Interstate 40 over Blair Ditch
Good Condition65 years old38,500 vehicles/day
Location
| State | California |
| County | San Bernardino |
| Location | 08-sbd-040-0.46-bsw |
| Carries | Interstate 40 |
| Crosses | Blair Ditch |
| Coordinates | 34.88660, -116.99990 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 25.9 ft (7.9 m) |
| Max Span | 7.9 ft (2.4 m) |
| Deck Area | 176.2 sq m |
| Main Spans | 3 |
| Year Built | 1961 |
Traffic
| Avg Daily Traffic | 38,500 (2024) |
| Truck Traffic | 35% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 54 0784 |