Rock Creek Road over East Fork Mill Creek
Del Norte County, California · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rock Creek Road over East Fork Mill Creek in Del Norte County, California, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1950, making it 75 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2003).
- It is one of 9 of the 97 inventoried bridges in Del Norte County rated poor (9.3%); 9 (9.3%) are rated poor.
- 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 → (41.72537, -124.07564)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 5 | Fair condition |
| Superstructure | 5 | Fair condition |
| Substructure | 4 | Poor condition |
Bridge details
| Structure | Steel multiple box beam |
| Length | about 89 ft |
| Location | 4.1 Miles East of US 101 |
| NBI structure number | 01P0015 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the California department of transportation.
Busiest bridges in Del Norte County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. Highway 101 over Elk Creek | 1944 | 21,500 | Good |
| U.S. Highway 101 over Gilbert Creek | 1953 | 7,300 | Good |
| U.S. Highway 101 over Rowdy Creek | 1951 | 7,250 | Good |
| U.S. Highway 101 over Dominie Creek | 2021 | 7,250 | Good |
| U.S. Highway 101 over Smith Riv South Bank Rd | 2023 | 7,200 | Good |
| U.S. Highway 101 over Smith River Overflow | 1955 | 6,700 | Good |
All bridges nearby: Del Norte County, CA bridge conditions · every bridge in Del Norte County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.