Alderpoint RD over Mcmahon Creek
Good Condition68 years old106 vehicles/day
Location
| State | California |
| County | Humboldt |
| Location | 14 Mi N/o Alderpoint |
| Carries | Alderpoint RD |
| Crosses | Mcmahon Creek |
| Coordinates | 40.32005, -123.66235 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 43.0 ft (13.1 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 112.7 sq m |
| Main Spans | 1 |
| Year Built | 1958 |
Traffic
| Avg Daily Traffic | 106 (2008) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 04C0090 |