Lighthouse Road over Mill Creek
GoodHumboldt County, California · 1.5 MI SW of Mattole RD · Structure no. 04C0250
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected March 2022
- Type
- Slab
- Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 3
- 2011 count
- Owner
- County
- County Highway Agency
About this bridge
Lighthouse Road over Mill Creek is a concrete slab carrying Lighthouse Road over Mill Creek in Humboldt County, California. It was built in 2003, so it is 22 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 vehicles a day, roughly 6% of them trucks, projected to reach 4 by 2044. The structure is 42 ft (12.7 m) long and 29 ft wide. If it were closed, the detour would be 4.3 mi (7 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 Lighthouse Road over Mill Creek built?
It was built in 2003, making it 22 years old in 2025.
What condition is Lighthouse Road over Mill 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 March 2022.
How much traffic does Lighthouse Road over Mill Creek carry?
About 3 vehicles per day (2011 count), of which roughly 6% are trucks.
How long is Lighthouse Road over Mill Creek?
The structure is 42 ft (12.7 m) long with a longest span of 40 ft (12.2 m) and a deck 29 ft wide.
Who owns Lighthouse Road over Mill Creek?
It is owned by the County Highway Agency.