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Snake Rvr Ave Ramp over Ramp;snake River;high Br

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

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

Snake Rvr Ave Ramp over Ramp;snake River;high Br 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 7 (good condition) on the 0-9 scale.
It was built in 1982, making it 43 years old at the 2025 inventory.
It carries about 5,550 vehicles a day (traffic count year 2023).
Its listed owner is a city or municipal 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	Continuous prestressed concrete single box beam
Length	about 549 ft
Location	In Lewiston
NBI structure number	000000000021195
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