310th ST over Little Sioux River
GoodClay County, Iowa · 097372802 · Structure no. 000000000117581
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected December 2022
- Type
- Slab
- Concrete Continuous
- Length
- 223 ft
- 5 main spans
- Daily traffic
- 81
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
310th ST over Little Sioux River is a concrete continuous slab carrying 310th ST over Little Sioux River in Clay County, Iowa. It was built in 1986, so it is 39 years old, younger than the Iowa average of 45.5 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 81 vehicles a day, projected to reach 81 by 2043. The structure is 223 ft (68 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 310th ST over Little Sioux River built?
It was built in 1986, making it 39 years old in 2025.
What condition is 310th ST over Little Sioux River in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2022.
How much traffic does 310th ST over Little Sioux River carry?
About 81 vehicles per day (2022 count).
How long is 310th ST over Little Sioux River?
The structure is 223 ft (68 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.
Who owns 310th ST over Little Sioux River?
It is owned by the County Highway Agency.