340th Avenue over Brophy Creek
GoodClinton County, Iowa · 081E53103 · Structure no. 000000000122721
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected June 2024
- Type
- Slab
- Concrete Continuous
- Length
- 161 ft
- 5 main spans
- Daily traffic
- 82
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
340th Avenue over Brophy Creek is a concrete continuous slab carrying 340th Avenue over Brophy Creek in Clinton County, Iowa. It was built in 1984, so it is 41 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 82 vehicles a day, projected to reach 82 by 2044. The structure is 161 ft (49.1 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 340th Avenue over Brophy Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is 340th Avenue over Brophy 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 June 2024.
How much traffic does 340th Avenue over Brophy Creek carry?
About 82 vehicles per day (2022 count).
How long is 340th Avenue over Brophy Creek?
The structure is 161 ft (49.1 m) long with a longest span of 34 ft (10.4 m) and a deck 33 ft wide.
Who owns 340th Avenue over Brophy Creek?
It is owned by the County Highway Agency.