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County Road 031 over Smith Creek 007

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

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

County Road 031 over Smith Creek 007 in Wibaux 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 6 (satisfactory condition) on the 0-9 scale.
It was built in 2012, making it 13 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 21 of the 25 inventoried bridges in Wibaux County rated fair (84.0%); 1 (4.0%) 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	Prestressed concrete tee beam
Length	about 120 ft
Location	29M N Wibaux
NBI structure number	L55031000+07001
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 94 over Yates Creek	1962	3,592	Fair
I 94 over Yates Creek	2000	3,592	Fair
I 94 over Beaver Creek	1974	1,796	Fair
I 94 over Int Carlyle Rd	1974	1,796	Fair
I 94 over Int Carlyle Rd	1974	1,796	Fair
S 7 over Beaver Creek	1949	1,671	Fair