FM over Little Rock River
PoorPosted for loadLyon County, Iowa · 098451404 · Structure no. 000000000228550
- Built
- 1955
- 70 years old, rebuilt 2007
- Condition
- Poor
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 200 ft
- 3 main spans
- Daily traffic
- 369
- 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 1955 and reconstructed in 2007, so it is 70 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. Its operating status is: posted for load restriction.
It carries about 369 vehicles a day, roughly 20% of them trucks, projected to reach 369 by 2044. The structure is 200 ft (61 m) long and 33 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| 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 Little Rock River built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 2007.
What condition is FM over Little Rock River 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 Little Rock River carry?
About 369 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is FM over Little Rock River?
The structure is 200 ft (61 m) long with a longest span of 78 ft (23.8 m) and a deck 33 ft wide.
Who owns FM over Little Rock River?
It is owned by the County Highway Agency.