Nat Trails HWY over Marble Ditch
Fair Condition96 years old502 vehicles/day
Location
| State | California |
| County | San Bernardino |
| Location | 5.9 Mi E Kelbaker RD |
| Carries | Nat Trails HWY |
| Crosses | Marble Ditch |
| Coordinates | 34.56196, -115.53872 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 40.0 ft (12.2 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 103.7 sq m |
| Main Spans | 2 |
| Year Built | 1930 (reconstructed 1953) |
Traffic
| Avg Daily Traffic | 502 (2015) |
| Truck Traffic | 30% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 54C0291 |