U.S. Highway 101 over Klamath River
FairDel Norte County, California · 01-DN-101-R4.04 · Structure no. 01 0028
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 2,038 ft
- 12 main spans
- Daily traffic
- 3,600
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Klamath River is a concrete continuous box beam or girders - multiple carrying U.S. Highway 101 over Klamath River in Del Norte County, California. It was built in 1965, so it is 60 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 3,600 vehicles a day, roughly 18% of them trucks, projected to reach 4,460 by 2043. The structure is 2,038 ft (621.2 m) long and 34 ft wide. If it were closed, the detour would be 123.7 mi (199 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Klamath River built?
It was built in 1965, making it 60 years old in 2025.
What condition is U.S. Highway 101 over Klamath 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 August 2023.
How much traffic does U.S. Highway 101 over Klamath River carry?
About 3,600 vehicles per day (2009 count), of which roughly 18% are trucks.
How long is U.S. Highway 101 over Klamath River?
The structure is 2,038 ft (621.2 m) long with a longest span of 175 ft (53.3 m) and a deck 34 ft wide.
Who owns U.S. Highway 101 over Klamath River?
It is owned by the State Highway Agency.