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337 Boulder/basin over Basin Creek

Lincoln County, Montana · rated Fair in the 2025 National Bridge Inventory

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

337 Boulder/basin over Basin Creek in Lincoln County, Montana, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1968 and reconstructed in 1994, making it 57 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 1994).
It is one of 92 of the 191 inventoried bridges in Lincoln County rated fair (48.2%); 29 (15.2%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Timber stringer or multi-beam girder
Length	about 23 ft
Location	6 Miles From Jct W/92
NBI structure number	011404000001008
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 2 over Flower Creek	1970	8,882	Good
California Ave over Kootenai River	1959	5,674	Fair
US 2 over Big Cherry Creek	1976	5,295	Poor
California Ave over RR	1999	4,833	Good
US 2 over Callahan Creek	1989	3,671	Fair
US 2 over Lake Creek	1989	3,377	Fair