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Usfs Rd over Silvies River (seneca)

Grant County, Oregon · rated Fair in the 2025 National Bridge Inventory

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

Usfs Rd over Silvies River (seneca) in Grant County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1990, making it 35 years old at the 2025 inventory.
It carries about 20 vehicles a day (traffic count year 2020).
Its listed owner is a city or municipal highway agency.
It is one of 70 of the 145 inventoried bridges in Grant County rated fair (48.3%); 6 (4.1%) 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	Timber stringer or multi-beam girder
Length	about 64 ft
Location	0.15 Mi W US 395
NBI structure number	23B001 015
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 26 (hwy 005) over Canyon Creek (john Day)	2002	6,551	Good
US 26 (hwy 005) over John Day River (coles)	2010	2,849	Good
US 26 (hwy 005) over Beech Cr(mt Vernon)	1956	2,836	Fair
US 26 (hwy 005) over Dixie Crk (prairie City)	1939	2,104	Fair
US 26 (hwy 005) over Indian Creek	1939	1,893	Fair
US 26 (hwy 005) over John Day R(prairie City)	1939	1,893	Fair