US 52 over Mill Creek
GoodClayton County, Iowa · 0.5 Mi. S of S.R. C9Y · Structure no. 000000000020521
- Built
- 1974
- 51 years old
- Condition
- Good
- inspected January 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 39 ft
- 3 main spans
- Daily traffic
- 2,780
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US 52 over Mill Creek is a concrete continuous culvert carrying US 52 over Mill Creek in Clayton County, Iowa. It was built in 1974, so it is 51 years old, older 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 2,780 vehicles a day, roughly 14% of them trucks, projected to reach 2,780 by 2043. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 39.8 mi (64 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 US 52 over Mill Creek built?
It was built in 1974, making it 51 years old in 2025.
What condition is US 52 over Mill 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 2023.
How much traffic does US 52 over Mill Creek carry?
About 2,780 vehicles per day (2022 count), of which roughly 14% are trucks.
How long is US 52 over Mill Creek?
The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m).
Who owns US 52 over Mill Creek?
It is owned by the State Highway Agency.