US Highway 101 NB over Jacoby Creek
GoodHumboldt County, California · 01-HUM-101-84.50-ARC · Structure no. 04 0023R
- Built
- 1955
- 70 years old, rebuilt 2022
- Condition
- Good
- inspected January 2025
- Type
- Slab
- Concrete Continuous
- Length
- 75 ft
- 3 main spans
- Daily traffic
- 18,125
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
US Highway 101 NB over Jacoby Creek is a concrete continuous slab carrying US Highway 101 NB over Jacoby Creek in Humboldt County, California. It was built in 1955 and reconstructed in 2022, so it is 70 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 18,125 vehicles a day, roughly 7% of them trucks, projected to reach 24,844 by 2045. The structure is 75 ft (22.9 m) long and 41 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 NB over Jacoby Creek built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2022.
What condition is US Highway 101 NB over Jacoby Creek 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 January 2025.
How much traffic does US Highway 101 NB over Jacoby Creek carry?
About 18,125 vehicles per day (2009 count), of which roughly 7% are trucks.
How long is US Highway 101 NB over Jacoby Creek?
The structure is 75 ft (22.9 m) long with a longest span of 24 ft (7.3 m) and a deck 41 ft wide.
Who owns US Highway 101 NB over Jacoby Creek?
It is owned by the State Highway Agency.