State Route 36 over South Fork Trinity River
GoodTrinity County, California · 02-TRI-036-16.82 · Structure no. 05 0026
- Built
- 1979
- 46 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 336 ft
- 2 main spans
- Daily traffic
- 560
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 36 over South Fork Trinity River is a prestressed concrete continuous box beam or girders - multiple carrying State Route 36 over South Fork Trinity River in Trinity County, California. It was built in 1979, so it is 46 years old, younger 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 560 vehicles a day, projected to reach 409 by 2040. The structure is 336 ft (102.4 m) long and 35 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 36 over South Fork Trinity River built?
It was built in 1979, making it 46 years old in 2025.
What condition is State Route 36 over South Fork Trinity River 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 March 2023.
How much traffic does State Route 36 over South Fork Trinity River carry?
About 560 vehicles per day (2009 count).
How long is State Route 36 over South Fork Trinity River?
The structure is 336 ft (102.4 m) long with a longest span of 167 ft (51 m) and a deck 35 ft wide.
Who owns State Route 36 over South Fork Trinity River?
It is owned by the State Highway Agency.