G61 310th ST over Three Mile Creek
GoodAdair County, Iowa · 074301901 · Structure no. 000000000054661
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected April 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 36 ft
- 3 main spans
- Daily traffic
- 379
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
G61 310th ST over Three Mile Creek is a concrete continuous culvert carrying G61 310th ST over Three Mile Creek in Adair County, Iowa. It was built in 2003, so it is 22 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 379 vehicles a day, roughly 20% of them trucks, projected to reach 379 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 16.8 mi (27 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was G61 310th ST over Three Mile Creek built?
It was built in 2003, making it 22 years old in 2025.
What condition is G61 310th ST over Three Mile 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 April 2024.
How much traffic does G61 310th ST over Three Mile Creek carry?
About 379 vehicles per day (2022 count), of which roughly 20% are trucks.
How long is G61 310th ST over Three Mile Creek?
The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m).
Who owns G61 310th ST over Three Mile Creek?
It is owned by the County Highway Agency.