6th Street over US Highway 101
FairHumboldt County, California · 01-HUM-101-98.36 · Structure no. 04 0057
- Built
- 1960
- 65 years old
- Condition
- Fair
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 170 ft
- 3 main spans
- Daily traffic
- 700
- 1998 count
- Owner
- State
- State Highway Agency
About this bridge
6th Street over US Highway 101 is a concrete continuous box beam or girders - multiple carrying 6th Street over US Highway 101 in Humboldt County, California. It was built in 1960, so it is 65 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 700 vehicles a day, roughly 10% of them trucks, projected to reach 1,619 by 2042. The structure is 170 ft (51.8 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 6th Street over US Highway 101 built?
It was built in 1960, making it 65 years old in 2025.
What condition is 6th Street over US Highway 101 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 July 2024.
How much traffic does 6th Street over US Highway 101 carry?
About 700 vehicles per day (1998 count), of which roughly 10% are trucks.
How long is 6th Street over US Highway 101?
The structure is 170 ft (51.8 m) long with a longest span of 80 ft (24.4 m) and a deck 37 ft wide.
Who owns 6th Street over US Highway 101?
It is owned by the State Highway Agency.