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I 94 over Rr-highline Canal Rd

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

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

I 94 over Rr-highline Canal Rd in Yellowstone 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 1968, making it 57 years old at the 2025 inventory.
It carries about 2,611 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 186 of the 290 inventoried bridges in Yellowstone County rated fair (64.1%); 7 (2.4%) 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	Continuous steel stringer or multi-beam girder
Length	about 479 ft
Location	1.9M E Ballantine
NBI structure number	I00094016+05181
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I90 over MT Power RR Spur	2023	29,488	Good
I 90 over City County Drain Ditch	1966	27,985	Fair
King Ave W over Bbwa Canal	1994	26,602	Fair
Mullowney Ln over RR	2007	23,980	Good
Mullowney Ln over RR	2007	23,980	Fair
US 87 over Int Lockwood I 90	1966	23,199	Fair