St. John Loop Road over Butter Creek
GoodTrinity County, California · 7.0 MI S Hyampom RD · Structure no. 05C0037
- Built
- 1955
- 70 years old, rebuilt 1991
- Condition
- Good
- inspected May 2022
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 59 ft
- 1 main span
- Daily traffic
- 50
- 1980 count
- Owner
- County
- County Highway Agency
About this bridge
St. John Loop Road over Butter Creek is a steel stringer/multi-beam or girder carrying St. John Loop Road over Butter Creek in Trinity County, California. It was built in 1955 and reconstructed in 1991, so it is 70 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 50 vehicles a day, projected to reach 80 by 2039. The structure is 59 ft (18 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was St. John Loop Road over Butter Creek built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1991.
What condition is St. John Loop Road over Butter Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2022.
How much traffic does St. John Loop Road over Butter Creek carry?
About 50 vehicles per day (1980 count).
How long is St. John Loop Road over Butter Creek?
The structure is 59 ft (18 m) long with a longest span of 52 ft (15.8 m) and a deck 21 ft wide.
Who owns St. John Loop Road over Butter Creek?
It is owned by the County Highway Agency.