US Highway 101 SB over Van Duzen River Overflow
GoodHumboldt County, California · 01-HUM-101-57.36 · Structure no. 04 0031L
- Built
- 1952
- 73 years old, rebuilt 1992
- Condition
- Good
- inspected July 2023
- Type
- Slab
- Concrete Continuous
- Length
- 63 ft
- 3 main spans
- Daily traffic
- 4,400
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 SB over Van Duzen River Overflow is a concrete continuous slab carrying US Highway 101 SB over Van Duzen River Overflow in Humboldt County, California. It was built in 1952 and reconstructed in 1992, so it is 73 years old, older 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 4,400 vehicles a day, roughly 12% of them trucks, projected to reach 6,583 by 2045. The structure is 63 ft (19.2 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US Highway 101 SB over Van Duzen River Overflow built?
It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1992.
What condition is US Highway 101 SB over Van Duzen River Overflow 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 2023.
How much traffic does US Highway 101 SB over Van Duzen River Overflow carry?
About 4,400 vehicles per day (2009 count), of which roughly 12% are trucks.
How long is US Highway 101 SB over Van Duzen River Overflow?
The structure is 63 ft (19.2 m) long with a longest span of 24 ft (7.3 m) and a deck 42 ft wide.
Who owns US Highway 101 SB over Van Duzen River Overflow?
It is owned by the State Highway Agency.