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Blackfoot River Rd over Blackfoot River

Caribou County, Idaho · rated Good in the 2025 National Bridge Inventory

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

Blackfoot River Rd over Blackfoot River in Caribou County, Idaho, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1980, making it 45 years old at the 2025 inventory.
It carries about 1,000 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 12 of the 45 inventoried bridges in Caribou County rated good (26.7%); 2 (4.4%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete tee beam
Length	about 100 ft
Location	11.4N 2.5E Soda Springs
NBI structure number	000000000023210
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
SH 34 over Uprr;sodas 3RD E.st Op	1978	5,600	Fair
US 30 over UPRR; Soda Springs Op	1988	3,500	Fair
SH 34 over Bear River;grace Bridge	1974	2,200	Fair
SH 34 over North Extension Canal	1978	2,200	Fair
SH 34 over Blackfoot River	1979	770	Fair
SH 34 over Little Blackfoot River	1979	770	Fair