State Route 178 over Kern River
Fair Condition55 years old4,200 vehicles/day
Location
| State | California |
| County | Kern |
| Location | 06-ker-178-r40.00 |
| Carries | State Route 178 |
| Crosses | Kern River |
| Coordinates | 35.59862, -118.51229 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 503.0 ft (153.3 m) |
| Max Span | 200.1 ft (61 m) |
| Deck Width | 63.0 ft (19.2 m) |
| Deck Area | 2943.4 sq m |
| Main Spans | 3 |
| Year Built | 1971 |
Traffic
| Avg Daily Traffic | 4,200 (2009) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 50 0280 |