FM over Little Rock River
FairLyon County, Iowa · 099432001 · Structure no. 000000000229681
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 175 ft
- 3 main spans
- Daily traffic
- 190
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Little Rock River is a steel continuous stringer/multi-beam or girder carrying FM over Little Rock River in Lyon County, Iowa. It was built in 1973, so it is 52 years old, older 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 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 190 vehicles a day, roughly 12% of them trucks, projected to reach 190 by 2043. The structure is 175 ft (53.3 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 FM over Little Rock River built?
It was built in 1973, making it 52 years old in 2025.
What condition is FM over Little Rock 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 July 2023.
How much traffic does FM over Little Rock River carry?
About 190 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is FM over Little Rock River?
The structure is 175 ft (53.3 m) long with a longest span of 68 ft (20.7 m) and a deck 32 ft wide.
Who owns FM over Little Rock River?
It is owned by the County Highway Agency.