St. John Loop Road over Butter Creek
Good Condition71 years old50 vehicles/day
Location
| State | California |
| County | Trinity |
| Location | 7.0 Mi S Hyampom RD |
| Carries | St. John Loop Road |
| Crosses | Butter Creek |
| Coordinates | 40.57092, -123.44200 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 59.1 ft (18 m) |
| Max Span | 51.8 ft (15.8 m) |
| Deck Width | 21.3 ft (6.5 m) |
| Deck Area | 117 sq m |
| Main Spans | 1 |
| Year Built | 1955 (reconstructed 1991) |
Traffic
| Avg Daily Traffic | 50 (1980) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 522 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 05C0037 |