U.S. Highway 101 over State Route 283
FairHumboldt County, California · 01-HUM-101-R51.83 · Structure no. 04 0234
- Built
- 1976
- 49 years old
- Condition
- Fair
- inspected July 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 90 ft
- 1 main span
- Daily traffic
- 11,000
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over State Route 283 is a prestressed concrete box beam or girders - multiple carrying U.S. Highway 101 over State Route 283 in Humboldt County, California. It was built in 1976, so it is 49 years old, younger 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 11,000 vehicles a day, roughly 16% of them trucks, projected to reach 17,010 by 2041. The structure is 90 ft (27.4 m) long and 100 ft wide.
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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over State Route 283 built?
It was built in 1976, making it 49 years old in 2025.
What condition is U.S. Highway 101 over State Route 283 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 2023.
How much traffic does U.S. Highway 101 over State Route 283 carry?
About 11,000 vehicles per day (2010 count), of which roughly 16% are trucks.
How long is U.S. Highway 101 over State Route 283?
The structure is 90 ft (27.4 m) long with a longest span of 87 ft (26.5 m) and a deck 100 ft wide.
Who owns U.S. Highway 101 over State Route 283?
It is owned by the State Highway Agency.