Bridge conditions in Malheur County, Oregon
181 inventoried bridges · 3 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
3 of the 181 bridges the federal inventory lists in Malheur County are rated poor; the rest split 57 good and 121 fair.
- 3 of the 181 bridges in Malheur County, Oregon, are rated in poor condition (1.7%) in the 2025 National Bridge Inventory, as of .
- 57 bridges (31.5%) are rated good and 121 (66.9%) fair.
- The median Malheur County bridge was built in 1976.
- The busiest poor-rated bridge is Or 52 (hwy 492) over Snake River (built 1953), carrying about 4,512 vehicles a day.
Good 31.5% · Fair 66.9% · Poor 1.7% of 181 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Or 52 (hwy 492) over Snake River | 1953 | 4,512 | Poor |
| Little Vly Rd C6 over Vale Main Canal | 1978 | 140 | Poor |
| Owyhee River C1025 over Owyhee River (rome) | 1906 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 30 (hwy 493) over Snake R. (hwy 493) | 1967 | 26,880 | Good |
| US 30 (hwy 493) over I-84 (hwy 6 Mp 376.72) | 1998 | 26,810 | Fair |
| Or 201 (hwy 455) over Malheur River | 1976 | 13,346 | Fair |
| Or 201 (hwy 455) over I-84 (hwy 6 Mp 374.55) | 2008 | 13,346 | Good |
| I-84 (hwy 006) over Owyhee Canal | 1955 | 13,133 | Good |
| I-84 (hwy 006) EB over Snake River | 1960 | 12,977 | Fair |
| I-84 (hwy 006) WB over Snake River | 1960 | 12,977 | Fair |
| I-84 (hwy 006) EB over UPRR (ore-ida) | 1960 | 12,977 | Fair |
| I-84 (hwy 006) WB over UPRR (ore-ida) | 1960 | 12,977 | Fair |
| I-84 (hwy 006) EB over Grigg Road | 1960 | 12,977 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Oregon: Oregon bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.