Ruth Dam Road over Ruth Dam
FairTrinity County, California · 100 W Mad River Road · Structure no. 05C0219
- Built
- 1972
- 53 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 104 ft
- 1 main span
- Daily traffic
- 30
- 2011 count
- Owner
- Local
- Other Local Agency
About this bridge
Ruth Dam Road over Ruth Dam is a steel stringer/multi-beam or girder carrying Ruth Dam Road over Ruth Dam in Trinity County, California. It was built in 1972, so it is 53 years old, younger 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 5 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 30 vehicles a day, roughly 1% of them trucks, projected to reach 107 by 2042. The structure is 104 ft (31.7 m) long and 17 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Ruth Dam Road over Ruth Dam built?
It was built in 1972, making it 53 years old in 2025.
What condition is Ruth Dam Road over Ruth Dam 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 June 2023.
How much traffic does Ruth Dam Road over Ruth Dam carry?
About 30 vehicles per day (2011 count), of which roughly 1% are trucks.
How long is Ruth Dam Road over Ruth Dam?
The structure is 104 ft (31.7 m) long with a longest span of 101 ft (30.8 m) and a deck 17 ft wide.
Who owns Ruth Dam Road over Ruth Dam?
It is owned by the Other Local Agency and maintained by the County Highway Agency.