I 90 over RR

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

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

I 90 over RR in Stillwater 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 5 (fair condition) on the 0-9 scale.
It was built in 1962, making it 63 years old at the 2025 inventory.
It carries about 5,423 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 63 of the 92 inventoried bridges in Stillwater County rated fair (68.5%); 1 (1.1%) 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	Continuous steel stringer or multi-beam girder
Length	about 249 ft
Location	6.2M E Reed Point
NBI structure number	I00090398+04601
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 90 over Cove Irrigation Ditch	1970	12,321	Good
I 90 over Int Exit 396	1963	10,845	Fair
I 90 over Int Park City	1967	7,580	Fair
I 90 over Int Park City	1967	7,580	Fair
I 90 over Sep Pope Road	1967	7,580	Fair
I 90 over Sep Pope Road	1967	7,580	Fair