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Irr Bia Rte 9 over Owyhee River

Elko County, Nevada · rated Fair in the 2025 National Bridge Inventory

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

Irr Bia Rte 9 over Owyhee River in Elko County, Nevada, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1975, making it 50 years old at the 2025 inventory.
It carries about 300 vehicles a day (traffic count year 2024).
It is one of 122 of the 221 inventoried bridges in Elko County rated fair (55.2%); 5 (2.3%) 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	Concrete stringer or multi-beam girder
Length	about 76 ft
Location	7.3 Km SE to Owyhee
NBI structure number	00000000000H305
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
SR225 Mtn City Hw over I 80	1976	29,800	Good
12th ST over Humboldt Rvr	1979	18,400	Fair
12TH St over Water St Sprr UPRR	1979	18,400	Fair
I 80 over Dry Susie Crk	1976	11,300	Fair
I 80 over Dry Wash	1968	10,400	Fair
I 80 over Marys Crk	1976	9,350	Fair