Home › Montana › Hill County › Irr - S 448 over Big Sandy Creek

Irr - S 448 over Big Sandy Creek

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

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

Irr - S 448 over Big Sandy Creek in Hill 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 5 (fair condition) on the 0-9 scale.
It was built in 1961, making it 64 years old at the 2025 inventory.
It carries about 96 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 16 of the 46 inventoried bridges in Hill County rated fair (34.8%); 3 (6.5%) 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 75 ft
Location	2M W Box Elder
NBI structure number	S00448002+01001
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 Little Box Elder Creek	2011	3,678	Good
US 2 over Drainage	2011	3,678	Good
US 2 over RR	1960	3,539	Fair
7TH Ave N over RR	1936	3,404	Fair
US 87 over Beaver Creek	1966	2,982	Good
7TH Ave N over Milk River	1973	2,952	Good