Bridge conditions in Plumas County, California
165 inventoried bridges · 5 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 165 bridges in Plumas County: 43 rated good, 117 fair, and 5 poor.
- 5 of the 165 bridges in Plumas County, California, are rated in poor condition (3.0%) in the 2025 National Bridge Inventory, as of .
- 43 bridges (26.1%) are rated good and 117 (70.9%) fair.
- The median Plumas County bridge was built in 1962.
- The busiest poor-rated bridge is Gulling Street over Middle Fork Feather Riv (built 1954), carrying about 10,046 vehicles a day.
Good 26.1% · Fair 70.9% · Poor 3.0% of 165 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 |
|---|---|---|---|
| Gulling Street over Middle Fork Feather Riv | 1954 | 10,046 | Poor |
| Road 23n37 over Eureka Creek | 1942 | 50 | Poor |
| Actually Rd 28n03 over Indian Creek | 1965 | 50 | Poor |
| Road 28n03 over Indian Creek | 1965 | 50 | Poor |
| Road 24n28 over Slate Creek | 1956 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Gulling Street over UP RR & BNSF Ry | 1954 | 10,046 | Fair |
| Gulling Street over Middle Fork Feather Riv | 1954 | 10,046 | Poor |
| State Route 70 over Spanish Creek | 1964 | 6,700 | Fair |
| State Route 70 over Clear Stream | 1937 | 6,700 | Good |
| State Route 70 over Humbug Creek | 1969 | 6,200 | Good |
| State Route 36 over North Fork Feather River | 1966 | 5,500 | Fair |
| State Route 36 over Bailey Creek | 1966 | 5,000 | Good |
| State Route 36 over Chester Flood Cntrl Chan | 1975 | 3,550 | Good |
| State Route 70 over Greenhorn Creek | 1941 | 3,425 | Fair |
| State Route 70 over Greenhorn CR UP RR BNSF | 1956 | 3,425 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of California: California 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.