State Route 299 over North Fork Trinity River
GoodTrinity County, California · 02-TRI-299-36.89 · Structure no. 05 0011
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 225 ft
- 3 main spans
- Daily traffic
- 3,325
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 299 over North Fork Trinity River is a prestressed concrete continuous stringer/multi-beam or girder carrying State Route 299 over North Fork Trinity River in Trinity County, California. It was built in 1984, so it is 41 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 3,325 vehicles a day, projected to reach 2,696 by 2040. The structure is 225 ft (68.6 m) long and 39 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 299 over North Fork Trinity River built?
It was built in 1984, making it 41 years old in 2025.
What condition is State Route 299 over North 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 299 over North Fork Trinity River carry?
About 3,325 vehicles per day (2009 count).
How long is State Route 299 over North Fork Trinity River?
The structure is 225 ft (68.6 m) long with a longest span of 106 ft (32.3 m) and a deck 39 ft wide.
Who owns State Route 299 over North Fork Trinity River?
It is owned by the State Highway Agency.