Ruth-Zenia Road over Mad River
GoodTrinity County, California · 17.0 MI S of S.H.36 · Structure no. 05C0062
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 182 ft
- 2 main spans
- Daily traffic
- 167
- 2013 count
- Owner
- County
- County Highway Agency
About this bridge
Ruth-Zenia Road over Mad River is a concrete continuous box beam or girders - multiple carrying Ruth-Zenia Road over Mad 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 167 vehicles a day, roughly 2% of them trucks, projected to reach 128 by 2042. The structure is 182 ft (55.6 m) long and 29 ft wide. If it were closed, the detour would be 44.7 mi (72 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 Ruth-Zenia Road over Mad River built?
It was built in 1991, making it 34 years old in 2025.
What condition is Ruth-Zenia Road over Mad 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 June 2023.
How much traffic does Ruth-Zenia Road over Mad River carry?
About 167 vehicles per day (2013 count), of which roughly 2% are trucks.
How long is Ruth-Zenia Road over Mad River?
The structure is 182 ft (55.6 m) long with a longest span of 90 ft (27.4 m) and a deck 29 ft wide.
Who owns Ruth-Zenia Road over Mad River?
It is owned by the County Highway Agency.