State Route 299 over Trinity River
GoodTrinity County, California · 02-TRI-299-R3.44 · Structure no. 05 0082
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 485 ft
- 3 main spans
- Daily traffic
- 3,800
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 299 over Trinity River is a prestressed concrete continuous box beam or girders - multiple carrying State Route 299 over Trinity River in Trinity County, California. It was built in 1991, so it is 34 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 3,800 vehicles a day, projected to reach 4,459 by 2045. The structure is 485 ft (147.8 m) long and 39 ft wide.
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 Trinity River built?
It was built in 1991, making it 34 years old in 2025.
What condition is State Route 299 over 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 January 2025.
How much traffic does State Route 299 over Trinity River carry?
About 3,800 vehicles per day (2009 count).
How long is State Route 299 over Trinity River?
The structure is 485 ft (147.8 m) long with a longest span of 215 ft (65.5 m) and a deck 39 ft wide.
Who owns State Route 299 over Trinity River?
It is owned by the State Highway Agency.