316th over Rock Creek
GoodMitchell County, Iowa · 097171705 · Structure no. 000000000247611
- Built
- 1990
- 35 years old, rebuilt 1999
- Condition
- Good
- inspected January 2024
- Type
- Culvert
- Steel
- Length
- 20 ft
- 1 main span
- Daily traffic
- 59
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
316th over Rock Creek is a steel culvert carrying 316th over Rock Creek in Mitchell County, Iowa. It was built in 1990 and reconstructed in 1999, so it is 35 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 59 vehicles a day, projected to reach 59 by 2044. The structure is 20 ft (6.1 m) long. 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 316th over Rock Creek built?
It was built in 1990, making it 35 years old in 2025. It was reconstructed in 1999.
What condition is 316th over Rock Creek 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 January 2024.
How much traffic does 316th over Rock Creek carry?
About 59 vehicles per day (2022 count).
How long is 316th over Rock Creek?
The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).
Who owns 316th over Rock Creek?
It is owned by the County Highway Agency.