Stethem Road over Oxnard Drainage Canal
Ventura County, California · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Stethem Road over Oxnard Drainage Canal in Ventura County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 500 vehicles a day (traffic count year 2013).
- It is one of 201 of the 501 inventoried bridges in Ventura County rated fair (40.1%); 12 (2.4%) 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 2023, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (34.15363, -119.21127)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 21 ft |
| Location | Navbase Port Hueneme |
| NBI structure number | 1CA5135 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 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 Ventura County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| U.S. Highway 101 over Hampshire Rd | 1966 | 193,000 | Fair |
| U.S. Highway 101 over Conejo School Rd | 1966 | 193,000 | Fair |
| U.S. Highway 101 over Rancho Rd | 1970 | 193,000 | Good |
| U.S. Highway 101 over S101-n23 Connector Ramp | 1970 | 193,000 | Good |
| U.S. Highway 101 over Moorpark Rd | 1962 | 192,000 | Fair |
| U.S. Highway 101 over Hillside | 1982 | 192,000 | Good |
All bridges nearby: Ventura County, CA bridge conditions · every bridge in Ventura County · California bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.