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S 7 over Ash Creek

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

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

S 7 over Ash Creek 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 superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1942, making it 83 years old at the 2025 inventory.
It carries about 581 vehicles a day (traffic count year 2023).
Its listed owner is the state 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	Timber stringer or multi-beam girder
Length	about 76 ft
Location	25M S Wibaux
NBI structure number	P00027054+09931
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