Elk River Road over Martin Slough
GoodHumboldt County, California · 0.2 MI SE of SR 101 · Structure no. 04C0080
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected June 2023
- Type
- Slab
- Concrete Continuous
- Length
- 80 ft
- 3 main spans
- Daily traffic
- 4,801
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Elk River Road over Martin Slough is a concrete continuous slab carrying Elk River Road over Martin Slough in Humboldt County, California. It was built in 1992, so it is 33 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 4,801 vehicles a day, roughly 5% of them trucks, projected to reach 8,409 by 2045. The structure is 80 ft (24.4 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Elk River Road over Martin Slough built?
It was built in 1992, making it 33 years old in 2025.
What condition is Elk River Road over Martin Slough 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 June 2023.
How much traffic does Elk River Road over Martin Slough carry?
About 4,801 vehicles per day (2011 count), of which roughly 5% are trucks.
How long is Elk River Road over Martin Slough?
The structure is 80 ft (24.4 m) long with a longest span of 32 ft (9.8 m) and a deck 44 ft wide.
Who owns Elk River Road over Martin Slough?
It is owned by the County Highway Agency.