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Yellowstone Trail over Whitetail Creek 024

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

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

Yellowstone Trail over Whitetail Creek 024 in Jefferson 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 1986, making it 39 years old at the 2025 inventory.
It carries about 100 vehicles a day (traffic count year 2025).
Its listed owner is the county highway agency.
It is one of 103 of the 136 inventoried bridges in Jefferson County rated fair (75.7%); 7 (5.1%) 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	Prestressed concrete tee beam
Length	about 33 ft
Location	Whitehall-yellowstone Trl
NBI structure number	M22121000+00101
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 15 over Prickly Pear Creek	1969	5,987	Fair
I 15 over Prickly Pear Creek	1969	5,987	Fair
S 518 over Int Montana City-i 15	1968	5,885	Good
I 90 over Int Cardwell-s 359	1968	5,599	Fair
I 90 over Int Cardwell-s 359	1968	5,599	Fair
I 90 Eastbound over Boulder River	1968	5,599	Good