Butterfly Ave over Sacramento River
FairSiskiyou County, California · W of Rio Blanco RD · Structure no. 02C0076
- Built
- 1915
- 110 years old, rebuilt 1956
- Condition
- Fair
- inspected June 2023
- Type
- Girder and Floorbeam System
- Steel
- Length
- 83 ft
- 1 main span
- Daily traffic
- 320
- 2011 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Butterfly Ave over Sacramento River is a steel girder and floorbeam system carrying Butterfly Ave over Sacramento River in Siskiyou County, California. It was built in 1915 and reconstructed in 1956, so it is 110 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 320 vehicles a day, roughly 5% of them trucks, projected to reach 222 by 2041. The structure is 83 ft (25.3 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Butterfly Ave over Sacramento River built?
It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1956.
What condition is Butterfly Ave over Sacramento River 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 June 2023.
How much traffic does Butterfly Ave over Sacramento River carry?
About 320 vehicles per day (2011 count), of which roughly 5% are trucks.
How long is Butterfly Ave over Sacramento River?
The structure is 83 ft (25.3 m) long with a longest span of 80 ft (24.4 m) and a deck 30 ft wide.
Who owns Butterfly Ave over Sacramento River?
It is owned by the City or Municipal Highway Agency.