FM over Argo Slough
FairLyon County, Iowa · 099431002 · Structure no. 000000000229581
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected July 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 52 ft
- 4 main spans
- Daily traffic
- 45
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Argo Slough is a concrete continuous culvert carrying FM over Argo Slough in Lyon County, Iowa. It was built in 1980, so it is 45 years old, younger than the Iowa average of 45.5 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 45 vehicles a day, projected to reach 45 by 2043. The structure is 52 ft (15.9 m) long. If it were closed, the detour would be 3.7 mi (6 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Argo Slough built?
It was built in 1980, making it 45 years old in 2025.
What condition is FM over Argo Slough 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 July 2023.
How much traffic does FM over Argo Slough carry?
About 45 vehicles per day (2022 count).
How long is FM over Argo Slough?
The structure is 52 ft (15.9 m) long with a longest span of 12 ft (3.7 m).
Who owns FM over Argo Slough?
It is owned by the County Highway Agency.