State Route 1 over South Fork Eel River
FairMendocino County, California · 01-MEN-001-104.96 · Structure no. 10 0149
- Built
- 1944
- 81 years old
- Condition
- Fair
- inspected September 2023
- Type
- Truss - Thru
- Steel
- Length
- 358 ft
- 1 main span
- Daily traffic
- 700
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
State Route 1 over South Fork Eel River is a steel truss - thru carrying State Route 1 over South Fork Eel River in Mendocino County, California. It was built in 1944, so it is 81 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 5 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 700 vehicles a day, roughly 15% of them trucks, projected to reach 847 by 2043. The structure is 358 ft (109.1 m) long and 29 ft wide. If it were closed, the detour would be 39.8 mi (64 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 State Route 1 over South Fork Eel River built?
It was built in 1944, making it 81 years old in 2025.
What condition is State Route 1 over South Fork Eel River 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 September 2023.
How much traffic does State Route 1 over South Fork Eel River carry?
About 700 vehicles per day (2009 count), of which roughly 15% are trucks.
How long is State Route 1 over South Fork Eel River?
The structure is 358 ft (109.1 m) long with a longest span of 250 ft (76.2 m) and a deck 29 ft wide.
Who owns State Route 1 over South Fork Eel River?
It is owned by the State Highway Agency.