FM over Overflow
PoorLyon County, Iowa · 098430501 · Structure no. 000000000227950
- Built
- 1969
- 56 years old
- Condition
- Poor
- inspected July 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 36 ft
- 3 main spans
- Daily traffic
- 718
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Overflow is a concrete continuous culvert carrying FM over Overflow in Lyon County, Iowa. It was built in 1969, so it is 56 years old, older than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 718 vehicles a day, roughly 12% of them trucks, projected to reach 718 by 2043. The structure is 36 ft (11 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Overflow built?
It was built in 1969, making it 56 years old in 2025.
What condition is FM over Overflow in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.
How much traffic does FM over Overflow carry?
About 718 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is FM over Overflow?
The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m).
Who owns FM over Overflow?
It is owned by the County Highway Agency.