State Route 99 SB over East First Ave
GoodButte County, California · 03-BUT-099-R33.28-CHC · Structure no. 12 0153L
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 153 ft
- 3 main spans
- Daily traffic
- 24,750
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 99 SB over East First Ave is a concrete continuous box beam or girders - multiple carrying State Route 99 SB over East First Ave in Butte 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 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 24,750 vehicles a day, roughly 7% of them trucks, projected to reach 46,308 by 2041. The structure is 153 ft (46.6 m) long and 40 ft wide.
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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 99 SB over East First Ave built?
It was built in 1966, making it 59 years old in 2025.
What condition is State Route 99 SB over East First Ave 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 May 2023.
How much traffic does State Route 99 SB over East First Ave carry?
About 24,750 vehicles per day (2020 count), of which roughly 7% are trucks.
How long is State Route 99 SB over East First Ave?
The structure is 153 ft (46.6 m) long with a longest span of 85 ft (25.9 m) and a deck 40 ft wide.
Who owns State Route 99 SB over East First Ave?
It is owned by the State Highway Agency.