Bridge conditions in Del Norte County, California
97 inventoried bridges · 9 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
9 of the 97 bridges the federal inventory lists in Del Norte County are rated poor; the rest split 46 good and 42 fair.
- 9 of the 97 bridges in Del Norte County, California, are rated in poor condition (9.3%) in the 2025 National Bridge Inventory, as of .
- 46 bridges (47.4%) are rated good and 42 (43.3%) fair.
- The median Del Norte County bridge was built in 1971.
- The busiest poor-rated bridge is No Data Entered over No Data Entered (built 1981), carrying about 50 vehicles a day.
Good 47.4% · Fair 43.3% · Poor 9.3% of 97 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 |
|---|---|---|---|
| No Data Entered over No Data Entered | 1981 | 50 | Poor |
| No Data Entered over Griffin Creek | 1978 | 50 | Poor |
| Hamilton Road over West Branch Mill Creek | 1950 | 25 | Poor |
| Chapman Street over Hoppow Creek | 1965 | 20 | Poor |
| Old Gasquet Toll over Eighteen Mile Creek | 1970 | 20 | Poor |
| Rock Creek Road over East Fork Mill Creek | 1950 | 10 | Poor |
| West Branch Road over West Branch Mill Creek | 1950 | 10 | Poor |
| Childs Hill Road over Rock Creek | 1950 | 10 | Poor |
| Childs Hill Road over East Fork Mill Creek | 1950 | 10 | Poor |
Busiest bridges in the 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 |
| U.S. Highway 101 over Smith Riv South Bank Rd | 1940 | 6,500 | Fair |
| US Highway 101 SB over Hillside | 2005 | 5,000 | Fair |
| U.S. Highway 101 over Panther Creek | 2024 | 4,900 | Good |
| U.S. Highway 101 over Hunter Creek | 2023 | 4,900 | 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.