What caused the bridge collapse in Libby, Montana?

The bridge in Libby, Montana, was destroyed by the powerful surge of Libby Creek during an atmospheric river event.

How many bridges were damaged in Lincoln County?

At least five bridges in Lincoln County were reported as damaged or destroyed due to widespread flooding.

Why was a boil water advisory issued for Libby?

A boil water advisory was issued for Libby due to high turbidity in the public water supply caused by widespread flooding.

Home / Disasters and Accidents / Montana Bridge Washed Away by Raging Creek

Montana Bridge Washed Away by Raging Creek

15 Dec, 2025

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Summary

A creek destroyed a bridge and road in Libby, Montana on December 11.
At least five bridges in Lincoln County were damaged or destroyed.
A boil water advisory was issued for Libby due to potential contamination.

Montana Bridge Washed Away by Raging Creek

A devastating flash flood event on December 11 saw Libby Creek aggressively erode and destroy a crucial bridge on Farm to Market Road in Libby, Montana. The immense power of the water claimed the bridge and the surrounding roadway, leaving onlookers shocked. This destructive event was a consequence of a major atmospheric river impacting the Northwest region.

The flooding overwhelmed infrastructure across Lincoln County, leading to the damage or complete destruction of at least five bridges. Emergency response teams are actively assessing the infrastructure's condition and coordinating recovery efforts. Evacuations were also necessitated in various communities due to the rising waters.

In addition to the infrastructure damage, the Libby public water supply experienced high turbidity. This led the Lincoln County Health Department to issue a boil water advisory for Libby, cautioning residents about potential bacterial contamination. Governor Greg Gianforte declared a flood emergency for Libby in response to the widespread inundation.