Boundary Flat RD over State Route 178
Good Condition58 years old5 vehicles/day
Location
| State | California |
| County | Kern |
| Location | 06-ker-178-r39.88 |
| Carries | Boundary Flat RD |
| Crosses | State Route 178 |
| Coordinates | 35.59861, -118.51449 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 149.9 ft (45.7 m) |
| Max Span | 145.0 ft (44.2 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 361.0 sq m |
| Main Spans | 1 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 5 (2012) |
| Truck Traffic | 20% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 50 0357 |