Sulphur Moutain Rd over Dennison Creek
Ventura County, California · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Sulphur Moutain Rd over Dennison Creek in Ventura 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 1930 and reconstructed in 1976, making it 95 years old at the 2025 inventory.
- It carries about 300 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 288 of the 501 inventoried bridges in Ventura County rated good (57.5%); 12 (2.4%) are rated poor.
- 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 → (34.43559, -119.16115)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 25 ft |
| Location | 0.1 Mi S of S.R. 150 |
| NBI structure number | 52C0186 |
| Condition class | Good |
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.