State Route 299 over US Highway 101
GoodHumboldt County, California · 01-HUM-299-0.01-ARC · Structure no. 04 0161
- Built
- 1956
- 69 years old, rebuilt 1992
- Condition
- Good
- inspected January 2025
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 155 ft
- 1 main span
- Daily traffic
- 12,400
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 299 over US Highway 101 is a prestressed concrete tee beam carrying State Route 299 over US Highway 101 in Humboldt County, California. It was built in 1956 and reconstructed in 1992, so it is 69 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 12,400 vehicles a day, roughly 7% of them trucks, projected to reach 15,925 by 2047. The structure is 155 ft (47.2 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was State Route 299 over US Highway 101 built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1992.
What condition is State Route 299 over US Highway 101 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 State Route 299 over US Highway 101 carry?
About 12,400 vehicles per day (2009 count), of which roughly 7% are trucks.
How long is State Route 299 over US Highway 101?
The structure is 155 ft (47.2 m) long with a longest span of 47 ft (14.3 m) and a deck 35 ft wide.
Who owns State Route 299 over US Highway 101?
It is owned by the State Highway Agency.