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Whitney CR Rd over O`fallon Creek

Custer County, Montana · rated Good in the 2025 National Bridge Inventory

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

Whitney CR Rd over O`fallon Creek in Custer County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1990, making it 35 years old at the 2025 inventory.
It carries about 31 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 11 of the 71 inventoried bridges in Custer County rated good (15.5%); 6 (8.5%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 189 ft
Location	Ismay-whitney CR Rd
NBI structure number	S00320005+03001
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 94 over Lignite Creek	1964	4,724	Fair
I 94 over Coal Creek	1963	4,724	Fair
I 94 over Tongue River	1961	4,707	Fair
I 94 over Vehicle Pass	1986	4,697	Good
I 94 over Jones Creek-stockpass	1962	4,393	Fair
S 59 over Yellowstone River	1957	2,949	Fair