FM over Overflow
PoorLyon County, Iowa · 098433402 · Structure no. 000000000228220
- Built
- 1968
- 57 years old
- Condition
- Poor
- inspected July 2024
- Type
- Slab
- Concrete Continuous
- Length
- 100 ft
- 3 main spans
- Daily traffic
- 199
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Overflow is a concrete continuous slab carrying FM over Overflow in Lyon County, Iowa. It was built in 1968, so it is 57 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 199 vehicles a day, projected to reach 199 by 2044. The structure is 100 ft (30.5 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 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 |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Overflow built?
It was built in 1968, making it 57 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 2024.
How much traffic does FM over Overflow carry?
About 199 vehicles per day (2022 count).
How long is FM over Overflow?
The structure is 100 ft (30.5 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.
Who owns FM over Overflow?
It is owned by the County Highway Agency.