Klamath River Road over Humbug Creek
GoodSiskiyou County, California · At Humbug Creek RD · Structure no. 02C0118
- Built
- 1975
- 50 years old
- Condition
- Good
- inspected July 2022
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 60 ft
- 1 main span
- Daily traffic
- 20
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Klamath River Road over Humbug Creek is a steel stringer/multi-beam or girder carrying Klamath River Road over Humbug Creek in Siskiyou County, California. It was built in 1975, so it is 50 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 20 vehicles a day, roughly 5% of them trucks, projected to reach 28 by 2040. The structure is 60 ft (18.4 m) long and 21 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 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 Klamath River Road over Humbug Creek built?
It was built in 1975, making it 50 years old in 2025.
What condition is Klamath River Road over Humbug Creek 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 July 2022.
How much traffic does Klamath River Road over Humbug Creek carry?
About 20 vehicles per day (2011 count), of which roughly 5% are trucks.
How long is Klamath River Road over Humbug Creek?
The structure is 60 ft (18.4 m) long with a longest span of 58 ft (17.7 m) and a deck 21 ft wide.
Who owns Klamath River Road over Humbug Creek?
It is owned by the County Highway Agency.