or disable protection without rebuilding the bridge.
- Restore normal structural behavior when turned off.
Best For
- Test whether vehicles can complete a route despite weak supports.
- Run ambitious hydraulic and Sandbox creations without breakage.








