U.S. Highway 101 over Richardson Grove Park RD
GoodHumboldt County, California · 01-HUM-101-1.61 · Structure no. 04 0055
- Built
- 1958
- 67 years old
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 87 ft
- 3 main spans
- Daily traffic
- 4,500
- 2014 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Richardson Grove Park RD is a concrete continuous slab carrying U.S. Highway 101 over Richardson Grove Park RD in Humboldt County, California. It was built in 1958, so it is 67 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 4,500 vehicles a day, roughly 16% of them trucks, projected to reach 5,611 by 2041. The structure is 87 ft (26.5 m) long and 33 ft wide. If it were closed, the detour would be 46 mi (74 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Richardson Grove Park RD built?
It was built in 1958, making it 67 years old in 2025.
What condition is U.S. Highway 101 over Richardson Grove Park RD 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 September 2024.
How much traffic does U.S. Highway 101 over Richardson Grove Park RD carry?
About 4,500 vehicles per day (2014 count), of which roughly 16% are trucks.
How long is U.S. Highway 101 over Richardson Grove Park RD?
The structure is 87 ft (26.5 m) long with a longest span of 28 ft (8.5 m) and a deck 33 ft wide.
Who owns U.S. Highway 101 over Richardson Grove Park RD?
It is owned by the State Highway Agency.