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Flynn Ln over Broadwater Missouri 006

Broadwater County, Montana · rated Poor in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Flynn Ln over Broadwater Missouri 006 in Broadwater County, Montana, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
It was built in 1976 and reconstructed in 1991, making it 49 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2025).
Its listed owner is the county highway agency.
It is one of 4 of the 37 inventoried bridges in Broadwater County rated poor (10.8%); 4 (10.8%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Prestressed concrete channel beam
Length	about 22 ft
Location	5M N Toston
NBI structure number	L04404003+04001
Condition class	Poor

Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.

Bridge	Built	Vehicles/day	Condition
US287 over Beaver Creek	1992	6,930	Fair
US 12 over Missouri River	1935	6,843	Fair
US 287 over Mud Spring Gulch	2013	6,444	Good
US 287 over Int Three Forks I 90	2012	6,444	Fair
US 287 over Deep Creek	2012	5,485	Fair
US 287 over Six Mile Creek	2020	5,250	Good