State Route 99 over Champlin Slough
GoodTehama County, California · 02-TEH-099-9.14 · Structure no. 08 0170
- Built
- 2022
- 3 years old
- Condition
- Good
- inspected March 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 85 ft
- 1 main span
- Daily traffic
- 6,800
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over Champlin Slough is a prestressed concrete box beam or girders - multiple carrying State Route 99 over Champlin Slough in Tehama County, California. It was built in 2022, so it is 3 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 6,800 vehicles a day, roughly 13% of them trucks, projected to reach 8,086 by 2042. The structure is 85 ft (25.9 m) long and 44 ft wide. If it were closed, the detour would be 18 mi (29 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 | 8 Very Good | No problems noted. |
| 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 Champlin Slough built?
It was built in 2022, making it 3 years old in 2025.
What condition is State Route 99 over Champlin Slough 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 March 2023.
How much traffic does State Route 99 over Champlin Slough carry?
About 6,800 vehicles per day (2015 count), of which roughly 13% are trucks.
How long is State Route 99 over Champlin Slough?
The structure is 85 ft (25.9 m) long with a longest span of 80 ft (24.5 m) and a deck 44 ft wide.
Who owns State Route 99 over Champlin Slough?
It is owned by the State Highway Agency.