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Unbreakable Bridges
"Keep your entire bridge from breaking during simulation."

How do I install Unbreakable Bridges?
Download the free ProjectMods desktop app, then install Unbreakable Bridges for Poly Bridge 3 in one click.
</>What does Unbreakable Bridges do?
Unbreakable Bridges keeps your structure together under heavy vehicles, moving hydraulics, and extreme impacts. Bridge edges remain intact while Enabled is on. Use it to test routes, vehicle timing, and elaborate Sandbox contraptions without structural failures ending the run early. Disable the option to restore the previous breakability setting. If Sandbox was already set to Unbreakable, that choice is preserved.
</>What is Unbreakable Bridges?
This Poly Bridge 3 unbreakable bridges mod prevents structural edges from breaking during simulation. It is useful for campaign route testing, hydraulic timing, giant Sandbox creations, and designs that need to survive extreme loads.
</>Common questions about Unbreakable Bridges
Does it protect the whole bridge?
Yes. Bridge edges are made unbreakable while the option is enabled.
Can I enable it during a simulation?
Yes. The current simulation is switched to unbreakable immediately.
What happens when I disable it?
Normal breakage returns unless the Sandbox level was already set to Unbreakable.
Does it stop vehicles from failing for other reasons?
No. It prevents bridge breakage, but vehicles can still miss flags, fall, or become stuck.
What options does Unbreakable Bridges include?
Enabled
Prevent bridge edges from breaking during simulation while enabled.
Keep your entire bridge from breaking during simulation.
System Requirements
What features does Unbreakable Bridges include?
- Stop bridge edges from breaking during simulation.
- Protect newly loaded levels while Enabled remains on.
- Restore the previous Sandbox breakability choice when disabled.
Best For
- Check whether vehicles can finish a route on a weak bridge.
- Run ambitious hydraulic and Sandbox designs without breakage.
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