FM over Little Sioux River
FairWoodbury County, Iowa · 086430703 · Structure no. 000000000350405
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 282 ft
- 4 main spans
- Daily traffic
- 319
- 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 Woodbury County, Iowa. It was built in 1966, so it is 59 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 319 vehicles a day, roughly 23% of them trucks, projected to reach 319 by 2043. The structure is 282 ft (86 m) long and 30 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was FM over Little Sioux River built?
It was built in 1966, making it 59 years old in 2025.
What condition is FM over Little Sioux 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 June 2023.
How much traffic does FM over Little Sioux River carry?
About 319 vehicles per day (2022 count), of which roughly 23% are trucks.
How long is FM over Little Sioux River?
The structure is 282 ft (86 m) long with a longest span of 78 ft (23.8 m) and a deck 30 ft wide.
Who owns FM over Little Sioux River?
It is owned by the County Highway Agency.