FM over Little Sioux River
PoorPosted for loadMonona County, Iowa · 085441603 · Structure no. 000000000251400
- Built
- 1961
- 64 years old
- Condition
- Poor
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 252 ft
- 3 main spans
- Daily traffic
- 150
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Little Sioux River is a steel continuous stringer/multi-beam or girder carrying FM over Little Sioux River in Monona County, Iowa. It was built in 1961, so it is 64 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 150 vehicles a day, roughly 19% of them trucks, projected to reach 150 by 2043. The structure is 252 ft (76.8 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Sioux River built?
It was built in 1961, making it 64 years old in 2025.
What condition is FM over Little Sioux 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 May 2023.
How much traffic does FM over Little Sioux River carry?
About 150 vehicles per day (2022 count), of which roughly 19% are trucks.
How long is FM over Little Sioux River?
The structure is 252 ft (76.8 m) long with a longest span of 98 ft (29.9 m) and a deck 26 ft wide.
Who owns FM over Little Sioux River?
It is owned by the County Highway Agency.