North Fork Road over Mattole Creek
FairHumboldt County, California · 1.5 MI N/O Mattole RD · Structure no. 04C0247
- Built
- 1996
- 29 years old
- Condition
- Fair
- inspected March 2024
- Type
- Slab
- Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 30
- 2008 count
- Owner
- County
- County Highway Agency
About this bridge
North Fork Road over Mattole Creek is a concrete slab carrying North Fork Road over Mattole Creek in Humboldt County, California. It was built in 1996, so it is 29 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 30 vehicles a day, roughly 5% of them trucks, projected to reach 61 by 2042. The structure is 43 ft (13 m) long and 24 ft wide. If it were closed, the detour would be 61.5 mi (99 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was North Fork Road over Mattole Creek built?
It was built in 1996, making it 29 years old in 2025.
What condition is North Fork Road over Mattole Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.
How much traffic does North Fork Road over Mattole Creek carry?
About 30 vehicles per day (2008 count), of which roughly 5% are trucks.
How long is North Fork Road over Mattole Creek?
The structure is 43 ft (13 m) long with a longest span of 43 ft (13 m) and a deck 24 ft wide.
Who owns North Fork Road over Mattole Creek?
It is owned by the County Highway Agency.