C66 310th ST over Little Sioux River
GoodPlymouth County, Iowa · 9043190110 · Structure no. 000000000270651
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 204 ft
- 1 main span
- Daily traffic
- 309
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
C66 310th ST over Little Sioux River is a prestressed concrete continuous stringer/multi-beam or girder carrying C66 310th ST over Little Sioux River in Plymouth County, Iowa. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 309 vehicles a day, roughly 8% of them trucks, projected to reach 309 by 2044. The structure is 204 ft (62.2 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
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 9 Excellent | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was C66 310th ST over Little Sioux River built?
It was built in 2018, making it 7 years old in 2025.
What condition is C66 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 August 2024.
How much traffic does C66 310th ST over Little Sioux River carry?
About 309 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is C66 310th ST over Little Sioux River?
The structure is 204 ft (62.2 m) long with a longest span of 73 ft (22.3 m) and a deck 33 ft wide.
Who owns C66 310th ST over Little Sioux River?
It is owned by the County Highway Agency.