State Route 99 over Campbell Creek
FairButte County, California · 03-BUT-099-45.70 · Structure no. 12 0029
- Built
- 1914
- 111 years old, rebuilt 1970
- Condition
- Fair
- inspected May 2024
- Type
- Tee Beam
- Concrete Continuous
- Length
- 43 ft
- 2 main spans
- Daily traffic
- 11,600
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over Campbell Creek is a concrete continuous tee beam carrying State Route 99 over Campbell Creek in Butte County, California. It was built in 1914 and reconstructed in 1970, so it is 111 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 11,600 vehicles a day, roughly 9% of them trucks, projected to reach 21,406 by 2041. The structure is 43 ft (13.1 m) long and 42 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 over Campbell Creek built?
It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1970.
What condition is State Route 99 over Campbell 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 May 2024.
How much traffic does State Route 99 over Campbell Creek carry?
About 11,600 vehicles per day (2020 count), of which roughly 9% are trucks.
How long is State Route 99 over Campbell Creek?
The structure is 43 ft (13.1 m) long with a longest span of 21 ft (6.4 m) and a deck 42 ft wide.
Who owns State Route 99 over Campbell Creek?
It is owned by the State Highway Agency.