Home › Idaho › Bingham County › Irr Bia Rte 8 over Blackfoot River

Irr Bia Rte 8 over Blackfoot River

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

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

Irr Bia Rte 8 over Blackfoot River in Bingham 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 1975, making it 50 years old at the 2025 inventory.
It carries about 210 vehicles a day (traffic count year 2023).
It is one of 44 of the 263 inventoried bridges in Bingham County rated good (16.7%); 9 (3.4%) 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 90 ft
Location	9 Km E of Hwy 191&BLKFOOT
NBI structure number	00000000000P413
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 15 Nbl & Sbl over Ross Fork Creek	2023	29,000	Good
I 15 over Riverside Canal	2019	26,000	Good
US 26 Ebl & Wbl over Snake River;w.blackfoot	1965	18,000	Fair
I 15 Nbl over Aberdeen Springfield Cnl	1962	14,250	Fair
I 15 Sbl over Aberdeen Springfield Cnl	1962	14,250	Fair
I 15 Nbl over Peoples Canal	1962	14,250	Fair