RD 305 (mapes Rd) over Susan River Overflow #6
Fair Condition48 years old100 vehicles/day
Location
| State | California |
| County | Lassen |
| Location | 1.7 Mi E/o RD 304 |
| Carries | RD 305 (mapes Rd) |
| Crosses | Susan River Overflow #6 |
| Coordinates | 40.33739, -120.33487 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 55.4 ft (16.9 m) |
| Max Span | 18.7 ft (5.7 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 123.4 sq m |
| Main Spans | 3 |
| Year Built | 1978 |
Traffic
| Avg Daily Traffic | 100 (1974) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 07C0043 |