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Mcgary Grade Road over Potlach River

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

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

Mcgary Grade Road over Potlach River in Nez Perce 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 8 (very good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 110 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 20 of the 72 inventoried bridges in Nez Perce County rated good (27.8%); 3 (4.2%) 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 stringer or multi-beam girder
Length	about 160 ft
Location	0.8 N. 1.0 E. Juliaetta
NBI structure number	000000000029841
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
SMA7344;BRYDEN Cyn over Snake R;high/southway Br	1982	22,000	Fair
US 12 over US 12;SNAKE River	1939	21,000	Fair
US 12 over Clearwater River;bnrr	1951	21,000	Fair
US 95 over Hatwai Creek	1979	13,000	Fair
US 95 over US 12;US 12-95 Ic	1964	11,000	Fair
US 12 over Aprroach Rd;catholic CR.	1968	8,400	Good