Trinity Mtn RD over French Gulch
FairShasta County, California · French Gulch RD · Structure no. 06C0252
- Built
- 1922
- 103 years old, rebuilt 1965
- Condition
- Fair
- inspected August 2024
- Type
- Tee Beam
- Concrete
- Length
- 27 ft
- 1 main span
- Daily traffic
- 742
- 2012 count
- Owner
- County
- County Highway Agency
About this bridge
Trinity Mtn RD over French Gulch is a concrete tee beam carrying Trinity Mtn RD over French Gulch in Shasta County, California. It was built in 1922 and reconstructed in 1965, so it is 103 years old, older than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 742 vehicles a day, roughly 5% of them trucks, projected to reach 1,308 by 2044. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 11.8 mi (19 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Trinity Mtn RD over French Gulch built?
It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1965.
What condition is Trinity Mtn RD over French Gulch in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does Trinity Mtn RD over French Gulch carry?
About 742 vehicles per day (2012 count), of which roughly 5% are trucks.
How long is Trinity Mtn RD over French Gulch?
The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.
Who owns Trinity Mtn RD over French Gulch?
It is owned by the County Highway Agency.