Big Flat Road 405 over Hurdygurdy Creek
GoodDel Norte County, California · 2.6 MI N/O S Fork Road · Structure no. 01C0045
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 139 ft
- 1 main span
- Daily traffic
- 100
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Big Flat Road 405 over Hurdygurdy Creek is a prestressed concrete box beam or girders - multiple carrying Big Flat Road 405 over Hurdygurdy Creek in Del Norte County, California. It was built in 2018, so it is 7 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 133 by 2045. The structure is 139 ft (42.4 m) long and 26 ft wide. If it were closed, the detour would be 44.1 mi (71 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Big Flat Road 405 over Hurdygurdy Creek built?
It was built in 2018, making it 7 years old in 2025.
What condition is Big Flat Road 405 over Hurdygurdy 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 June 2023.
How much traffic does Big Flat Road 405 over Hurdygurdy Creek carry?
About 100 vehicles per day (2021 count), of which roughly 10% are trucks.
How long is Big Flat Road 405 over Hurdygurdy Creek?
The structure is 139 ft (42.4 m) long with a longest span of 135 ft (41 m) and a deck 26 ft wide.
Who owns Big Flat Road 405 over Hurdygurdy Creek?
It is owned by the County Highway Agency.