Trinity Dam Blvd over Trinity River
FairTrinity County, California · .2 MI S/O Rush Creek RD · Structure no. 05C0170
- Built
- 1963
- 62 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 300 ft
- 3 main spans
- Daily traffic
- 450
- 2000 count
- Owner
- County
- County Highway Agency
About this bridge
Trinity Dam Blvd over Trinity River is a steel continuous stringer/multi-beam or girder carrying Trinity Dam Blvd over Trinity River in Trinity County, California. It was built in 1963, so it is 62 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 450 vehicles a day, roughly 5% of them trucks, projected to reach 640 by 2042. The structure is 300 ft (91.4 m) long and 31 ft wide. If it were closed, the detour would be 16.8 mi (27 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Trinity Dam Blvd over Trinity River built?
It was built in 1963, making it 62 years old in 2025.
What condition is Trinity Dam Blvd over Trinity River 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 September 2024.
How much traffic does Trinity Dam Blvd over Trinity River carry?
About 450 vehicles per day (2000 count), of which roughly 5% are trucks.
How long is Trinity Dam Blvd over Trinity River?
The structure is 300 ft (91.4 m) long with a longest span of 125 ft (38.1 m) and a deck 31 ft wide.
Who owns Trinity Dam Blvd over Trinity River?
It is owned by the County Highway Agency.