Upper Mad River RD over Mad River
GoodTrinity County, California · Barry Creek Road · Structure no. 05C0163
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 161 ft
- 4 main spans
- Daily traffic
- 31
- 2004 count
- Owner
- County
- County Highway Agency
About this bridge
Upper Mad River RD over Mad River is a concrete continuous slab carrying Upper Mad River RD over Mad River in Trinity County, California. It was built in 1988, so it is 37 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 31 vehicles a day, projected to reach 34 by 2042. The structure is 161 ft (49.2 m) long and 29 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Upper Mad River RD over Mad River built?
It was built in 1988, making it 37 years old in 2025.
What condition is Upper Mad River RD 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 Upper Mad River RD over Mad River carry?
About 31 vehicles per day (2004 count).
How long is Upper Mad River RD over Mad River?
The structure is 161 ft (49.2 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.
Who owns Upper Mad River RD over Mad River?
It is owned by the County Highway Agency.