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Ambrose Creek Rd over Bitterroot Canal 093

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

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

Ambrose Creek Rd over Bitterroot Canal 093 in Ravalli 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 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 77 of the 150 inventoried bridges in Ravalli County rated fair (51.3%); 12 (8.0%) 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 channel beam
Length	about 29 ft
Location	6M SE Florence
NBI structure number	L41036004+05001
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 93 over Mill Creek	2011	15,852	Good
US 93 over Corvallis Canal	1980	14,714	Good
US 93 over Bitterroot River	2005	14,573	Fair
US 93 over Blodgett Creek	2008	14,573	Fair
US 93 over S Fork Bear Creek	2011	13,924	Fair
US 93 over N Fork Bear Creek	2011	13,924	Good