Grizzly Flat Road over Steely Fk Cosumnes River
El Dorado County, California · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Grizzly Flat Road over Steely Fk Cosumnes River in El Dorado County, California, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1936, making it 89 years old at the 2025 inventory.
- It carries about 2,080 vehicles a day (traffic count year 2010).
- Its listed owner is the county highway agency.
- It is one of 11 of the 192 inventoried bridges in El Dorado County rated poor (5.7%); 11 (5.7%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2023, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (38.62064, -120.57947)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 65 ft |
| Location | 7.0 Mi E of Mt Aukum Rd |
| NBI structure number | 25C0090 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in El Dorado County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. Highway 50 over Old Silva Valley Parkway | 1965 | 95,000 | Good |
| U.S. Highway 50 over Carson Creek | 1939 | 72,000 | Good |
| US Highway 50 over Latrobe Road | 2009 | 72,000 | Good |
| U.S. Highway 50 WB over Bass Lake Road | 1966 | 60,000 | Good |
| Missouri Flat Road over US Highway 50 | 2008 | 60,000 | Good |
| US Highway 50 over West Placerville Drive | 2009 | 40,000 | Good |
All bridges nearby: El Dorado County, CA bridge conditions · every bridge in El Dorado County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.