U.S. Highway 101 over Boyes Creek
GoodHumboldt County, California · 01-HUM-101-R128.97 · Structure no. 04 0286
- Built
- 1989
- 36 years old
- Condition
- Good
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 1,273 ft
- 7 main spans
- Daily traffic
- 3,100
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Boyes Creek is a prestressed concrete continuous box beam or girders - multiple carrying U.S. Highway 101 over Boyes Creek in Humboldt County, California. It was built in 1989, so it is 36 years old, younger 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 3,100 vehicles a day, roughly 15% of them trucks, projected to reach 4,684 by 2042. The structure is 1,273 ft (388 m) long and 74 ft wide. If it were closed, the detour would be 9.9 mi (16 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 U.S. Highway 101 over Boyes Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is U.S. Highway 101 over Boyes 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 July 2024.
How much traffic does U.S. Highway 101 over Boyes Creek carry?
About 3,100 vehicles per day (2009 count), of which roughly 15% are trucks.
How long is U.S. Highway 101 over Boyes Creek?
The structure is 1,273 ft (388 m) long with a longest span of 190 ft (57.9 m) and a deck 74 ft wide.
Who owns U.S. Highway 101 over Boyes Creek?
It is owned by the State Highway Agency.