US Highway 101 NB over Van Duzen River
FairHumboldt County, California · 01-HUM-101-56.84 · Structure no. 04 0017R
- Built
- 1996
- 29 years old
- Condition
- Fair
- inspected July 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 810 ft
- 4 main spans
- Daily traffic
- 6,800
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 NB over Van Duzen River is a prestressed concrete continuous box beam or girders - multiple carrying US Highway 101 NB over Van Duzen River in Humboldt County, California. It was built in 1996, so it is 29 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 6,800 vehicles a day, roughly 12% of them trucks, projected to reach 15,818 by 2041. The structure is 810 ft (246.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 NB over Van Duzen River built?
It was built in 1996, making it 29 years old in 2025.
What condition is US Highway 101 NB over Van Duzen 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 July 2023.
How much traffic does US Highway 101 NB over Van Duzen River carry?
About 6,800 vehicles per day (2010 count), of which roughly 12% are trucks.
How long is US Highway 101 NB over Van Duzen River?
The structure is 810 ft (246.9 m) long with a longest span of 220 ft (67.1 m) and a deck 43 ft wide.
Who owns US Highway 101 NB over Van Duzen River?
It is owned by the State Highway Agency.