State Route 99 over Western Canal
FairButte County, California · 03-BUT-099-14.03 · Structure no. 12 0119
- Built
- 1952
- 73 years old, rebuilt 2021
- Condition
- Fair
- inspected May 2024
- Type
- Slab
- Concrete Continuous
- Length
- 125 ft
- 4 main spans
- Daily traffic
- 10,000
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 over Western Canal is a concrete continuous slab carrying State Route 99 over Western Canal in Butte County, California. It was built in 1952 and reconstructed in 2021, so it is 73 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 10,000 vehicles a day, roughly 10% of them trucks, projected to reach 20,884 by 2041. The structure is 125 ft (38.1 m) long and 44 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Western Canal built?
It was built in 1952, making it 73 years old in 2025. It was reconstructed in 2021.
What condition is State Route 99 over Western Canal 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 Western Canal carry?
About 10,000 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is State Route 99 over Western Canal?
The structure is 125 ft (38.1 m) long with a longest span of 31 ft (9.4 m) and a deck 44 ft wide.
Who owns State Route 99 over Western Canal?
It is owned by the State Highway Agency.