Mountain House RD over North Fork Oregon Creek
FairSierra County, California · 9.9 MI South of RTE 49 · Structure no. 13C0031
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected August 2023
- Type
- Tee Beam
- Concrete
- Length
- 51 ft
- 1 main span
- Daily traffic
- 75
- 1998 count
- Owner
- County
- County Highway Agency
About this bridge
Mountain House RD over North Fork Oregon Creek is a concrete tee beam carrying Mountain House RD over North Fork Oregon Creek in Sierra County, California. It was built in 1966, so it is 59 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 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 75 vehicles a day, roughly 5% of them trucks, projected to reach 107 by 2043. The structure is 51 ft (15.6 m) long and 24 ft wide. If it were closed, the detour would be 1.2 mi (2 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 Mountain House RD over North Fork Oregon Creek built?
It was built in 1966, making it 59 years old in 2025.
What condition is Mountain House RD over North Fork Oregon Creek 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 August 2023.
How much traffic does Mountain House RD over North Fork Oregon Creek carry?
About 75 vehicles per day (1998 count), of which roughly 5% are trucks.
How long is Mountain House RD over North Fork Oregon Creek?
The structure is 51 ft (15.6 m) long with a longest span of 48 ft (14.6 m) and a deck 24 ft wide.
Who owns Mountain House RD over North Fork Oregon Creek?
It is owned by the County Highway Agency.