Road M1 over Black Butte River
Poor Condition40 years old50 vehicles/day
Location
| State | California |
| County | Mendocino |
| Location | .3 Mi. E. Of Eel Riv W.c. |
| Carries | Road M1 |
| Crosses | Black Butte River |
| Coordinates | 39.74274, -123.04480 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 3 (Serious) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Box Beam - Multiple |
| Total Length | 310.0 ft (94.5 m) |
| Max Span | 120.1 ft (36.6 m) |
| Deck Width | 14.8 ft (4.5 m) |
| Deck Area | 425.2 sq m |
| Main Spans | 1 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 50 |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 12 months |
| Owner | U.S. Forest Service |
| Historical Significance | Historical significance is not determined |
| Structure Number | 050856000001016 |