Structure 1CA5135 · Ventura County, CA
Carries Stethem Road over Oxnard Drainage Canal, Navbase Port Hueneme.
A culvert 22 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.
| State | California |
| County | Ventura |
| Location | Navbase Port Hueneme |
| Carries | Stethem Road |
| Crosses | Oxnard Drainage Canal |
| Coordinates | 34.15363, -119.21127 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 10.5 ft (3.2 m) |
| Deck Width | 65.9 ft (20.1 m) |
| Deck Area | 134.7 sq m |
| Main Spans | 2 |
| Year Built | 1971 |
| Avg Daily Traffic | 500 (2013) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | August 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Navy/Marines |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 1CA5135 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.