State Route 197 over Little Mill Creek
Del Norte County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- State Route 197 over Little Mill Creek in Del Norte County, California, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2017, making it 8 years old at the 2025 inventory.
- It carries about 2,500 vehicles a day (traffic count year 2017).
- Its listed owner is the state highway agency.
- It is one of 46 of the 97 inventoried bridges in Del Norte County rated good (47.4%); 9 (9.3%) 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 August 2021, on a 48-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (41.87347, -124.12361)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 89 ft |
| Location | 01-dn-197-6.14 |
| NBI structure number | 01 0084 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2021 |
| Inspection interval (item 91) | 48 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 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.