18N03 over Middle Fork Stony Creek
FairColusa County, California · 2.25 Mi. North of 18N01 · Structure no. 050853000001007
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 52 ft
- 1 main span
- Daily traffic
- 80
- 1993 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
18N03 over Middle Fork Stony Creek is a steel stringer/multi-beam or girder carrying 18N03 over Middle Fork Stony Creek in Colusa County, California. It was built in 1966, so it is 59 years old, older 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 80 vehicles a day, projected to reach 120 by 2045. The structure is 52 ft (15.8 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 18N03 over Middle Fork Stony Creek built?
It was built in 1966, making it 59 years old in 2025.
What condition is 18N03 over Middle Fork Stony 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 August 2023.
How much traffic does 18N03 over Middle Fork Stony Creek carry?
About 80 vehicles per day (1993 count).
How long is 18N03 over Middle Fork Stony Creek?
The structure is 52 ft (15.8 m) long with a longest span of 51 ft (15.5 m) and a deck 16 ft wide.
Who owns 18N03 over Middle Fork Stony Creek?
It is owned by the U.S. Forest Service.