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Old Hwy 10 over Irrigation Ditch 024

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

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

Old Hwy 10 over Irrigation Ditch 024 in Treasure County, Montana, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1933, making it 92 years old at the 2025 inventory.
It carries about 273 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 14 of the 26 inventoried bridges in Treasure County rated fair (53.8%); 4 (15.4%) 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 58 ft
Location	10M E Hysham
NBI structure number	L52086009+09001
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 Sep RR	1973	5,042	Good
I 94 over Int Hysham	1964	2,521	Good
I 94 over Int Hysham	1976	2,521	Good
I 94 over Sarpy Creek	1967	2,521	Good
I 94 over Sarpy Creek	1976	2,094	Good
Frontage Road 018 over Irrigation Ditch 001	1933	281	Poor