U.S. Highway 101 over Mcdonald Creek
GoodHumboldt County, California · 01-HUM-101-114.54 · Structure no. 04 0256
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 27 ft
- 1 main span
- Daily traffic
- 4,300
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
U.S. Highway 101 over Mcdonald Creek is a concrete slab carrying U.S. Highway 101 over Mcdonald Creek in Humboldt County, California. It was built in 1972, so it is 53 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 4,300 vehicles a day, roughly 14% of them trucks, projected to reach 5,620 by 2042. The structure is 27 ft (8.2 m) long and 35 ft wide. If it were closed, the detour would be 69 mi (111 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was U.S. Highway 101 over Mcdonald Creek built?
It was built in 1972, making it 53 years old in 2025.
What condition is U.S. Highway 101 over Mcdonald 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 Mcdonald Creek carry?
About 4,300 vehicles per day (2009 count), of which roughly 14% are trucks.
How long is U.S. Highway 101 over Mcdonald Creek?
The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 35 ft wide.
Who owns U.S. Highway 101 over Mcdonald Creek?
It is owned by the State Highway Agency.