FM over Little Sioux
PoorDickinson County, Iowa · 099372901 · Structure no. 000000000145180
- Built
- 1969
- 56 years old, rebuilt 2020
- Condition
- Poor
- inspected March 2024
- Type
- Slab
- Concrete Continuous
- Length
- 101 ft
- 3 main spans
- Daily traffic
- 319
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
FM over Little Sioux is a concrete continuous slab carrying FM over Little Sioux in Dickinson County, Iowa. It was built in 1969 and reconstructed in 2020, 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 319 vehicles a day, roughly 8% of them trucks, projected to reach 319 by 2044. The structure is 101 ft (30.8 m) long and 36 ft wide. 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 |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2020.
What condition is FM over Little Sioux 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 March 2024.
How much traffic does FM over Little Sioux carry?
About 319 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is FM over Little Sioux?
The structure is 101 ft (30.8 m) long with a longest span of 39 ft (11.9 m) and a deck 36 ft wide.
Who owns FM over Little Sioux?
It is owned by the County Highway Agency.